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Published 13 Nov 2026, 10:40 GMT

Official UK procurement notice

Boiler Room Upgrade at Kensington Palace

Official notice Submit via Delta eSourcing
Competition analysis

Authority: The Royal Household (Public body)

WorksBelow threshold - open competitionBelow thresholdSME suitable
Sectors: Industrial machinery (42)Construction Materials & Prefab (44)Construction & Civil Engineering (45) Delivery: Delivery location not published
Published estimate£325,000£325,000 inc. VAT
Submission deadline 11 Dec 202611:00 GMT · 27 days left
Clarification cut-off 2 Dec 202611:00 GMT · questions to the authority
Contract term 3 moends 30 Jun 2027 · starts 31 Mar 2027
Notice summaryFrom the published notice

The works are located within the Boiler Room serving the offices in apartments at Kensington Palace. The project comprises the replacement of the existing end-of-life atmospheric gas boilers with new high-efficiency condensing boilers, together with the installation of new hot water cylinders, associated pipework, valves and plate heat exchangers. The new heating system shall be designed to facilitate future connection to a heat network, which is currently being investigated through a joint RHPS/HRP feasibility study. The existing boiler flues, originally designed for atmospheric boilers, shall be surveyed and either replaced or relined as required to suit the new plant.

What is being bought

Published requirement description

The works are located within the Boiler Room serving the offices in apartments at Kensington Palace.

The project comprises the replacement of the existing end-of-life atmospheric gas boilers with new high-efficiency condensing boilers, together with the installation of new hot water cylinders, associated pipework, valves and plate heat exchangers. The new heating system shall be designed to facilitate future connection to a heat network, which is currently being investigated through a joint RHPS/HRP feasibility study.

The existing boiler flues, originally designed for atmospheric boilers, shall be surveyed and either replaced or relined as required to suit the new plant. The Contractor shall also assess the adequacy of the existing gas supply and undertake any necessary upgrades, including the replacement of obsolete mechanical gas drop safety valves with modern electrically operated solenoid valves.

The works shall include, but not be limited to:

•Removal and disposal of existing boilers, associated plant and redundant equipment.

•Installation, testing and commissioning of new condensing boilers.

•Installation of new hot water cylinders, plate heat exchangers, pipework, valves and associated ancillaries.

•Survey, replacement and/or relining of existing flues as required.

•Upgrades to the gas supply infrastructure where necessary.

•Removal and replacement of all electrical installations and equipment required to serve the new plant.

•Cleaning, flushing and dosing of the existing heating system to protect both the new plant and retained system components.

•Replacement of all thermostatic radiator valves (TRVs) and lockshield valves.

•Associated builders' work, making good and redecoration of the plant room upon completion of the works.

•Testing, commissioning and provision of all relevant certification, operation and maintenance manuals, and handover documentation.

The completed installation shall provide a significantly improved level of energy efficiency compared with the existing system while maintaining reliable heating and hot water services and enabling future integration with a district heat network.

CPV: Boiler installations · Boilers · Plant upgrade work

More open work like this

Other notices open now · live search, filters set

Open tenders from The Royal HouseholdSearch filtered to this authorityOpen tenders in Central-heating radiators and boilers and partsSearch filtered to CPV 4462

The lotProcurement structure

single lot · value published
Lot #1 3 moSMEPublished value£325,000
Contract period: 31 Mar 2027 – 30 Jun 2027 (3 mo)Value: £325,000 exc. VAT · £325,000 inc. VAT
Eligibility: SME eligibleTurnover guideline: ~£650,000/yr≈ 2× annual value
42160000 Boiler installations44621200 Boilers45259900 Plant upgrade work

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 are scored
Quality: 50%Price: 40%Environmental: 10%
Published sub-criteria (3)
  • Quality: 50%
  • Price: 40%
  • Sustainability: 10%
Published award criteria (3)
  • Quality
  • Sustainability
  • Price

No conditions of participation were published on the notice; check the tender documents.

What this means for your bid
  • Price carries 40 of 100 points: a 10% discount moves about 4 points. The method statement decides this lot, not the discount.
  • Turnover usually expected at this size: about £650,000 (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 The Royal Household buys Central-heating radiators and boilers and parts (CPV 4462), and who usually turns up

The Royal Household’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: Central-heating radiators and boilers and parts (CPV 4462) →

1

How the contest usually goes

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

Question for the bid
This buyerThe Royal Household · all categories
The marketCentral-heating radiators and boilers and parts (CPV 4462)
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: 6 of 8 known-size awards · market: CPV 4462 · UK-wide, n=40
75%90%

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.

Buyer: 2 of 4 known-location awards · market: CPV 4462 · UK-wide, n=38
2 of 437%

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

How long to a decision?
i
Buyer: 7 decided notices · market: division 44 · Greater London (authority’s region), n=26
85 days23 days

Half of these awards have an award date within 85 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 2 of 12 procurements with awards had no recorded rival · market: CPV 4462 · UK-wide, n=45
17%56%

Missing bid counts may hide more single-bid awards. This share is a minimum.

How many bids did past lots attract?

i
This buyer9 lots with bid counts · all categories
0% had one bid
The market26 lots with bid counts · division 44 · Greater London (authority’s region)
8% had one bid
% of lots with a published bid count: this buyer (9) / the market (26) · select a colour for counts
1 bid0% / 8%
Buyer: 0 of 9 lots with published bid counts. Market: 2 of 26 lots with published bid counts.
2–333% / 27%
Buyer: 3 of 9 lots with published bid counts. Market: 7 of 26 lots with published bid counts.
4–656% / 46%
Buyer: 5 of 9 lots with published bid counts. Market: 12 of 26 lots with published bid counts.
7+11% / 19%
Buyer: 1 of 9 lots with published bid counts. Market: 5 of 26 lots with published bid counts.

How did awards compare with estimates?

i
This buyer7 lots with estimate and award · all categories
29% below estimate
The market19 lots with estimate and award · division 44 · Greater London (authority’s region)
37% below estimate
% of lots with an estimate and award: this buyer (7) / the market (19) · select a colour for counts
Below estimate29% / 37%
Buyer: 2 of 7 lots with an estimate and award. Market: 7 of 19 lots with an estimate and award.
Within ±2%43% / 16%
Buyer: 3 of 7 lots with an estimate and award. Market: 3 of 19 lots with an estimate and award.
Above estimate29% / 47%
Buyer: 2 of 7 lots with an estimate and award. Market: 9 of 19 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 44623 monthsSME suitablePublished estimate£325k
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.

4expected bids5% chance of a single bid
similar past contests in this category: 8
Forecast chances for this lot
1 bid5%
Chance this lot gets 1 bid: 5%. This is a forecast.
2–321%
Chance this lot gets 2–3: 21%. This is a forecast.
4–667%
Chance this lot gets 4–6: 67%. This is a forecast.
7+8%
Chance this lot gets 7+: 8%. This is a forecast.
Commercial price forecast
i

Based on 17 comparable awards. Each lot reflects its own category; forecasts for different lots of the same notice are not comparative.

£325kLevel with estimate
17 comparable awards
Forecast compared with the buyer’s estimate
Middle 50%£285k–£325k
Half of likely prices fall between £285,050 and £325,000.
Estimate£325k
The buyer published an estimate of £325,000 for this lot.
A 25% chance the award lands exactly on the estimate.

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

SupplierWon in this categoryLive contractsAward vs estimate
Seddon Construction LimitedLarge
8 panel places
£23m46 awards in 36m · last this month3 live · £2.2m
i
at estimate n=8
BSW Heating Ltd
2 panel places
£6.7m9 awards in 36m · last 3 months ago3 live · £5.1m
i
at estimate n=3
STONEHAM CONSTRUCTION LIMITEDSME
£3.6m8 awards in 36m · last 2 months ago1 live · £1.9m
i
no comparable pairs
William Freer LtdGroup company
1 panel places
£856k5 awards in 36m · last 4 months ago2 live · £364k
i
at estimate n=3
HOME UTILITY GROUP LIMITEDSME
2 panel places
£1.2m20 awards in 36m · last 5 months agoNone on fileno comparable pairs
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
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
13 Nov 2026, 10:40 GMT
Last source update
13 Nov 2026, 10:40 GMT
Authority reference
0112/PPTO
FTS notice number
2026/S 000-107877
Latest notice
Tender notice (UK4)
Classification (CPV)
Boiler installationsBoilersPlant upgrade work
Delivery area
Not published
Official registry OCID
ocds-h6vhtk-07bb55 Find a Tender

How to participate & submission route

Official notice Submit via Delta eSourcing
Submission portal named on this notice: Delta eSourcing · Who buys & how to bid on Delta
Public notice page · account needed to bidElectronic submission allowed
Access & registration note: Free Select account; no DUNS asked at signup
Requests to participate (first stage)
—
Tender submission deadline
11 Dec 2026, 11:00 GMT
Clarification deadline
2 Dec 2026, 11:00 GMT
Submission channel
Official e-sourcing portal
Electronic submission
Allowed
Detailed submission instructions & authority contactsFrom official release

www.delta-esourcing.com/delta/buyers/select/… ↗ Access Code: 8Z998FEY4M

Published estimate £325,000 excludes VAT (£325,000 including VAT).

Timeline

13 Nov 2026 → 31 Mar 2027 · 4 dates
  1. Tender notice published1h ago
    13 Nov 2026, 10:40 GMT
  2. Today
    13 Nov 2026
  3. Clarification questions byin 18 days
    2 Dec 2026, 11:00 GMT
  4. Submission deadlinein 27 days
    11 Dec 2026, 11:00 GMT
  5. Contract startsin 137 days
    31 Mar 2027, 00:00 BST

Notice history

1 event · 1 release on Find a Tender
  1. Tender notice published
    13 Nov 2026, 10:40 GMT
    UK4

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

The Royal Household

Contracting authorityPublic undertaking GB-PPON: PGLT-2499-PJTM Buckingham Palace, London, London, SW1A 1AAContact name, email, phone

Official documents & specifications (1)

Official links; attachments are not copied

Notices published for this procedure

  • Tender notice tenderTender noticeUK4Tender notice on Find a Tender