DIAMOND LIGHT SOURCE LIMITED: Contract Register & Procurement Profile

Companies House: Private Limited CompanySouth East EnglandDidcot

Companies House04375679 ↗

Open now1next deadline 28 Oct 2026
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Tenders you can still bid for.

Notices at tender stage whose deadline has not passed, counted the way the search counts them: a notice shows under every code and region it names.

Notices, last 12 months26-24% vs prior 12 months (34)
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Notices published in the last 12 months.

Counted per tender, not per lot, against the 12 months before where shown.

Typical bids per lot318.2% single-bid · 44 bid reports
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How many companies usually bid when this buyer runs a tender.

Middle value of the bid counts on its award notices, one per lot. Only real competitions count: direct awards and framework places are left out.

Based on 44 lots from this buyer’s competitions, last 24 months.

Last 24 months, all categories.

Top-3 supplier share21%of 84 awarded procedures · 59 suppliers
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How much of this buyer’s work goes to its three most frequent suppliers.

Share of its awarded tenders that name at least one of the top three. Each tender is counted once.

84 awarded tenders, 59 different suppliers.

Describes the record. It is not a sign of favouritism.

All awards we hold.

Contracts ending ≤18 months2911 within 6 months
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Contracts that finish in the next 18 months.

Published contracts with an end date in that window. No end date, not counted.

An end date does not confirm a new procurement.

Published award value, 24m£21mnet · on 39 of 39 published values · top 5 = 32%
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How much this buyer has awarded recently, by published values.

Sum of published VAT-exclusive awards to single suppliers, last 24 months. Left out: concession revenue, framework ceilings, repeated notices, equal-value duplicates.

Published values, not actual spend. The biggest rows are listed so you can check.

Open notices

1 live · deadline in the future or not published · as of page build

NoticeDeadlineDays leftPublished value
DLSITT1097 - Main Septum Magnets for Diamond-II28 Oct 20268d£400,000

What they buy
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What kind of work is bought here.

Notices by procurement category (CPV). A notice with several categories counts in each.

Last 24 months · CPV divisions on published procedures · a notice with several divisions counts in each

How they buy
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How work here is packaged.

Notices by commercial tool: a single contract, a framework, or a dynamic purchasing system.

Last 24 months · 60 notices · commercial tool and route as published on the notice, not a legal-regime claim

Commercial tool
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How work here is packaged.

Notices by commercial tool: a single contract, a framework, or a dynamic purchasing system.

  • Contract100%(60 notices)
    60 of 60 notices are Contract (100%).
Procedure route
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Which procedures buyers here use.

Notices by the procedure they declare: open, selective, limited or direct. Open and selective are competitions; limited and direct are not.

  • Open85%(51 notices)
    51 of 60 notices are Open (85%).
  • Route not published12%(7 notices)
    7 of 60 notices are Route not published (12%).
  • Direct award3%(2 notices)
    2 of 60 notices are Direct award (3%).
Typical bids per lot
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How many companies usually bid when this buyer runs a tender.

Middle value of the bid counts on its award notices, one per lot. Only real competitions count: direct awards and framework places are left out.

Based on 44 lots from this buyer’s competitions, last 24 months.

Last 24 months, all categories.

3robust · n=4418.2% of lots drew a single bid
Deadline → award
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How long this buyer takes to decide after bids close.

Middle value in days from deadline to first award notice, on this buyer’s own tenders.

Based on 31 decided tenders across all categories, last 24 months.

Last 24 months.

25 daysrobust · n=31
Notice amendments
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How often this buyer changes a notice after publishing it.

Middle number of amendments per notice. Deadline extensions and corrections both count.

Based on 60 notices across all categories, last 24 months.

Last 24 months.

146 of 60 notices amended
Award vs estimate
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Do this buyer’s awards land above or below its own estimates.

Each lot’s published estimate against its award, on this buyer’s competitions, like for like.

Based on 22 lots with both an estimate and an award, last 24 months.

A past pattern, not a price to bid.

Last 24 months.

15.2% below estimaterobust · n=22

Who wins here
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Which suppliers win the most here.

Suppliers ranked by the number of tenders won, not by money. A supplier on one big framework with many call-offs does not outrank one that won many separate competitions.

All published awards naming a supplier · ranked by distinct procedures, not pounds · panel and call-off entries inflate award records

SupplierProceduresShareLast 24mAward recordsLast activity
XDS OXFORD LIMITED89.5%8827 Aug 2026
FMB Feinwerk und Messtechnik GmbH56%5511 Mar 2026
Instrument Design Technology Ltd56%552 Sept 2026
Kyma S.p.A.56%4517 Jul 2026
Danfysik A/S56%3513 Mar 2026
NCF Engineering Ltd T/A Ferrositiframework/DPS on 144.8%3414 Sept 2026
Bestec GmbH33.6%2329 Apr 2026
SCANDITRONIX MAGNET AB22.4%2212 May 2026

The three most frequent suppliers are named on 21% of 84 awarded procedures (each procedure counted once, so a panel shared by several of them is not double-counted); 59 distinct suppliers hold at least one. Descriptive concentration of published awards, not a statement of preference.

Published award value (24m)
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How much this buyer has awarded recently, by published values.

Sum of published VAT-exclusive awards to single suppliers, last 24 months. Left out: concession revenue, framework ceilings, repeated notices, equal-value duplicates.

Published values, not actual spend. The biggest rows are listed so you can check.

£21mSum of published VAT-exclusive values on 39 of 39 published single-supplier values; the five largest make 32%.
Typical single-supplier award (24m)
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The middle published award value for this buyer.

Middle value of the same awards as the total above.

Last 24 months.

£385k middle valuerobust · n=39Middle half £276k–£743k.
Largest published awards
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The biggest published awards.

Awards to a single supplier with a published value, largest first, so you can check the totals against the notice.

A repeated framework total can appear here. Open the notice to check.

SupplierAwardedTermPublished value
9003984 - APPLE-II Undulators for the Diamond-II Beamlines I06 and I10Kyma S.p.A.25 Feb 20261.5 yrs£1,430,000
≈ £953k/yr
90011507 - Supply of Storage Ring GirdersDal Ben S.p.A——£1,425,280 †
9003377 - Off-Site Storage Facility for DLSCannon Packing & Logistics——£1,422,419 †
9002141 - B07/K07 Double Mirror System and K24 Single Mirror SystemIRELEC23 Jul 20252.1 yrs£1,221,500
≈ £586k/yr
9003983 - APPLE-II Undulator for the Diamond-II Beamline I08Kyma S.p.A.25 Feb 20261.4 yrs£1,130,000
≈ £798k/yr

Contracts ending
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Contracts that finish in the next 18 months.

Published contracts with an end date in that window. No end date, not counted.

An end date does not confirm a new procurement.

Published end dates only · 47 of 92 contracts carry one · not a retender forecast

Soonest 10 of 29 contracts ending within 18 months.

Recent procedures

Latest 50 of 107 procedures where this authority buys, is the authority the work is for, or runs the procurement

ProcedureStatusPublishedPublished value
9003532 - Supply of KB Mirror System for K21MirrorsAwarded / complete13 Feb 2026£350,000
90035432 - Supply of Double Toroidal Focussing Mirror System(M2) for Beamline K18MirrorsAwarded / complete12 Feb 2026£320,000
DLSITT1048 - Off-Site Storage Facility for DLSStorage and warehousing servicesAwarded / complete9 Jan 2026—
9003417 - Supply of Primary Electron Beam Position Monitor SupportsMiscellaneous fabricated products and related itemsAwarded / complete8 Jan 2026£500,000
9003203 - Supply of K14 SWIFT Beamline M1 and M2 Mirror SystemsMirrorsAwarded / complete8 Jan 2026£500,000
9002998 - Supply of Standard PEBPM Belllows AssemblyElectron-beam recordersAwarded / complete8 Jan 2026£900,000
8053902 - Supply of XRF Microscope for Beamline I18Fluorescent microscopesAwarded / complete7 Jan 2026£350,000
9003224 - Supply of I17 CSXID White Beam SlitsMiscellaneous general and special-purpose machineryAwarded / complete7 Jan 2026£200,000
9002631 - Supply of a Fizeau Interferometer for Diamond Light SourceSpecialist optical instrumentsAwarded / complete17 Oct 2025£270,000
9002558 - Supply of I17 Front End for Diamond-IIMiscellaneous special-purpose machineryAwarded / complete10 Oct 2025£450,000
9002451 - Supply of Double Crystal Monochromator for I15 Extreme Conditions BeamlineX-ray devicesAwarded / complete2 Oct 2025£400,000
9002503 - Supply of Group E2 Girder Vacuum Vessel Secondary Photon and Beam Port Absorber AssembliesPressure vesselsAwarded / complete30 Sept 2025£500,000
9002513 - Supply of Horizontal and Vertical Collimator AssembliesPressure vesselsAwarded / complete29 Sept 2025£300,000
9001808 - Supply of Residual Gas Analysers for Diamond-IIAnalysersAwarded / complete28 Aug 2025—
9002215 - Supply of I17 CSXID M1, M3 and M5 Mirror OpticsMirrorsAwarded / complete14 Aug 2025£400,000
9002141 - Supply of B07 / K07 Double Mirror System and B24 Single Mirror SystemMirrorsAwarded / complete8 Aug 2025£600,000
849316 - Computer Controlled Optical Surfacing MachineLaboratoryAwarded / complete5 Aug 2025£200,000
9001983 - Supply of I17 CSXID Beamline Plane Grating MonochromatorRadioAwarded / complete8 Jul 2025£400,000
9001907 - Supply of Fast Corrector Magnets for D-II Storage RingMagnetsAwarded / complete10 Jun 2025£450,000
9001858 - Supply of Magnet Base Plates for Diamond-IIMiscellaneous fabricated products and related itemsAwarded / complete10 Jun 2025£2,500,000

Search all 107 procedures for this authority →

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.
  • One profile per authority. Different spellings and registration numbers of the same body are merged into this profile. It includes tenders the authority ran for other bodies and tenders run on its behalf; spend is credited to the body that pays.
  • Values are published values. Award values are what the authority published, excluding VAT and framework ceilings. They are not a budget or total spend.
  • Contract end dates. 47 of 92 published contracts state an end date; those feed “Contracts ending”.
  • 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.