Find a TenderAwardedContract award notice
Published 17 Apr 2026, 14:06 BST

Official UK procurement notice

NHM150 Western Galleries - Base Build Lead Architect

Official notice

Authority: Natural History Museum (Central government)

ServicesCompetitive flexible procedureAbove thresholdSME suitable
Published estimate£2,000,000≈ £358k / year · £2,400,000 inc. VAT23.5% below published estimate
Submissions closed 19 Jun 2026awarded 6 Aug 2026
Award (standstill) to Haworth Tompkins Ltd
Contract term 5 yrs 7 moends 31 Mar 2032 · up to 31 May 2033 with extensions · starts 7 Sept 2026

What is being bought

Published requirement description

The 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 published
Lot #1AwardedRenewal 5 yrs 7 moSMEPublished value£2,000,000
Contract period: 7 Sept 2026 – 31 Mar 2032 (5 yrs 7 mo) · up to 31 May 2033 with extensionsValue: £2,000,000 exc. VAT · £2,400,000 inc. VAT
Delivery: LondonEligibility: SME eligible
Extensions: 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)

What it takes to win
i

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 more
How bids were scored
Quality: 50%Price: 40%Social value: 10%
Published sub-criteria (3)
  • Technical Questions: 50%
  • Pricing: 40%
  • Social Value: 10%
Published award criteria (3)
  • Technical Questions
  • Social Value
  • Pricing
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.

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)
Architectural and related servicesArt gallery construction workBuildings of particular historical or architectural interestConstruction work for art and cultural buildingsLibrary, archives, museums and other cultural servicesMuseum construction workMuseum servicesMuseum services and preservation services of historical sites and buildings
Delivery area
London (UKI)
Official registry OCID
ocds-h6vhtk-06855f Find 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
Run through: Delta eSourcing · Who buys & how to bid on Delta
Public notice page · account needed to bidElectronic submission allowedLanguage: EN
Access & registration note: Free Select account; no DUNS asked at signup
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
Detailed submission instructions & authority contactsFrom official release

Timeline

17 Apr 2026 → 7 Sept 2026 · 11 dates
  1. Planning notice published187 days ago
    17 Apr 2026, 14:06 BST
  2. Market engagement172 days ago
    1 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).

  3. Next notice expected162 days ago
    11 May 2026, 23:59 BST
  4. Tender notice published160 days ago
    13 May 2026, 17:32 BST
  5. Clarification questions by146 days ago
    27 May 2026, 17:00 BST
  6. Submission deadline124 days ago
    19 Jun 2026, 12:00 BST
  7. Assessment summaries sent76 days ago
    6 Aug 2026, 00:00 BST
  8. Latest notice published76 days ago
    6 Aug 2026, 12:15 BST
  9. Standstill ends64 days ago
    17 Aug 2026, 23:59 BST
  10. Award decision expected by60 days ago
    21 Aug 2026, 23:59 BST
  11. Contract starts44 days ago
    7 Sept 2026, 00:00 BST

Notice history

8 events · 3 releases on Find a Tender · since 17 Apr 2026
  1. Preliminary market engagement notice published
    17 Apr 2026, 14:06 BST
    UK2
  2. Tender notice published
    13 May 2026, 17:32 BST
    UK4
  3. Status changed to active
    13 May 2026, 17:32 BST
  4. Procurement method changed
    13 May 2026, 17:32 BST
  5. Deadline published: 19 Jun 2026, 12:00 BST
    13 May 2026, 17:32 BST
  6. Contract award notice published
    6 Aug 2026, 12:15 BST
    UK6
  7. Status changed to complete
    6 Aug 2026, 12:15 BST
  8. Contract signature expected
    31 Aug 2026, 23:59 BST
    scheduled

Commercial outcome & contract awards

Published awards, contracts and bid statistics, not a forecast
Awards 1
Awarded value £1,530,8451 award exc. VAT
Bids received 75 from SMEs
Awarded toValueDateStatus
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)£1,530,8456 Aug 2026standstill to 17 Aug 2026Standstill

Bid statistics published by the authority

BidsSMEVCSEValid bid range
7final-stage tenders · 28 at stage one50—

Contracting authority & participating public bodies

Natural History Museum

Contracting authorityPublic authority - central government GB-PPON: PJBJ-4723-MZPX Cromwell Road, London, London, SW7 5BDContact name, email

Bidders & participating suppliers

1 commercial party on the notice
  • Haworth TompkinsAwarded supplierGB-PPON: PGRR-5538-GRBZ 110 Golden Lane, London, London, EC1Y 0TLContact name, email

Official documents & specifications (3)

Official links; attachments are not copied

Notices published for this procedure