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ClosedFind a Tender · UK4

Digester Inspection and Refurbishment Works

Buyer: THAMES WATER UTILITIES LIMITED →

View official notice ↗Official source

BuyerTHAMES WATER UTILITIES LIMITED
StatusClosed
Deadline16 Jul 2026
Value£70,000,000
Published30 Jun 2026

What is being bought

Thames Water Utilities Limited intends to establish a single-lot, multi-supplier framework agreement to deliver inspection, repair, refurbishment and upgrade works to anaerobic digester assets and associated infrastructure across its operational estate. Thames Water Utilities Limited intends to establish a single-lot, multi-supplier framework agreement to deliver inspection, repair, refurbishment and upgrade works to anaerobic digester assets and associated infrastructure across its operational estate. The framework will support the ongoing maintenance, regulatory compliance and enhancement of Thames Water's digester portfolio, which forms a critical part of sludge treatment operations. Works will be required across multiple sites and will be delivered as discrete packages or programmes of work called off over the duration of the framework. The scope of services to be delivered under the framework includes, but is not limited to: • Decommissioning, isolation and preparation of digesters for inspection and refurbishment • Removal, treatment and disposal of sludge, grit and associated waste materials in accordance with all applicable regulations • Internal and external inspection of digester structures and associated assets, including provision of inspection reports, defect identification and recommended remedial actions • Cleaning and enabling works required to facilitate inspection and subsequent refurbishment activities • Structural repair and refurbishment of digester assets, including roofs, walls, bases and associated civil infrastructure • Repair, replacement and upgrade of mechanical, electrical, control and instrumentation (MECI/MEICA) systems, including mixing equipment, pipework, valves, heating systems, and control/automation systems • Upgrade works to meet current regulatory, environmental and operational standards, including those relating to emissions control, gas management and asset performance • Temporary works, access solutions, cranage, site establishment and all associated enabling activities required to safely deliver the works • Testing, commissioning, performance validation and handover of refurbished assets • Provision of as-built documentation, asset data, operation and maintenance manuals, and training for operational personnel The nature, scope and value of individual call-off contracts will vary. In many cases, the full extent of refurbishment and upgrade works will only be confirmed following completion of initial decommissioning, cleaning, and detailed inspection activities. As such, works packages may comprise a combination of defined and developing scopes, with suppliers required to work collaboratively with Thames Water to refine and deliver solutions based on inspection findings. The framework is expected to operate across multiple sites within the Thames Water region. Works will need to be carefully planned and executed to ensure continued operational performance of the wider network, including constraints on the number of digesters that can be taken offline at any one time. The estimated aggregate value of contracts awarded under the framework is £70,000,000. This value is indicative only and does not constitute any guarantee of the volume, value, timing or distribution of work. No minimum workload or exclusivity is guaranteed to any supplier. Suppliers appointed to the framework will be expected to demonstrate capability in delivering complex, safety-critical works within live operational environments, and to work collaboratively with Thames Water to achieve programme objectives, regulatory compliance and value for money. Further detail regarding the scope, technical requirements and contractual arrangements will be set out in the procurement documentation issued at the Invitation to Negotiate (ITN) stage.

Delivery location

UKI, GB · UKJ, GB

Categories

Construction works for plants, mining and manufacturing and for buildings relating to the oil and gas industry 45250000

Lot details

Lot 1

No lot description published.

Statusactive
Value£70,000,000
Contract periodFrom 1 Feb 2027 to 1 Feb 2031

Award criteria
Technical (75%)
Commercial (25%)

What is included

ItemCategoryQuantity
1Construction works for plants, mining and manufacturing and for buildings relating to the oil and gas industryNot published

Comparable-procurement analytics

Benchmarked against retained Find a Tender procedures with CPV division 45. The category anchor is Construction works for plants, mining and manufacturing and for buildings relating to the oil and gas industry (45250000); this is a deliberately broad market comparator. The comparison is shown at several levels rather than pretending one company or region is always the best benchmark.

Comparison setProceduresReported bids per procedureNamed award suppliersPrice evidence
Market: CPV division 4517,1274 median · 30.2 average (5,652 of 17,127 with a bid count)3.8 average (6,245 of 17,127 with named award suppliers)Not published
Same buyer359 median · 11.7 average (3 of 35 with a bid count)6.6 average (7 of 35 with named award suppliers)Not published
Delivery region: UKI1,8844 median · 30.3 average (770 of 1,884 with a bid count)3.6 average (808 of 1,884 with named award suppliers)Not published
Similar published value (0.5×–2×)6413.5 median · 76.4 average (8 of 641 with a bid count)7.6 average (8 of 641 with named award suppliers)Not published

“Reported bids” is an official aggregate, sometimes reported per lot; it is the closest available competition measure. “Named award suppliers” are winners, not all applicants.

Price-outcome signal

Not enough comparable procedures currently publish both a GBP tender value and a usable lowest-valid-bid value to calculate a responsible price-reduction benchmark. Tenderline deliberately does not infer a saving from named award suppliers or from missing award values.

Procurement strategy & market signals

Framework agreementYes
Dynamic purchasing systemNot published
Competitive procurementNot published
Recurring requirementNot published
Procurement method rationaleNot published
Rationale classificationsNot published
Special regimeutilities
Covered byNot published
Submission policyallowed
Selection criteriaNot published
Risk detailsNot published

Planning & early market engagement

BudgetNot published
No-engagement rationaleNot published
Planning documents0
Planning milestones0

No planning milestones published.

Related procurements

No linked framework, prior procurement or reprocurement published.

Documents & submission route

Source data inventory

Diagnostic view. “Not published” means this current release does not provide a value.

OCIDocds-h6vhtk-06b25c
Latest release ID061143-2026
Latest release timestampTue Jun 30 2026 10:39:58 GMT+0000 (Coordinated Universal Time)
Sourcefind-a-tender
Official notice URLhttps://www.find-tender.service.gov.uk/Notice/061143-2026
Tender statusactive
Procurement methodselective
Procurement method detailsCompetitive flexible procedure
Main procurement categoryworks
Above thresholdYes
Legal basis2023/54
Tender period: startNot published
Tender period: endNot published
Expression of interest deadline2026-07-16T12:00:00+01:00
Enquiry deadline2026-06-25T17:00:00+01:00
Award period: startNot published
Award period: end2026-08-03T23:59:59+01:00
Submission method detailsIf you are interested in participating, please complete this form: https://forms.cloud.microsoft/e/2007vhj6is
Submission languagesen
Electronic catalogue policyNot published
Total tender value£70,000,000
Tender lots in source1
Tender items in source1
Tender documents in source2
Awards in latest release0
Contracts in latest release0
Parties in latest release1

Notice history

DateEventReference
30 Jun 2026tenderUpdate061143-2026
11 Jun 2026tender054972-2026

All source data

Unmodified official OCDS data retained by Tenderline for this procurement process.

Complete current OCDS release JSON
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  "date": "2026-06-30T11:39:58+01:00",
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  },
  "tender": {
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        },
        "hasRenewal": true,
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              "numbers": [
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            },
            {
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              "type": "price",
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        },
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      }
    ],
    "title": "Digester Inspection and Refurbishment Works",
    "value": {
      "currency": "GBP",
      "amountGross": 70000000
    },
    "status": "active",
    "documents": [
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        "description": "Not published",
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      {
        "id": "061143-2026",
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        "documentType": "tenderNotice",
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      }
    ],
    "procedure": {
      "features": "This Tender Notice invites a request to participate from Applicants. Having reviewed the Tender Notice, all Applicants wishing to participate in the Digester Works Framework competition will need to demonstrate in their submissions that they meet the Conditions of Participation set out in the Procurement Specific Questionnaire Pack (PSQ Pack) and complete a Non-Disclosure/Confidentiality Agreement.\nApplications will be submitted via the contracting authority's portal as described in the PSQ Pack - Part 1 Instructions to Applicants.\nThe contracting authority will assess the Applicant's submissions and be shortlisted based on several pass/fail questions on corporate assurance along with 3 scored questions. The weighting of the scored questions is listed below.\n•\tHealth & Safety 15%\n•\tCapability & Relevant Experience 25%\n•\tCapability (asset integration) 10%\n•\tSupply Chain Management 15%\n•\tCollaboration 20%\n•\tInnovation 15%\nScored submissions will be ranked from highest to lowest and the contracting authority intends to invite the top twelve to twenty highest ranked compliant bidders to tender for the Digester Works Framework AMP8/9.\nInvitation to Negotiate (ITN) Stage\nThe contracting authority will share with the shortlisted Applicants an Invitation to Negotiate (ITN) against which such Applicants will be invited to submit a tender. Tender submissions will be evaluated in accordance with the objective criteria set out in the ITN.\nTechnical Questions will be made available at ITN Stage and will follow the question themes and below with the remaining 25% attributed to the commercial score of the bidder.\n•\tSafety\n•\tProgramme - Sequencing & Outage Plan Development\n•\tDelivery & Technical\nNegotiation Stage\nThe contracting authority may engage in negotiations with tenderers as set out further in the ITN.\nFor the avoidance of doubt, the contracting authority reserves the right to award the framework without any negotiation, on the basis of the most advantageous tenders submitted at the ITN Stage.\nFollowing any negotiation stage, the contracting authority also reserves the right to invite tenderers to submit an updated tender, as explained further in the ITN.\nFollowing the submission of any updated tenders, the contracting authority will complete the tender evaluation process and award places on the Digester Works Framework Agreement to up to ten most advantageous tenders in accordance with the objective criteria set out in the ITN.\nThames Water reserves the right to refine the award criteria. Please note that that deadline for asking for access to the PSQ & submitting of the PSQ is 9 July 2026, at 12:00 noon."
    },
    "amendments": [
      {
        "id": "061143-2026",
        "description": "Please note the deadline for asking for access and submitting the PSQ data requested is now 16th July at 12 noon GMT."
      }
    ],
    "legalBasis": {
      "id": "2023/54",
      "uri": "https://www.legislation.gov.uk/ukpga/2023/54/contents",
      "scheme": "UKPGA"
    },
    "techniques": {
      "frameworkAgreement": {
        "type": "closed",
        "method": "withAndWithoutReopeningCompetition",
        "description": "Thames Water Utilities Limited is establishing this Framework as a single-lot, multi-supplier framework agreement for the delivery of digester inspection, repair, refurbishment and upgrade works. The Framework will be procured using a competitive flexible procedure.\nGeneral operation of the Framework\nNo supplier is guaranteed any minimum volume or value of work under the Framework.\nCall-off contracts will be awarded either:\n•\tthrough further competition between all appointed Framework suppliers; or\n•\tvia award directly to a supplier on an objective basis\nFor each call-off, Thames Water Utilities Limited will issue a call-off tender pack setting out:\n•\tthe initial scope of works,\n•\tproject-specific requirements and constraints,\n•\tpricing approach and assumptions, and\n•\tevaluation criteria.\nTenderers will be required to submit both a technical and commercial proposal. Contracts will be awarded to the tenderer submitting the most advantageous tender in accordance with the criteria set out in the call-off documentation.\nCall-off contracts will be let using the NEC4 Engineering and Construction Contract (ECC) Option A (priced contract with activity schedule).\nPricing mechanism\nAt the framework award stage (ITN), tenderers will be required to submit a Framework Schedule of Rates, setting out their proposed:\n•\tlabour rates,\n•\tplant and equipment rates,\n•\tdaywork rates, and\n•\trates for defined inspection, repair and refurbishment activities.\nThese rates will form the baseline pricing structure for all future call-off contracts under the Framework.\nAt call-off stage, for each further competition:\n•\tThames Water will issue a call-off scope and associated pricing template\n•\tTenderers will be required to propose quantities for each activity based on their methodology, inspection assumptions, and understanding of the scope\n•\tThe total tendered price will be calculated by applying the tenderer's framework rates to their proposed quantities\n•\tTenderers may, where they identify efficiencies specific to the call-off project, offer reduced rates compared to their submitted Framework Schedule of Rates, provided these are clearly identified and applied consistently within their pricing submission\nThis approach will result in a priced Activity Schedule, consistent with NEC4 ECC Option A, which will form the basis of contract award.\nSubmitted quantities and any proposed rate adjustments will be evaluated against clear criteria."
      },
      "hasFrameworkAgreement": true
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    "awardPeriod": {
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    },
    "description": "Thames Water Utilities Limited intends to establish a single-lot, multi-supplier framework agreement to deliver inspection, repair, refurbishment and upgrade works to anaerobic digester assets and associated infrastructure across its operational estate.\nThames Water Utilities Limited intends to establish a single-lot, multi-supplier framework agreement to deliver inspection, repair, refurbishment and upgrade works to anaerobic digester assets and associated infrastructure across its operational estate.\nThe framework will support the ongoing maintenance, regulatory compliance and enhancement of Thames Water's digester portfolio, which forms a critical part of sludge treatment operations. Works will be required across multiple sites and will be delivered as discrete packages or programmes of work called off over the duration of the framework.\nThe scope of services to be delivered under the framework includes, but is not limited to:\n•\tDecommissioning, isolation and preparation of digesters for inspection and refurbishment\n•\tRemoval, treatment and disposal of sludge, grit and associated waste materials in accordance with all applicable regulations\n•\tInternal and external inspection of digester structures and associated assets, including provision of inspection reports, defect identification and recommended remedial actions\n•\tCleaning and enabling works required to facilitate inspection and subsequent refurbishment activities\n•\tStructural repair and refurbishment of digester assets, including roofs, walls, bases and associated civil infrastructure\n•\tRepair, replacement and upgrade of mechanical, electrical, control and instrumentation (MECI/MEICA) systems, including mixing equipment, pipework, valves, heating systems, and control/automation systems\n•\tUpgrade works to meet current regulatory, environmental and operational standards, including those relating to emissions control, gas management and asset performance\n•\tTemporary works, access solutions, cranage, site establishment and all associated enabling activities required to safely deliver the works\n•\tTesting, commissioning, performance validation and handover of refurbished assets\n•\tProvision of as-built documentation, asset data, operation and maintenance manuals, and training for operational personnel\nThe nature, scope and value of individual call-off contracts will vary. In many cases, the full extent of refurbishment and upgrade works will only be confirmed following completion of initial decommissioning, cleaning, and detailed inspection activities. As such, works packages may comprise a combination of defined and developing scopes, with suppliers required to work collaboratively with Thames Water to refine and deliver solutions based on inspection findings.\nThe framework is expected to operate across multiple sites within the Thames Water region. Works will need to be carefully planned and executed to ensure continued operational performance of the wider network, including constraints on the number of digesters that can be taken offline at any one time.\nThe estimated aggregate value of contracts awarded under the framework is £70,000,000. This value is indicative only and does not constitute any guarantee of the volume, value, timing or distribution of work. No minimum workload or exclusivity is guaranteed to any supplier.\nSuppliers appointed to the framework will be expected to demonstrate capability in delivering complex, safety-critical works within live operational environments, and to work collaboratively with Thames Water to achieve programme objectives, regulatory compliance and value for money.\nFurther detail regarding the scope, technical requirements and contractual arrangements will be set out in the procurement documentation issued at the Invitation to Negotiate (ITN) stage.",
    "enquiryPeriod": {
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    },
    "specialRegime": [
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    "aboveThreshold": true,
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    "procurementMethod": "selective",
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    "submissionMethodDetails": "If you are interested in participating, please complete this form:\nhttps://forms.cloud.microsoft/e/2007vhj6is",
    "procurementMethodDetails": "Competitive flexible procedure",
    "expressionOfInterestDeadline": "2026-07-16T12:00:00+01:00"
  },
  "parties": [
    {
      "id": "GB-COH-02366661",
      "name": "THAMES WATER UTILITIES LIMITED",
      "roles": [
        "buyer"
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      "address": {
        "region": "UKJ11",
        "country": "GB",
        "locality": "Reading",
        "postalCode": "RG1 8DB",
        "countryName": "United Kingdom",
        "streetAddress": "Clearwater Court"
      },
      "details": {
        "classifications": [
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            "description": "Private utility"
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      "identifier": {
        "id": "02366661",
        "scheme": "GB-COH"
      },
      "contactPoint": {
        "email": "procurement.support.centre@thameswater.co.uk"
      },
      "additionalIdentifiers": [
        {
          "id": "PNQQ-4647-DTCV",
          "scheme": "GB-PPON"
        }
      ]
    }
  ],
  "language": "en",
  "initiationType": "tender"
}
Complete JSON history (2 releases)
30 Jun 2026 · 061143-2026 · tenderUpdate
{
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        "method": "withAndWithoutReopeningCompetition",
        "description": "Thames Water Utilities Limited is establishing this Framework as a single-lot, multi-supplier framework agreement for the delivery of digester inspection, repair, refurbishment and upgrade works. The Framework will be procured using a competitive flexible procedure.\nGeneral operation of the Framework\nNo supplier is guaranteed any minimum volume or value of work under the Framework.\nCall-off contracts will be awarded either:\n•\tthrough further competition between all appointed Framework suppliers; or\n•\tvia award directly to a supplier on an objective basis\nFor each call-off, Thames Water Utilities Limited will issue a call-off tender pack setting out:\n•\tthe initial scope of works,\n•\tproject-specific requirements and constraints,\n•\tpricing approach and assumptions, and\n•\tevaluation criteria.\nTenderers will be required to submit both a technical and commercial proposal. Contracts will be awarded to the tenderer submitting the most advantageous tender in accordance with the criteria set out in the call-off documentation.\nCall-off contracts will be let using the NEC4 Engineering and Construction Contract (ECC) Option A (priced contract with activity schedule).\nPricing mechanism\nAt the framework award stage (ITN), tenderers will be required to submit a Framework Schedule of Rates, setting out their proposed:\n•\tlabour rates,\n•\tplant and equipment rates,\n•\tdaywork rates, and\n•\trates for defined inspection, repair and refurbishment activities.\nThese rates will form the baseline pricing structure for all future call-off contracts under the Framework.\nAt call-off stage, for each further competition:\n•\tThames Water will issue a call-off scope and associated pricing template\n•\tTenderers will be required to propose quantities for each activity based on their methodology, inspection assumptions, and understanding of the scope\n•\tThe total tendered price will be calculated by applying the tenderer's framework rates to their proposed quantities\n•\tTenderers may, where they identify efficiencies specific to the call-off project, offer reduced rates compared to their submitted Framework Schedule of Rates, provided these are clearly identified and applied consistently within their pricing submission\nThis approach will result in a priced Activity Schedule, consistent with NEC4 ECC Option A, which will form the basis of contract award.\nSubmitted quantities and any proposed rate adjustments will be evaluated against clear criteria."
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      "endDate": "2026-08-03T23:59:59+01:00"
    },
    "description": "Thames Water Utilities Limited intends to establish a single-lot, multi-supplier framework agreement to deliver inspection, repair, refurbishment and upgrade works to anaerobic digester assets and associated infrastructure across its operational estate.\nThames Water Utilities Limited intends to establish a single-lot, multi-supplier framework agreement to deliver inspection, repair, refurbishment and upgrade works to anaerobic digester assets and associated infrastructure across its operational estate.\nThe framework will support the ongoing maintenance, regulatory compliance and enhancement of Thames Water's digester portfolio, which forms a critical part of sludge treatment operations. Works will be required across multiple sites and will be delivered as discrete packages or programmes of work called off over the duration of the framework.\nThe scope of services to be delivered under the framework includes, but is not limited to:\n•\tDecommissioning, isolation and preparation of digesters for inspection and refurbishment\n•\tRemoval, treatment and disposal of sludge, grit and associated waste materials in accordance with all applicable regulations\n•\tInternal and external inspection of digester structures and associated assets, including provision of inspection reports, defect identification and recommended remedial actions\n•\tCleaning and enabling works required to facilitate inspection and subsequent refurbishment activities\n•\tStructural repair and refurbishment of digester assets, including roofs, walls, bases and associated civil infrastructure\n•\tRepair, replacement and upgrade of mechanical, electrical, control and instrumentation (MECI/MEICA) systems, including mixing equipment, pipework, valves, heating systems, and control/automation systems\n•\tUpgrade works to meet current regulatory, environmental and operational standards, including those relating to emissions control, gas management and asset performance\n•\tTemporary works, access solutions, cranage, site establishment and all associated enabling activities required to safely deliver the works\n•\tTesting, commissioning, performance validation and handover of refurbished assets\n•\tProvision of as-built documentation, asset data, operation and maintenance manuals, and training for operational personnel\nThe nature, scope and value of individual call-off contracts will vary. In many cases, the full extent of refurbishment and upgrade works will only be confirmed following completion of initial decommissioning, cleaning, and detailed inspection activities. As such, works packages may comprise a combination of defined and developing scopes, with suppliers required to work collaboratively with Thames Water to refine and deliver solutions based on inspection findings.\nThe framework is expected to operate across multiple sites within the Thames Water region. Works will need to be carefully planned and executed to ensure continued operational performance of the wider network, including constraints on the number of digesters that can be taken offline at any one time.\nThe estimated aggregate value of contracts awarded under the framework is £70,000,000. This value is indicative only and does not constitute any guarantee of the volume, value, timing or distribution of work. No minimum workload or exclusivity is guaranteed to any supplier.\nSuppliers appointed to the framework will be expected to demonstrate capability in delivering complex, safety-critical works within live operational environments, and to work collaboratively with Thames Water to achieve programme objectives, regulatory compliance and value for money.\nFurther detail regarding the scope, technical requirements and contractual arrangements will be set out in the procurement documentation issued at the Invitation to Negotiate (ITN) stage.",
    "enquiryPeriod": {
      "endDate": "2026-06-25T17:00:00+01:00"
    },
    "specialRegime": [
      "utilities"
    ],
    "aboveThreshold": true,
    "submissionTerms": {
      "languages": [
        "en"
      ],
      "electronicSubmissionPolicy": "allowed"
    },
    "procurementMethod": "selective",
    "mainProcurementCategory": "works",
    "submissionMethodDetails": "If you are interested in participating, please complete this form:\nhttps://forms.cloud.microsoft/e/2007vhj6is",
    "procurementMethodDetails": "Competitive flexible procedure",
    "expressionOfInterestDeadline": "2026-07-16T12:00:00+01:00"
  },
  "parties": [
    {
      "id": "GB-COH-02366661",
      "name": "THAMES WATER UTILITIES LIMITED",
      "roles": [
        "buyer"
      ],
      "address": {
        "region": "UKJ11",
        "country": "GB",
        "locality": "Reading",
        "postalCode": "RG1 8DB",
        "countryName": "United Kingdom",
        "streetAddress": "Clearwater Court"
      },
      "details": {
        "classifications": [
          {
            "id": "privateUtility",
            "scheme": "UK_CA_TYPE",
            "description": "Private utility"
          }
        ]
      },
      "identifier": {
        "id": "02366661",
        "scheme": "GB-COH"
      },
      "contactPoint": {
        "email": "procurement.support.centre@thameswater.co.uk"
      },
      "additionalIdentifiers": [
        {
          "id": "PNQQ-4647-DTCV",
          "scheme": "GB-PPON"
        }
      ]
    }
  ],
  "language": "en",
  "initiationType": "tender"
}
11 Jun 2026 · 054972-2026 · tender
{
  "id": "054972-2026",
  "tag": [
    "tender"
  ],
  "date": "2026-06-11T07:44:48+01:00",
  "ocid": "ocds-h6vhtk-06b25c",
  "buyer": {
    "id": "GB-COH-02366661",
    "name": "THAMES WATER UTILITIES LIMITED"
  },
  "tender": {
    "id": "FA2309",
    "lots": [
      {
        "id": "1",
        "value": {
          "currency": "GBP",
          "amountGross": 70000000
        },
        "status": "active",
        "renewal": {
          "description": "The Framework Agreement will be awarded for an initial term of four (4) years. Thames Water Utilities Limited reserves the right, at its sole discretion, to extend the duration of the Framework Agreement by additional periods of time, subject to a maximum total term of eight (8) years.\nThe exercise of any extension will be at Thames Water Utilities Limited's discretion and will be based on a range of considerations, including:\n•\tthe satisfactory performance of Framework suppliers against contractual requirements, including delivery, quality, health and safety, and commercial performance;[AL5.1]\n•\tthe continued suitability of the Framework to meet Thames Water Utilities Limited's operational and strategic requirements; and\n•\tvalue for money and ongoing competitiveness of the Framework arrangements.\nThere is no obligation on Thames Water Utilities Limited to exercise any or all of the extension options"
        },
        "hasRenewal": true,
        "awardCriteria": {
          "criteria": [
            {
              "name": "Technical",
              "type": "quality",
              "numbers": [
                {
                  "number": 75,
                  "weight": "percentageExact"
                }
              ]
            },
            {
              "name": "Commercial",
              "type": "price",
              "numbers": [
                {
                  "number": 25,
                  "weight": "percentageExact"
                }
              ]
            }
          ]
        },
        "contractPeriod": {
          "endDate": "2031-02-01T23:59:59Z",
          "startDate": "2027-02-01T00:00:00Z",
          "maxExtentDate": "2035-02-01T23:59:59Z"
        }
      }
    ],
    "items": [
      {
        "id": "1",
        "relatedLot": "1",
        "deliveryAddresses": [
          {
            "region": "UKI",
            "country": "GB",
            "countryName": "United Kingdom"
          },
          {
            "region": "UKJ",
            "country": "GB",
            "countryName": "United Kingdom"
          }
        ],
        "additionalClassifications": [
          {
            "id": "45250000",
            "scheme": "CPV",
            "description": "Construction works for plants, mining and manufacturing and for buildings relating to the oil and gas industry"
          }
        ]
      }
    ],
    "title": "Digester Inspection and Refurbishment Works",
    "value": {
      "currency": "GBP",
      "amountGross": 70000000
    },
    "status": "active",
    "documents": [
      {
        "id": "conflictOfInterest",
        "description": "Not published",
        "documentType": "conflictOfInterest"
      },
      {
        "id": "054972-2026",
        "url": "https://www.find-tender.service.gov.uk/Notice/054972-2026",
        "format": "text/html",
        "noticeType": "UK4",
        "description": "Tender notice on Find a Tender",
        "documentType": "tenderNotice",
        "datePublished": "2026-06-11T07:44:48+01:00"
      }
    ],
    "procedure": {
      "features": "This Tender Notice invites a request to participate from Applicants. Having reviewed the Tender Notice, all Applicants wishing to participate in the Digester Works Framework competition will need to demonstrate in their submissions that they meet the Conditions of Participation set out in the Procurement Specific Questionnaire Pack (PSQ Pack) and complete a Non-Disclosure/Confidentiality Agreement.\nApplications will be submitted via the contracting authority's portal as described in the PSQ Pack - Part 1 Instructions to Applicants.\nThe contracting authority will assess the Applicant's submissions and be shortlisted based on several pass/fail questions on corporate assurance along with 3 scored questions. The weighting of the scored questions is listed below.\n•\tHealth & Safety 15%\n•\tCapability & Relevant Experience 25%\n•\tCapability (asset integration) 10%\n•\tSupply Chain Management 15%\n•\tCollaboration 20%\n•\tInnovation 15%\nScored submissions will be ranked from highest to lowest and the contracting authority intends to invite the top twelve to twenty highest ranked compliant bidders to tender for the Digester Works Framework AMP8/9.\nInvitation to Negotiate (ITN) Stage\nThe contracting authority will share with the shortlisted Applicants an Invitation to Negotiate (ITN) against which such Applicants will be invited to submit a tender. Tender submissions will be evaluated in accordance with the objective criteria set out in the ITN.\nTechnical Questions will be made available at ITN Stage and will follow the question themes and below with the remaining 25% attributed to the commercial score of the bidder.\n•\tSafety \n•\tProgramme - Sequencing & Outage Plan Development\n•\tDelivery & Technical \nNegotiation Stage\nThe contracting authority may engage in negotiations with tenderers as set out further in the ITN. \nFor the avoidance of doubt, the contracting authority reserves the right to award the framework without any negotiation, on the basis of the most advantageous tenders submitted at the ITN Stage.\nFollowing any negotiation stage, the contracting authority also reserves the right to invite tenderers to submit an updated tender, as explained further in the ITN.\nFollowing the submission of any updated tenders, the contracting authority will complete the tender evaluation process and award places on the Digester Works Framework Agreement to up to ten most advantageous tenders in accordance with the objective criteria set out in the ITN.\nThames Water reserves the right to refine the award criteria. Please note that that deadline for asking for access to the PSQ & submitting of the PSQ is 9 July 2026, at 12:00 noon."
    },
    "legalBasis": {
      "id": "2023/54",
      "uri": "https://www.legislation.gov.uk/ukpga/2023/54/contents",
      "scheme": "UKPGA"
    },
    "techniques": {
      "frameworkAgreement": {
        "type": "closed",
        "method": "withAndWithoutReopeningCompetition",
        "description": "Thames Water Utilities Limited is establishing this Framework as a single-lot, multi-supplier framework agreement for the delivery of digester inspection, repair, refurbishment and upgrade works. The Framework will be procured using a competitive flexible procedure.\nGeneral operation of the Framework\nNo supplier is guaranteed any minimum volume or value of work under the Framework.\nCall-off contracts will be awarded either:\n•\tthrough further competition between all appointed Framework suppliers; or\n•\tvia award directly to a supplier on an objective basis\nFor each call-off, Thames Water Utilities Limited will issue a call-off tender pack setting out:\n•\tthe initial scope of works,\n•\tproject-specific requirements and constraints,\n•\tpricing approach and assumptions, and\n•\tevaluation criteria.\nTenderers will be required to submit both a technical and commercial proposal. Contracts will be awarded to the tenderer submitting the most advantageous tender in accordance with the criteria set out in the call-off documentation.\nCall-off contracts will be let using the NEC4 Engineering and Construction Contract (ECC) Option A (priced contract with activity schedule).\nPricing mechanism\nAt the framework award stage (ITN), tenderers will be required to submit a Framework Schedule of Rates, setting out their proposed:\n•\tlabour rates,\n•\tplant and equipment rates,\n•\tdaywork rates, and\n•\trates for defined inspection, repair and refurbishment activities.\nThese rates will form the baseline pricing structure for all future call-off contracts under the Framework.\nAt call-off stage, for each further competition:\n•\tThames Water will issue a call-off scope and associated pricing template\n•\tTenderers will be required to propose quantities for each activity based on their methodology, inspection assumptions, and understanding of the scope\n•\tThe total tendered price will be calculated by applying the tenderer's framework rates to their proposed quantities\n•\tTenderers may, where they identify efficiencies specific to the call-off project, offer reduced rates compared to their submitted Framework Schedule of Rates, provided these are clearly identified and applied consistently within their pricing submission\nThis approach will result in a priced Activity Schedule, consistent with NEC4 ECC Option A, which will form the basis of contract award.\nSubmitted quantities and any proposed rate adjustments will be evaluated against clear criteria."
      },
      "hasFrameworkAgreement": true
    },
    "awardPeriod": {
      "endDate": "2026-08-03T23:59:59+01:00"
    },
    "description": "Thames Water Utilities Limited intends to establish a single-lot, multi-supplier framework agreement to deliver inspection, repair, refurbishment and upgrade works to anaerobic digester assets and associated infrastructure across its operational estate.\nThames Water Utilities Limited intends to establish a single-lot, multi-supplier framework agreement to deliver inspection, repair, refurbishment and upgrade works to anaerobic digester assets and associated infrastructure across its operational estate.\nThe framework will support the ongoing maintenance, regulatory compliance and enhancement of Thames Water's digester portfolio, which forms a critical part of sludge treatment operations. Works will be required across multiple sites and will be delivered as discrete packages or programmes of work called off over the duration of the framework.\nThe scope of services to be delivered under the framework includes, but is not limited to:\n•\tDecommissioning, isolation and preparation of digesters for inspection and refurbishment\n•\tRemoval, treatment and disposal of sludge, grit and associated waste materials in accordance with all applicable regulations\n•\tInternal and external inspection of digester structures and associated assets, including provision of inspection reports, defect identification and recommended remedial actions\n•\tCleaning and enabling works required to facilitate inspection and subsequent refurbishment activities\n•\tStructural repair and refurbishment of digester assets, including roofs, walls, bases and associated civil infrastructure\n•\tRepair, replacement and upgrade of mechanical, electrical, control and instrumentation (MECI/MEICA) systems, including mixing equipment, pipework, valves, heating systems, and control/automation systems\n•\tUpgrade works to meet current regulatory, environmental and operational standards, including those relating to emissions control, gas management and asset performance\n•\tTemporary works, access solutions, cranage, site establishment and all associated enabling activities required to safely deliver the works\n•\tTesting, commissioning, performance validation and handover of refurbished assets\n•\tProvision of as-built documentation, asset data, operation and maintenance manuals, and training for operational personnel\nThe nature, scope and value of individual call-off contracts will vary. In many cases, the full extent of refurbishment and upgrade works will only be confirmed following completion of initial decommissioning, cleaning, and detailed inspection activities. As such, works packages may comprise a combination of defined and developing scopes, with suppliers required to work collaboratively with Thames Water to refine and deliver solutions based on inspection findings.\nThe framework is expected to operate across multiple sites within the Thames Water region. Works will need to be carefully planned and executed to ensure continued operational performance of the wider network, including constraints on the number of digesters that can be taken offline at any one time.\nThe estimated aggregate value of contracts awarded under the framework is £70,000,000. This value is indicative only and does not constitute any guarantee of the volume, value, timing or distribution of work. No minimum workload or exclusivity is guaranteed to any supplier.\nSuppliers appointed to the framework will be expected to demonstrate capability in delivering complex, safety-critical works within live operational environments, and to work collaboratively with Thames Water to achieve programme objectives, regulatory compliance and value for money.\nFurther detail regarding the scope, technical requirements and contractual arrangements will be set out in the procurement documentation issued at the Invitation to Negotiate (ITN) stage.",
    "enquiryPeriod": {
      "endDate": "2026-06-25T17:00:00+01:00"
    },
    "specialRegime": [
      "utilities"
    ],
    "aboveThreshold": true,
    "submissionTerms": {
      "languages": [
        "en"
      ],
      "electronicSubmissionPolicy": "allowed"
    },
    "procurementMethod": "selective",
    "mainProcurementCategory": "works",
    "submissionMethodDetails": "If you are interested in participating, please complete this form: \nhttps://forms.cloud.microsoft/e/2007vhj6is",
    "procurementMethodDetails": "Competitive flexible procedure",
    "expressionOfInterestDeadline": "2026-07-09T12:00:00+01:00"
  },
  "parties": [
    {
      "id": "GB-COH-02366661",
      "name": "THAMES WATER UTILITIES LIMITED",
      "roles": [
        "buyer"
      ],
      "address": {
        "region": "UKJ11",
        "country": "GB",
        "locality": "Reading",
        "postalCode": "RG1 8DB",
        "countryName": "United Kingdom",
        "streetAddress": "Clearwater Court"
      },
      "details": {
        "classifications": [
          {
            "id": "privateUtility",
            "scheme": "UK_CA_TYPE",
            "description": "Private utility"
          }
        ]
      },
      "identifier": {
        "id": "02366661",
        "scheme": "GB-COH"
      },
      "contactPoint": {
        "email": "procurement.support.centre@thameswater.co.uk"
      },
      "additionalIdentifiers": [
        {
          "id": "PNQQ-4647-DTCV",
          "scheme": "GB-PPON"
        }
      ]
    }
  ],
  "language": "en",
  "initiationType": "tender"
}