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Published 24 Oct 2025, 11:13 BST

Official UK procurement notice

9003532 - Supply of KB Mirror System for K21

Official notice

Authority: DIAMOND LIGHT SOURCE LIMITED (Central government)

GoodsOpen procedureAbove thresholdSME suitable
Sectors: Laboratory, optical and precision equipments (excl. glasses) (38) Delivery: South East (UKJ14)
Published estimate£350,000≈ £233k / year · £420,000 inc. VAT32.9% above published estimate
Submissions closed 24 Nov 2025awarded 19 Jan 2026
Awarded to XDS OXFORD LIMITED
Contract term 1 yr 6 moends 30 Jun 2027 · starts 16 Dec 2025

What is being bought

Published requirement description

Located on the Harwell Science & Innovation Campus in Oxfordshire, Diamond Light Source (DLS) is a leading-edge facility for science, engineering and innovation. DLS allows researchers from academia and industry to investigate the structure and behaviour of the world around us at the atomic and molecular level.

To continue delivering the world-changing science that Diamond enables, the facility is being upgraded to Diamond-II, a co-ordinated programme of development that combines a major machine upgrade with new instruments and complementary improvements to optics, detectors, sample environment and delivery capabilities, and computing, as well as integrated and correlative methods. This will be transformative in speed and spatial resolution and will offer users streamlined access to enhanced instruments for life and physical sciences.

The scope of the contract is for the design, supply of material, manufacture, assembly, test, delivery, installation and commissioning of a focussing mirror system for the K21 beamline.

The minimum scope of the contract is the design, manufacture, test, and delivery of:

  • VFM upward reflecting, X-ray mirror & mechanics.
  • HFM inboard reflecting, X-ray mirror & mechanics.
  • Motorized mechanical bender to adjust the curvature of VFM's reflecting surface.
  • Motorized mechanical bender to adjust the curvature of HFM'S reflecting surface.
  • Passive cooling (braids or similar) required due to upstream beam monochromatisation

by a double multilayer monochromator.

  • Vacuum vessel and associated controls.
  • Support frame.
  • Interface to beamline services.

CPV: Mirrors

The lotProcurement structure

single lot · value published
Lot #1Awarded 1 yr 6 moSMEPublished value£350,000
Contract period: 16 Dec 2025 – 30 Jun 2027 (1 yr 6 mo)Value: £350,000 exc. VAT · £420,000 inc. VAT
Delivery: South EastEligibility: SME eligible
38622000 Mirrors

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: 55%Price: 45%
Published sub-criteria (5)
  • Technical Quality: 25%
  • Experience and Capacity: 25%
  • Delivery: 5%
  • Commercial: 5%
  • Price: 40%
Published award criteria (5)
  • Technical Quality
  • Experience and Capacity
  • Commercial
  • Delivery
  • Price
What this means for your bid
  • Price carries 45 of 100 points: a 10% discount moves about 4.5 points. Quality carries 55 of 100: the paper moves it further than 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
Open procedure
Legal basis
UKPGA · 2023/54 Procurement Act 2023
Procurement category
Goods
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
24 Oct 2025, 11:13 BST
Last source update
13 Feb 2026, 15:44 GMT
Award evaluation window
Submission end – 4 Dec 2025
Authority reference
9003532
FTS notice number
2025/S 000-068109
Latest notice
Contract details notice (UK7)
Classification (CPV)
Mirrors
Delivery area
South East (UKJ14)
Official registry OCID
ocds-h6vhtk-05d330 Find a Tender

How it was run

Official notice
Run through: portal not identified
Electronic submission allowedLanguage: EN
Submission deadline
24 Nov 2025, 12:00 GMT
Submission channel
Official e-sourcing portal
Electronic submission
Allowed
Accepted languages
en
Detailed submission instructions & authority contactsFrom official release

Please email tender submission to:

diamond.ac.uk ↗

and send a hard copy to:

Diamond Procurement

Diamond House

Diamond Light Source Ltd

Harwelll Science & Innovation Campus

Didcot

Oxon

OX11 0DE

United Kingdom

Timeline

24 Oct 2025 → 13 Feb 2026 · 7 dates
  1. Tender notice published366 days ago
    24 Oct 2025, 11:13 BST
  2. Submission deadline335 days ago
    24 Nov 2025, 12:00 GMT
  3. Award decision expected by325 days ago
    4 Dec 2025, 23:59 GMT
  4. Contract starts314 days ago
    16 Dec 2025
  5. Assessment summaries sent279 days ago
    20 Jan 2026
  6. Standstill ends269 days ago
    29 Jan 2026, 23:59 GMT
  7. Latest notice published254 days ago
    13 Feb 2026, 15:44 GMT

Notice history

5 events · 3 releases on Find a Tender · since 24 Oct 2025
  1. Tender notice published
    24 Oct 2025, 11:13 BST
    UK4
  2. Contract award notice published
    20 Jan 2026, 13:14 GMT
    UK6
  3. Status changed to complete
    20 Jan 2026, 13:14 GMT
  4. Contract signature expected
    30 Jan 2026, 23:59 GMT
    scheduled
  5. Contract details notice published
    13 Feb 2026, 15:44 GMT
    UK7

Commercial outcome & contract awards

Published awards, contracts and bid statistics, not a forecast
Awards 1
Awarded value £465,0001 award exc. VAT
Bids received 55 from SMEs
Contracts signed 1latest 29 Jan 2026
Awarded toValueDateStatus
XDS OXFORD LIMITED9003532 - Diamond Light Source KB Mirror System for K2130 Jan 2026 – 30 Jul 2027£465,00019 Jan 2026Awarded

Contracts

  • 9003532 - Supply of KB Mirror System for K21 · XDS OXFORD LIMITED

    Signed
    29 Jan 2026
    Value
    £465,000
    Period
    29 Jan 2026 – 30 Jul 2027
    Status
    active

    No agreed KPIs: Contract value is below £5 million.

Bid statistics published by the authority

BidsSMEVCSEValid bid range
5final-stage tenders50—

Contracting authority & participating public bodies

DIAMOND LIGHT SOURCE LIMITED

Contracting authorityPublic authority - central government GB-COH: 04375679 · GB-PPON: PNGG-3778-PWBM Diamond House, Didcot, South East, OX11 0DEContact email

Bidders & participating suppliers

1 commercial party on the notice
  • XDS OXFORD LIMITEDAwarded supplierGB-COH: 04138193GB-PPON: PLZV-5432-GJHR Unit 1 Ferry Mills, Oxford, South East, OX2 0ESContact email

Official documents & specifications (4)

Official links; attachments are not copied

Tender pack and attachments

  • Technical specifications tenderTechnical specificationsVisit our web page: https://tenders.diamond.ac.uk Here Suppliers are required to complete a one-off simple registration form. You are then able to login to register an interest against the tender and download the Tender Documents.

Notices published for this procedure

  • Contract details notice contractContract details noticeUK7Contract details notice on Find a Tender
  • Contract award notice awardContract award noticeUK6Contract award notice on Find a Tender
  • Tender notice tenderTender noticeUK4Tender notice on Find a Tender