Official UK procurement notice
NHM150 Western Galleries - Base Build Lead Architect
Authority: Natural History Museum (Central government)
What is being bought
Published requirement descriptionThe Natural History Museum has announced important transformations of its internal spaces ahead of the 150th anniversary of the opening of the South Kensington site, occurring in 2031. As part of these transformations, the popular Dinosaur Gallery will be restored, and the Origins Gallery, the Old General Herbarium and the Swing Space, currently closed to the public, will be reopened and returned to public use. These galleries are identified collectively as the' Western Galleries'. The works in each gallery will be articulated in two phases: base build, which is the object of this tender, and fit out, which will be tendered separately.
The first works to commence will be the Swing Space in Autumn 2027 (base build) for an opening in 2028, followed shortly after by the Botany Library and the Old General Herbarium, due in 2029, Dinosaur Gallery, opening in 2030, and Origins Gallery that will be completed in 2031.
A Feasibility Study has just been completed both for base build and fit-out leading to the identification of a set of recommended options for the base build and a set of design principles for the fit-out.
The base build works for all the galleries in scope will encompass design and works for (high-level scope, including but not limited to):
- Conservation of the gallery spaces
- Making good of the fabric of the building
- New ventilation and heating / cooling system and associated Building Works in Connection (BWIC)
- Mechanical, electrical and public health systems
- Creation of new plant rooms to support the increased needs of the spaces
- Required structural works
Additional works (including but not limited to):
- clearance of existing spaces
- Dismantling and removal of Dinosaur Gallery walkway
- Decant and recant of Botany Library contents
- Temporary relocation of Dino Shop
- Decant and relocation of offices to make room for the new circulation core
- Relocation and enlargement of ground floor café
- Conservation of existing fixtures and finishes (e.g. cabinets and bookcases) in Old General Herbarium and Botany Library
- Removal of existing Dino shop and dog leg corridor in the Swing Space
- Creation of 2 new vertical circulation cores (lifts and staircase)
- Decant and relocation of offices to make room for the new circulation core
- Creation of new toilets and ancillary spaces
- Relocation and enlargement of ground floor café
- Creation of new café on the first floor
- Fit out of new Dino Shop and the two cafes.
The appointed consultants will be asked to act as Lead Architect, developing the base build design for the galleries and ancillary spaces across RIBA stages 2-7, supervising and coordinating the works of the other base build consultants, such as, but not limited to, MEP consultants, circulation consultants, accessibility consultant and fire consultant and coordinating the fit-out consultants to ensure continuity between the projects. They will also be asked to provide Heritage consultancy, structural engineer, sustainability and BSA Principal Design services for the base build and fit out projects.
In order to access the documents for the tender exercise, all tenderers must complete the NDA available in the SQ stage document library. The NDA must be signed by an appropriate representative of the tendering company and returned to the Museum for countersignature. Once the NDA has been completed by both parties, it will be sent to tenderers for record keeping. The tenderer will then be added to the Tenderbox stage. Bidders who signed an NDA as part of the Pre-Market Engagement stage do NOT need to sign the NDA again, and will be added to the Tenderbox automatically. Once bidders have been added to the Tenderbox they will receive an automated e-mail from Delta.
- How the procedure runs: Stage 0 - Completion and return of NDA Stage 1 - Conditions of Participation and Invitation to Tender Stage 2 - Interviews
CPV: Architectural and related services · Art gallery construction work · Buildings of particular historical or architectural interest · Construction work for art and cultural buildings · Library, archives, museums and other cultural services · Museum construction work · Museum services · Museum services and preservation services of historical sites and buildings
The lotProcurement structure
single lot · value publishedLot #1AwardedRenewalPublished value£2,000,000
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 (3)
- Technical Questions: 50%
- Pricing: 40%
- Social Value: 10%
Published award criteria (3)
- Technical Questions
- Social Value
- Pricing
- Price carries 40 of 100 points: a 10% discount moves about 4 points. The method statement decides this lot, not the discount.
Price arithmetic assumes straight proportional scoring; the tender pack may use another formula.
Procedure terms & legal framework
From the official record- Procedure method
- Competitive flexible procedure
- Legal basis
- UKPGA · 2023/54 Procurement Act 2023
- Procurement category
- Services
- Notice status
- Awarded
- Procurement threshold
- Above threshold (FTS publication)
- Regulatory regime
- Standard
- Commercial structure
- Stand-alone contract (no framework)
- Competition type
- Competitive procedure
- GPA / WTO covered
- Yes (GPA)
- Recurring procurement
- Unspecified in notice
- First published
- 17 Apr 2026, 14:06 BST
- Last source update
- 6 Aug 2026, 12:15 BST
- Award evaluation window
- Submission end – 21 Aug 2026
- FTS notice number
2026/S 000-044150- Latest notice
- Contract award notice (UK6)
- Classification (CPV)
- Delivery area
- Official registry OCID
ocds-h6vhtk-06855fFind a Tender
- How it runs
Stage 0 - Completion and return of NDA
Stage 1 - Conditions of Participation and Invitation to Tender
Stage 2 - Interviews
How it was run
Official notice- Submission deadline
- 19 Jun 2026, 12:00 BST
- Clarification deadline
- 27 May 2026, 17:00 BST
- Submission channel
- Official e-sourcing portal
- Electronic submission
- Allowed
- Accepted languages
- en
Timeline
17 Apr 2026 → 7 Sept 2026 · 11 dates- Planning notice published187 days ago17 Apr 2026, 14:06 BST
- Market engagement172 days ago1 May 2026, 23:59 BST
Bidders are invited to an online Bidder Briefing Session and Q&A (to be held on Microsoft Teams) in w/c 4th May 2026. In order to register for this session bidders should sign the NDA which is available in the SQ stage document library. This must be returned by 5pm, Friday 1 May. The NDA must be signed by an appropriate representative of the tendering company and returned to the Museum for countersignature.
To access the SQ stage, please click here: www.delta-esourcing.com/respond/64839M3UD2 ↗
Once the NDA has been completed by both parties, it will be sent to tenderers for record keeping. The tenderer will then be invited to the briefing session. The date and time of the session will be confirmed shortly, and the invite will be sent out Tuesday 4 May. The session will be recorded and circulated to all bidders, including those who were unable to attend.
All bidders who have completed the NDA will be given access to the tender documents, which are currently expected to be available from the 11th May 2026 (this date is subject to change).
- Next notice expected162 days ago11 May 2026, 23:59 BST
- Tender notice published160 days ago13 May 2026, 17:32 BST
- Clarification questions by146 days ago27 May 2026, 17:00 BST
- Submission deadline124 days ago19 Jun 2026, 12:00 BST
- Assessment summaries sent76 days ago6 Aug 2026, 00:00 BST
- Latest notice published76 days ago6 Aug 2026, 12:15 BST
- Standstill ends64 days ago17 Aug 2026, 23:59 BST
- Award decision expected by60 days ago21 Aug 2026, 23:59 BST
- Contract starts44 days ago7 Sept 2026, 00:00 BST
Notice history
8 events · 3 releases on Find a Tender · since 17 Apr 2026- Preliminary market engagement notice published17 Apr 2026, 14:06 BSTUK2
- Tender notice published13 May 2026, 17:32 BSTUK4
- Status changed to active13 May 2026, 17:32 BST
- Procurement method changed13 May 2026, 17:32 BST
- Deadline published: 19 Jun 2026, 12:00 BST13 May 2026, 17:32 BST
- Contract award notice published6 Aug 2026, 12:15 BSTUK6
- Status changed to complete6 Aug 2026, 12:15 BST
- Contract signature expected31 Aug 2026, 23:59 BSTscheduled
Commercial outcome & contract awards
Published awards, contracts and bid statistics, not a forecast| Awarded to | Value | Date | Status |
|---|---|---|---|
| Haworth Tompkins Ltd7 Sept 2026 – 31 Mar 2032 · up to 31 May 2033Extensions: The Contract may be extended beyond the Initial Term on a maximum of 1 [one] occasion, for a period of up to 1 (one) year on each occasion (each a "Renewal Period") at NHM's sole discretion, by NHM giving the Contractor not less than 1 (one) months' notice prior to the expiry of the Initial Term or the Renewal Period (as applicable) | £1,530,845 | 6 Aug 2026standstill to 17 Aug 2026 | Standstill |
Bid statistics published by the authority
| Bids | SME | VCSE | Valid bid range |
|---|---|---|---|
| 7final-stage tenders · 28 at stage one | 5 | 0 | — |
Contracting authority & participating public bodies
Bidders & participating suppliers
1 commercial party on the notice- Haworth TompkinsAwarded supplier
Official documents & specifications (3)
Official links; attachments are not copiedNotices published for this procedure
- Contract award notice Contract award notice on Find a Tender
- Tender notice Tender notice on Find a Tender
- Preliminary market engagement notice Preliminary market engagement notice on Find a Tender