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Published 12 Nov 2026, 13:40 GMT

Official UK procurement notice

Prototype Fast Reactor Ventilation Upgrades

Official notice
Competition analysis

Authority: Nuclear Restoration Services Limited (Public body)

WorksCompetitive flexible procedureAbove thresholdSME suitable
Sectors: Construction & Civil Engineering (45) Delivery: Delivery location not published
Planned pipeline value£12,500,000pipeline notice, not a live tender
Tender notice expected 11 Jan 2027from the planned procurement notice
Contract term 2 yrs 9 moends 13 Sept 2030 · up to 14 Mar 2031 with extensions · starts 13 Dec 2027
Notice summaryFrom the published notice

Procurement, Manufacture, Installation and Commissioning for Prototype Fast Reactor facility Ventilation Upgrade. Noting that previous notices have been published which due to technicalities are not linked to this notice.

What is being bought

Published requirement description

Procurement, Manufacture, Installation and Commissioning for Prototype Fast Reactor facility Ventilation Upgrade. Noting that previous notices have been published which due to technicalities are not linked to this notice.

UK - 1194

www.find-tender.service.gov.uk/Notice/026167-2026 ↗

UK- 1148

www.find-tender.service.gov.uk/Notice/047874-2026 ↗

  • How the procedure runs: Two stage procedure, stage one down selection on Conditions of Participation, stage two invitation to tender.

CPV: Mechanical engineering installation works

More open work like this

Other notices open now · live search, filters set

Open tenders from Nuclear Restoration Services LimitedSearch filtered to this authorityOpen tenders in Mechanical installationsSearch filtered to CPV 4535

The lotProcurement structure

single lot · value published
Lot #1PlannedRenewal 2 yrs 9 moSMEPublished value£12,500,000
Contract period: 13 Dec 2027 – 13 Sept 2030 (2 yrs 9 mo) · up to 14 Mar 2031 with extensionsValue: £12,500,000 exc. VAT · £15,000,000 inc. VAT
Eligibility: SME eligible
Extensions: Delays to completion arising from compensation events.
45351000 Mechanical engineering installation works
Pre-qualification & selection criteria (PQQ)2
  • Economic & financial standing

    Insurance

    a. Employer’s (Compulsory) Liability Insurance - £10,000,000

    b. Public Liability Insurance = £10,000,000

    c. Professional Indemnity Insurance = £5,000,000

    Compliance with UK data protection law.

    Payments in contracts over £5m p.a.

    Supply Chain Payment Systems

    Carbon Reduction in contracts over £5m p.a.

    Modern Slavery Statement

    Steel in Government Contract

  • Technical & professional ability

    Relevant experience and contract examples.

    Experience of sub-contractor management.

    Organisational Qualifications Standards - Health and Safety, Environmental, Quality.

    CDM Regulations Principal Contractor.

Who is likely to bid for this lot ↓

What it takes to win
i

Evaluation split and conditions of participation as published; the tender pack may add more
How bids were scored
Quality: 55%Price: 25%Social value: 20%
Published sub-criteria (3)
  • Technical: 55%
  • Commercial: 25%
  • Social Value: 20%
Published award criteria (3)
  • Technical: Methodology, Programme and Resources
  • Social Value: Social Value Outcome
  • Commercial: Total of the Prices
Conditions of participation2
  • Economic & financial standing

    Insurance

    a. Employer’s (Compulsory) Liability Insurance - £10,000,000

    b. Public Liability Insurance = £10,000,000

    c. Professional Indemnity Insurance = £5,000,000

    Compliance with UK data protection law.

    Payments in contracts over £5m p.a.

    Supply Chain Payment Systems

    Carbon Reduction in contracts over £5m p.a.

    Modern Slavery Statement

    Steel in Government Contract

  • Technical & professional ability

    Relevant experience and contract examples.

    Experience of sub-contractor management.

    Organisational Qualifications Standards - Health and Safety, Environmental, Quality.

    CDM Regulations Principal Contractor.

What this means for your bid
  • Price carries 25 of 100 points: a 10% discount moves about 2.5 points. The method statement decides this lot, not the discount.

Price arithmetic assumes straight proportional scoring; the tender pack may use another formula.

Pipeline intelligence · planning stage: how this market runs before the tender is published

How Nuclear Restoration Services Limited buys Mechanical installations (CPV 4535), and who usually turns up

Nuclear Restoration Services Limited’s published record next to the market for the same work. Frameworks and DPS are left out: they draw different bid counts. Whole-market view: Mechanical installations (CPV 4535) →

1

How the contest usually goes

Winner shares use published awards; bid and price charts use contested lots.

Question for the bid
This buyerNuclear Restoration Services Limited · all categories
The marketMechanical installations (CPV 4535)
What to do with it
How often do SMEs win?
i

The counts under this question show how many awards have a known supplier size.

Buyer: 240 of 554 known-size awards · market: CPV 4535 · North West England (authority’s region), n=10
43%80%

Small firms have won here. Neither number says whether you qualify; it describes who has been winning.

How often do local suppliers win?
i

Local means the winner is registered in the region where that award was delivered. The market figure counts awards delivered in North West England (authority’s region).

Buyer: 36 of 78 known-location awards · market: CPV 4535 · North West England (authority’s region), n=8
46%38%

Most of this buyer’s recorded winners were registered outside the region where that award was delivered.

How long to a decision?
i
Buyer: 9 decided notices · market: division 45 · North West England (authority’s region), n=220
83 days39 days

Half of these awards have an award date within 83 days of the bid deadline.

How often single-bid or direct?
i

Both shares are minimums: some awards have no bid count.

Buyer: at least 289 of 437 procurements with awards had no recorded rival · market: CPV 4535 · North West England (authority’s region), n=13
66%31%

Direct awards or one recorded bid are common here. Check the route before spending time on a bid.

How many bids did past lots attract?

i
This buyer18 lots with bid counts · all categories
6% had one bid
The market254 lots with bid counts · division 45 · North West England (authority’s region)
10% had one bid
% of lots with a published bid count: this buyer (18) / the market (254) · select a colour for counts
1 bid6% / 10%
Buyer: 1 of 18 lots with published bid counts. Market: 25 of 254 lots with published bid counts.
2–344% / 26%
Buyer: 8 of 18 lots with published bid counts. Market: 66 of 254 lots with published bid counts.
4–644% / 30%
Buyer: 8 of 18 lots with published bid counts. Market: 75 of 254 lots with published bid counts.
7+6% / 35%
Buyer: 1 of 18 lots with published bid counts. Market: 88 of 254 lots with published bid counts.

How did awards compare with estimates?

i
This buyer12 lots with estimate and award · all categories
50% below estimate
The market5 lots with estimate and award · CPV 4535 · UK-wide
40% below estimate
% of lots with an estimate and award: this buyer (12) / the market (5) · select a colour for counts
Below estimate50% / 40%
Buyer: 6 of 12 lots with an estimate and award. Market: 2 of 5 lots with an estimate and award.
Within ±2%33% / 20%
Buyer: 4 of 12 lots with an estimate and award. Market: 1 of 5 lots with an estimate and award.
Above estimate17% / 40%
Buyer: 2 of 12 lots with an estimate and award. Market: 2 of 5 lots with an estimate and award.
2

Assess each lot
i

Open a lot for its forecast, this buyer’s previous supplier and possible competitors, from published award history, not a bid list

Lot #1CPV 453533 monthsSME suitablePublished estimate£13m
Expected competition
i

Each lot shows its own forecast based on its own category; forecasts for different lots of the same notice are not comparative. The bar shows 254 past lots.

—No model forecast yet10% chance of a single bid
Past bids on 254 similar lots
1 bid10%
25 of 254 similar past lots received 1 bid (10%).
2–326%
66 of 254 similar past lots received 2–3 (26%).
4–630%
75 of 254 similar past lots received 4–6 (30%).
7+35%
88 of 254 similar past lots received 7+ (35%).
Comparable past lots usually drew 5 bids.
Commercial price forecast
i

No comparable awards for this lot yet.

—No model forecast yet
No comparable awards on record for this lot’s category yet. The published estimate is £13m, and the forecast stays empty until the market has a record to read.

Who has supplied this buyer on similar work?
i

No earlier contract of this buyer matches this lot on the published record.

Who could compete for this lot?
i

Restricted route (Stage 2 ITT / Shortlist): Bidding is restricted to invited candidates who qualified at Stage 1. Uninvited suppliers cannot participate in this round.

Candidate suppliers for this notice have not been worked out yet, so this is not a verdict that nobody fits.

About this data
  • Estimates, labelled. The price range, possible competitors and earlier-work matches are our estimates from past awards, not published facts, win chances or price advice. The buyer’s own record and the wider market are shown apart, never mixed.
  • Source. Official UK public procurement notices (Find a Tender and Contracts Finder), reused under the Open Government Licence v3.0, updated through the day and rebuilt nightly. Not every figure uses both feeds, and each one shows how many records it rests on: see the methodology. Spotted something wrong? Tell us.

Procedure terms & legal framework

From the official record
Procedure method
Competitive flexible procedure
Legal basis
UKPGA · 2023/54 Procurement Act 2023
Procurement category
Works
Notice status
Planned procurement
Procurement threshold
Above threshold (FTS publication)
Regulatory regime
Standard
Commercial structure
Stand-alone contract (no framework)
Competition type
Competitive procedure
GPA / WTO covered
Unspecified in notice
Recurring procurement
Unspecified in notice
First published
12 Nov 2026, 13:40 GMT
Last source update
12 Nov 2026, 13:40 GMT
Award evaluation window
Submission end – 3 Sept 2027
Authority reference
C26426
FTS notice number
2026/S 000-107563
Latest notice
Planned procurement notice (UK3)
Classification (CPV)
Mechanical engineering installation works
Delivery area
Not published
Official registry OCID
ocds-h6vhtk-07ba8f Find a Tender
How it runs

Two stage procedure, stage one down selection on Conditions of Participation, stage two invitation to tender.

Review and risk notes
Risks

Replacing sections of existing ductwork.

Stored plant and materials becoming redundant.

Concrete panels damaged from works.

Backfill being contaminated.

Hazards such as asbestos found during installation.

Groundworks encountering contamination.

Other projects impacting the schedule.

Breaking radiological containment and discovery of higher levels of contamination than calculated.

How it was run

Official notice
Run through: Atamis (Health Family) · Who buys & how to bid on Atamis
Supplier login requiredElectronic submission allowedLanguage: EN
Access & registration note: Free · one account PER buying organisation portal · password resets come "from Salesforce.com" (check spam)
Requests to participate (first stage)
5 Feb 2027, 12:00 GMT
Submission deadline
5 Feb 2027, 12:00 GMT
Clarification deadline
5 Feb 2027, 12:00 GMT
Submission channel
Official e-sourcing portal
Electronic submission
Allowed
Accepted languages
en
Detailed submission instructions & authority contactsFrom official release

atamis-2464.my.site.com/s/Welcome ↗

Timeline

12 Nov 2026 → 13 Dec 2027 · 6 dates
  1. Planning notice published22h ago
    12 Nov 2026, 13:40 GMT
  2. Today
    13 Nov 2026
  3. Tender notice expectedin 59 days
    11 Jan 2027, 23:59 GMT
  4. Clarification questions byin 83 days
    5 Feb 2027, 12:00 GMT
  5. Submission deadlinein 83 days
    5 Feb 2027, 12:00 GMT
  6. Award decision expected byin 294 days
    3 Sept 2027, 23:59 BST
  7. Contract startsin 394 days
    13 Dec 2027

Notice history

1 event · 1 release on Find a Tender
  1. Planned procurement notice published
    12 Nov 2026, 13:40 GMT
    UK3

Commercial outcome & contract awards

Pipeline notice
Awards (0)
No award published
Contracts (0)
No contract published
Bid statistics
No aggregate bid statistics published

Contracting authority & participating public bodies

Nuclear Restoration Services Limited

Contracting authorityPublic authority - sub-central government GB-PPON: PXPQ-2228-DGTY Hinton House, Birchwood Park Avenue, Risley, Warrington, North West, WA3 6GRContact name, email, phone

Official documents & specifications (1)

Official links; attachments are not copied

Notices published for this procedure