DIAMOND LIGHT SOURCE LIMITED

1. DIAMOND LIGHT SOURCE LIMITED 2002-03-26 → present
2. CODENOTE LIMITED 2002-02-18 → 2002-03-26

Values shown as filed in the company's annual accounts. — indicates the figure wasn't present under that line item in that period. About these numbers

Margins divide P&L lines by turnover. Gearing is liabilities over total assets. Current ratio is current assets over creditors falling due within one year. Interest cover is operating profit over absolute finance costs. Sector-distribution context coming next.

Accounting basis

IFRS

Reporting scope

Standalone (parent only)

Auditor

Grant Thornton UK LLP

Audit opinion

Unqualified (clean)

Going concern

Affirmed

“Management prepares a budget, mid-year forecast and 10-year plan annually, this is consistent with the business model of the Company, that it is reliant on ongoing funding from its shareholders to be a going concern. In addition, STFC (part of UKRI) as the principal shareholder has given assurance to the Directors expressing their continuing support for Diamond, for at least 12 months from the accounts being signed, which is subject to the financial allocation of funding from UKRI. Accordingly, the Directors are confident that Diamond is a going concern and therefore the financial statements have been prepared on that basis.”

Group structure

1. DIAMOND LIGHT SOURCE LIMITED · parent
   1. Quantum Detectors Ltd 10%

Significant events

• “Prof Sir Adrian Smith resigned on 7th December 2024 and Prof Sir Leszek Borysiewicz was appointed on the same date.”
• “Mrs Andrea Ward changed job title and responsibilities on 1st August 2024 from Director of Finance & Corporate Services to Chief Financial Officer / Deputy Chief Executive Officer, facilitating additional support to the Chief Executive Officer role.”
• “Dr Alan Partridge resigned on 31st March 2025 and Prof Roger Eccleston was appointed on 1st April 2025.”
• “Ms Victoria Grant was appointed as Non-Executive Director on 28th June 2024.”
• “Ms Linda Gregory resigned on 31st December 2024; Dr Sean Hird was appointed on 31st December 2024.”
• “construction of the new 5,000 m² Diamond Extension Building. The construction of this new space is substantially complete, with completion expected in July 2025.”

Auditor, going-concern and subsidiary information is drawn from the narrative of the latest annual accounts. About these numbers

Filings

9

last 12 months

Capital events

2

last 24 months

Officers appointed

1

last 12 months

Officers resigned

1

last 12 months

Direct counts from the register. No score, no rating — see the Filing timeline for the underlying events.

• Turnover

  +36.3%

  £120,457,319 → £164,128,679

• Cash

  +7.1%

  £22,762,238 → £24,371,961

• Net assets

  +15.8%

  £250,760,588 → £290,287,797

• Employees

  +4.9%

  824 → 864

• Operating profit

  +429.5%

  -£11,962,167 → £39,411,038

• Profit before tax

  +428.4%

  -£12,036,286 → £39,527,209

• Wages

  +6.2%

  £42,605,050 → £45,237,008

Each % is (latest − prior) ÷ |prior| for the line item as filed. The comparison is only shown when the latest and prior accounts cover broadly equal-length periods — short or long stubs (typical around incorporation or a year-end change) are suppressed rather than misrepresented. Lines a company doesn't report are omitted. About these numbers