Official UK procurement notice
Harwich Office Upgrades - HVAC
Authority: Trinity House (Central government)
What is being bought
Published requirement descriptionTrinity House have HVAC systems installed in two buildings, known as the main office (3 floors) and buoy yard (2 floors), at their Harwich site. These systems have been operational since 2006 and are maintained on a regular basis. The system consists of a mix of floor wide arrangements with fan coil units in the roof space as well as dedicated room based independent units. All items are from the Daikin range and can be centrally controlled and configured via a portal.
These works are for the supply of all the necessary equipment on a like-for-like basis to meet the original building performance (cooling / heating) of all the HVAC systems across two buildings, excluding the two IT server rooms. In addition, all equipment is to be installed, with full co-ordination, noting the need to maintain the working office environment. This will need the full management, installation, and configuration of the systems, with an acceptance test, as well as training on supervisory local and remote platforms.
CPV: Heating, ventilation and air-conditioning installation work
The lotProcurement structure
single lot · value publishedLot #1Published value£325,000
What it takes to wini
How this buyer will score bids.
The evaluation criteria and weights exactly as published on the notice, grouped by family (price, quality, social value and so on).
Evaluation split and conditions of participation as published; the tender pack may add morei
How this buyer will score bids.
The evaluation criteria and weights exactly as published on the notice, grouped by family (price, quality, social value and so on).
Published sub-criteria (5)
- Quality of Proposal: 30%
- Proposal for a three-year maintenance and support package: 15%
- Demonstratable experience of similar works and evidence of contractor ability to provide requirement: 15%
- Provision of timed implementation plan: 15%
- Suitability of financial proposal: 25%
Published award criteria (5)
- Quality of Proposal
- Proposal for a three-year maintenance and support package
- Demonstratable experience of similar works and evidence of contractor ability to provide requirement
- Provision of timed implementation plan
- Suitability of financial proposal
No conditions of participation were published on the notice; check the tender documents.
- Price carries 25 of 100 points: a 10% discount moves about 2.5 points. The method statement decides this lot, not the discount.
- Turnover usually expected at this size: about £162,389 (twice the annual value).
Price arithmetic assumes straight proportional scoring; the tender pack may use another formula. Turnover is an indicative market norm (≈2× annual value), not a published condition.
Competition analysis · published record, not a forecast of who will bid
How Trinity House buys Plumbing and sanitary works (CPV 4533), and who usually turns up
Trinity House’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: Plumbing and sanitary works (CPV 4533) →
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.
A local branch does not count if the registered address is elsewhere.
Most of this buyer’s recorded winners were registered outside 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 20 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 bid4% / 8%
2–348% / 26%
4–636% / 28%
7+12% / 38%
How did awards compare with estimates?
i
Where winning prices landed against estimates.
Each colour shows awards below, close to or above the published estimate, one lot at a time.
Past prices are a guide, not a bid price.
Below estimate67% / 42%
Within ±2%17% / 31%
Above estimate17% / 27%
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 4533Published estimate£325k
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.
A forecast, not a list of bidders.
1 bid5%
2–322%
4–644%
7+28%
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.
Based on 4 comparable awards. Each lot reflects its own category; forecasts for different lots of the same notice are not comparative.
A statistical guide from past awards, not a price to bid.
Middle 50%£274k–£325k
Estimate£325k
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.
| Supplier | Won in this category | Live contracts | Award vs estimate |
|---|---|---|---|
Aaron Services LtdLarge | £117m26 awards in 36m · last 1 months ago | 3 live · £25m iPublic contracts this supplier still holds. Its awards whose published end date is still in the future, with their values. Many contracts publish no end date, so this is a floor, not the whole book. Unexpired says nothing about spare capacity. | 18% below n=4 |
| £27m9 awards in 36m · last 2 months ago | 6 live · £28m iPublic contracts this supplier still holds. Its awards whose published end date is still in the future, with their values. Many contracts publish no end date, so this is a floor, not the whole book. Unexpired says nothing about spare capacity. | at estimate n=2 | |
| £15m16 awards in 36m · last 2 months ago | 6 live · £14m iPublic contracts this supplier still holds. Its awards whose published end date is still in the future, with their values. Many contracts publish no end date, so this is a floor, not the whole book. Unexpired says nothing about spare capacity. | at estimate n=7 | |
| £1.3m15 awards in 36m · last 1 months ago | 3 live · £360k iPublic contracts this supplier still holds. Its awards whose published end date is still in the future, with their values. Many contracts publish no end date, so this is a floor, not the whole book. Unexpired says nothing about spare capacity. | no comparable pairs | |
| £1.2m6 awards in 36m · last 2 months ago | 2 live · £1.1m iPublic contracts this supplier still holds. Its awards whose published end date is still in the future, with their values. Many contracts publish no end date, so this is a floor, not the whole book. Unexpired says nothing about spare capacity. | 29% below n=4 |
About this data
- Source. Official UK public procurement notices (Find a Tender), reused under the Open Government Licence v3.0. New notices arrive through the day; the figures are rebuilt nightly.
- 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
- Below threshold - open competition
- Legal basis
- UKPGA · 2023/54 Procurement Act 2023
- Procurement category
- Works
- Notice status
- Open for tender
- Procurement threshold
- Below threshold
- 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
- 23 Oct 2026, 10:40 BST
- Last source update
- 23 Oct 2026, 10:40 BST
- Authority reference
CM56- FTS notice number
2026/S 000-100307- Latest notice
- Tender notice (UK4)
- Classification (CPV)
- Delivery area
- Official registry OCID
ocds-h6vhtk-078e99Find a Tender
How to participate & submission route
Official notice Submit via Delta eSourcing- Requests to participate (first stage)
- —
- Tender submission deadline
- 4 Dec 2026, 12:00 GMT
- Clarification deadline
- 1 Dec 2026, 17:00 GMT
- Submission channel
- Official e-sourcing portal
- Electronic submission
- Allowed
Submissions must be issued via Delta www.delta-esourcing.com ↗, utilising Access Code P8K79HYZ2N.
Timeline
23 Oct 2026 → 18 Jan 2027 · 4 dates- Tender notice publishedearlier today23 Oct 2026, 10:40 BST
- Today23 Oct 2026
- Clarification questions byin 39 days1 Dec 2026, 17:00 GMT
- Submission deadlinein 42 days4 Dec 2026, 12:00 GMT
- Contract startsin 86 days18 Jan 2027
Notice history
1 event · 1 release on Find a Tender- Tender notice published23 Oct 2026, 10:40 BSTUK4
Commercial outcome & contract awards
Nothing awarded yet- 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
- Tender notice Tender notice on Find a Tender