Official UK procurement notice
Maintenance and Replacement of Compressors and Driers across the London Underground Estate
Authority: Transport for London (Public body)
The purpose of this Planned Procurement notice is to notify the market of a future- tender for the Maintenance and Replacement of Compressors and Driers across the London Underground Estate. The proposed service will be delivered through a single-supplier model under a consolidated contract, providing a consistent and integrated approach to the management of these safety-critical assets. The future contract will provide maintenance and statutory compliance services for compressed air systems and pressure vessel assets across London Underground, excluding Power Assets. Published service areas include: Planned Maintenance: Scheduled inspections, servicing, and performance checks to maintain asset reliability, availability, and statutory compliance.; Fault Response: Reactive support and emergency attendance in response to equipment failures, alarms, and operational incidents.; Fault Rectification: Diagnosis and repair of faults, including component replacement, system reinstatement, and…
What is being bought
Published requirement descriptionThe purpose of this Planned Procurement notice is to notify the market of a future- tender for the Maintenance and Replacement of Compressors and Driers across the London Underground Estate.
The proposed service will be delivered through a single-supplier model under a consolidated contract, providing a consistent and integrated approach to the management of these safety-critical assets.
The future contract will provide maintenance and statutory compliance services for compressed air systems and pressure vessel assets across London Underground, excluding Power Assets.
The services will support compressed air and pressure vessel assets associated with:
- Rolling Stock maintenance facilities
- Signalling infrastructure
- Fire safety systems
- Depot tooling and workshop equipment
- Manufacturing facilities
- Station smoke extraction systems
- Effluent ejectors
- Train cleaning systems
The scope includes:
- Planned Maintenance: Scheduled inspections, servicing, and performance checks to maintain asset reliability, availability, and statutory compliance.
- Fault Response: Reactive support and emergency attendance in response to equipment failures, alarms, and operational incidents.
- Fault Rectification: Diagnosis and repair of faults, including component replacement, system reinstatement, and verification testing.
- Critical Spares Management: Supply and management of essential spare parts required to maintain asset availability and support rapid fault recovery.
- Statutory Examinations: Delivery of inspections, Written Schemes of Examination, and certification activities required under the Pressure Systems Safety Regulations (PSSR).
CPV: Air compressors · Compressed-air dryers
The lotProcurement structure
single lot · value publishedLot #1PlannedRenewalPublished value£4,100,000
Pipeline intelligence · planning stage: how this market runs before the tender is published
How Transport for London buys Pumps and compressors (CPV 4212), and who usually turns up
Transport for London’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: Pumps and compressors (CPV 4212) →
How the contest usually goes
Winner shares use published awards; bid and price charts use contested lots.
i
How often small and medium firms win.
Share of awards where the winner’s size is known.
The counts under this question show how many awards have a known supplier size.
Small firms have won here. Neither number says whether you qualify; it describes who has been winning.
i
How often local firms win similar work.
Winners with a registered address in the delivery region, out of awards with a known address.
Local means the winner is registered in the region where that award was delivered. The market figure counts awards delivered in Greater London.
A local branch does not count if the registered address is elsewhere.
Most of this buyer’s recorded winners were registered in the region where that award was delivered.
i
How long buyers here take to decide after bids close.
Middle value in days from the bid deadline to the award date, on competitions that published both.
Only decided tenders count, so slow ones still waiting are not in.
Half of these awards have an award date within 96 days of the bid deadline.
i
How often work is awarded with no recorded rival.
Direct awards and tenders where every published lot count shows one bid.
Both shares are minimums: some awards have no bid count.
Thin markets produce this too; it is not proof of a tailored specification.
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
How many bids past lots received.
Each colour is a bid-count range. Only competed lots with a published count are included.
Past bids do not predict this tender.
1 bid47% / 38%
2–346% / 50%
4–65% / 13%
7+2% / 0%
How did awards compare with estimates?
i
Where winning prices landed against estimates.
Awards below, close to or above the estimate, per lot. The buyer side adds below-threshold contracts with a pre-award estimate; an award inside a published range counts as close.
Past prices are a guide, not a bid price.
Below estimate36% / 56%
Within ±2%50% / 11%
Above estimate14% / 33%
Assess each lot i
What past awards tell you about each lot.
See the forecast, this buyer’s earlier suppliers and firms with relevant wins.
No supplier is confirmed as a bidder.
i
What past awards tell you about each lot.
See the forecast, this buyer’s earlier suppliers and firms with relevant wins.
No supplier is confirmed as a bidder.
Open a lot for its forecast, this buyer’s previous supplier and possible competitors, from published award history, not a bid list
Lot #1CPV 3972Published estimate£4.1m
This lot is listed as CPV 3972. The table above uses the notice category.
i
How many bids this lot may attract.
The forecast uses similar past competitions. The bar shows either that forecast or past bid counts; the line below says which.
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 31 past lots.
A forecast, not a list of bidders.
1 bid10%
2–310%
4–648%
7+32%
i
Where the award price may land.
The forecast uses similar awards and the buyer’s estimate. The band covers the middle half of likely prices.
No comparable awards for this lot yet.
A statistical guide from past awards, not a price to bid.
Who has supplied this buyer on similar work? i
Who has done similar work for this buyer.
Past contracts are matched by buyer, title and type of work.
A past supplier may not bid again.
i
Who has done similar work for this buyer.
Past contracts are matched by buyer, title and type of work.
A past supplier may not bid again.
No earlier contract of this buyer matches this lot on the published record.
Who could compete for this lot? i
Who could compete for this lot?
Firms with relevant past wins. On a framework, we show firms on that agreement.
None is confirmed as a bidder.
i
Who could compete for this lot?
Firms with relevant past wins. On a framework, we show firms on that agreement.
None is confirmed as a bidder.
Candidate suppliers for this notice have not been worked out yet, so this is not a verdict that nobody fits.
About this data
- Source. Official UK public procurement notices (Find a Tender and Contracts Finder), reused under the Open Government Licence v3.0. New notices arrive through the day; the figures are rebuilt nightly. Contracts Finder appears in live search, the Retender Radar, contract pages, organisation counts, the earlier contracts and past suppliers on a tender's competition panel, the buyer's decision figure and its award against estimate; the other analytical figures are built from Find a Tender notices.
- Two views, kept apart. The authority’s own track record and the wider market for the same kind of work sit side by side and are never mixed. Where the local picture is too thin, a figure widens to a broader market and says which one it used.
- Forecasts are labelled. The price forecast and its range, possible competitors and the earlier-work matches are our estimates from past awards: not published facts, not win chances and not price advice. Official notices do not say who is bidding.
- Every figure shows what it rests on. Not every notice publishes a bid count, a value or a delivery region, so each figure carries the number of records behind it, and one built on few records is marked as such. The on a figure explains it; the counting rules are in 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
- Goods
- Notice status
- Planned procurement
- Procurement threshold
- Above threshold (FTS publication)
- Regulatory regime
- Utilities
- Commercial structure
- Stand-alone contract (no framework)
- Competition type
- Competitive procedure
- GPA / WTO covered
- Unspecified in notice
- Recurring procurement
- Unspecified in notice
- First published
- 11 Nov 2026, 13:13 GMT
- Last source update
- 11 Nov 2026, 13:13 GMT
- Award evaluation window
- Submission end – 6 Jul 2027
- FTS notice number
2026/S 000-107124- Latest notice
- Planned procurement notice (UK3)
- Classification (CPV)
- Delivery area
- Official registry OCID
ocds-h6vhtk-07b9a2Find a Tender
How it was run
Official notice- Submission deadline
- 8 Feb 2027, 12:00 GMT
- Submission channel
- Official e-sourcing portal
- Electronic submission
- Allowed
- Accepted languages
- en
Tender documents and procurement communications will be issued electronically through SAP Ariba.
All suppliers who wish to participate must be registered to participate in the future tender.
If you encounter any problems with registration please contact [email protected]
Additionally, your organisation must have a Public Procurement Organisation Number PPON). A PPON is a Unique Identifier (UI) assigned to organisations that participate in public procurement, generated when an organisation registers on the Find a Tender Service (FTS). It is used to manage and publish notices related to public procurement and connects information about the organisation digitally. Your PPON is a combination of 12 letters and numbers, separated by hyphens. For example, EFGH-1234-IJKL.
Find a Tender is now the Central Digital Platform (CPD). Registration is mandatory to participate in public sector procurements under the Procurement Act 2023. If your organisation is not already registered on Find a Tender, please ensure that you register as soon as possible and obtain your organisation's Unique Identifier via the site link below:
Timeline
11 Nov 2026 → 1 Sept 2027 · 5 dates- Planning notice published16h ago11 Nov 2026, 13:13 GMT
- Today12 Nov 2026
- Tender notice expectedin 4 days16 Nov 2026, 23:59 GMT
- Submission deadlinein 88 days8 Feb 2027, 12:00 GMT
- Award decision expected byin 236 days6 Jul 2027, 23:59 BST
- Contract startsin 292 days1 Sept 2027, 00:00 BST
Notice history
1 event · 1 release on Find a Tender- Planned procurement notice published11 Nov 2026, 13:13 GMTUK3
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
Official documents & specifications (1)
Official links; attachments are not copiedNotices published for this procedure
- Planned procurement notice Planned procurement notice on Find a Tender