DIAMOND LIGHT SOURCE LIMITED, OX11 0DE : Companies House Number 04375679

Executive summary

Diamond Light Source Limited exhibits excellent structural and compliance health, operating as a stable, mature research entity with a highly credentialed board and no signs of administrative distress. While the qualitative indicators are robust, a definitive financial health score requires a review of the company's full balance sheet to assess working capital and funding reserves. Overall, the prognosis is highly stable, with the primary recommendation being to verify the sufficiency of long-term grant funding against operational costs.

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Overview

Company type: Private Limited Company
Incorporated: 2002-02-18
Registered office: Diamond House, Harwell Science And Innovation Campus, Didcot, Oxfordshire, England, OX11 0DE
Postcode: OX11 0DE
Capital: 693 GBP
Accounts category: Full

Accounts

Last made up to: 2026-03-31
Next due by: 2027-12-31
Financial year end: 31 March

Confirmation statement

Last statement dated: 2026-05-01
Next due by: 2027-05-15

View filing history →

Nature of business (SIC)

72190 Other research and experimental development on natural sciences and engineering

Officers 9 current · 39 resigned

Petra Claire Farquhar, Dr OYSTON Director

Appointed 2025-10-01

Roger Soulsby, Professor ECCLESTON Director

Appointed 2025-04-01

Sean Michael, Dr HIRD Secretary

Appointed 2024-12-31

Victoria Louise GRANT Director

Appointed 2024-06-28

Gianluigi Andrea, Dr BOTTON Director

Appointed 2023-10-12

View all officers and resignations →

Public contracts won 2

£48,000 total awarded value where published.

GSS24834 - Project Management Fees

UK SHARED BUSINESS SERVICES LIMITED 2024-11-21 £24,000
Costs for IAM Project Management Contractor

UK SHARED BUSINESS SERVICES LIMITED 2024-11-04 £24,000

Contains public sector information licensed under the Open Government Licence v3.0 (Contracts Finder).

Licensed visa sponsor

Licensed by the Home Office to sponsor worker visas: Government Authorised Exchange (Temporary Worker (A rating)), Skilled Worker (Worker (A rating)).

Matched by registered name to the register of licensed sponsors (Home Office, updated daily) — check the register itself before relying on it. Contains public sector information licensed under the Open Government Licence v3.0.

Modern slavery statement

Registered a modern slavery statement for 2025 (period to 2025-03-31) — 6 years on the registry.

Read the statement summary on the government modern slavery statement registry. Contains public sector information licensed under the Open Government Licence v3.0.

Gender pay gap

10.44%

Women's median hourly pay below men's, 2025/26 · around the middle of the pack for parity

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Contact details

Website: http://www.diamondlightsource.co.uk

Previous company names

Name	Date changed
CODENOTE LIMITED	2002-03-26

Previous registered addresses 4

Address	Changed on
DIAMOND HOUSE, CHILTON, DIDCOT, OXFORDSHIRE OX11 0DE	2007-06-04
RUTHERFORD APPLETON LABORATORY, CHILTON, DIDCOT, OXFORDSHIRE OX11 0QX	2005-06-21
120 EAST ROAD, LONDON, N1 6AA	2002-03-21
0 EAST ROAD, LONDON, N1 6AA	2002-03-21

Among its peers

Among the oldest 25%

of 211 similar companies in OX, trading since 2002

The class of 2002

34%

of the 221 companies in this sector incorporated in 2002 are still active today; 64% have since been dissolved.

A fact about the year, not a forecast for this company.

Property in England & Wales 2 titles

Leasehold: 2
Most recent registration: 2010-04-12
Where: Oxfordshire (2)

Title number	County	Tenure	Registered	Price paid
ON291000	Oxfordshire	Leasehold	2010-04-12	—
ON290144	Oxfordshire	Leasehold	2010-02-09	—

For addresses and the authoritative register entry, use HM Land Registry's official search (£3 per title).