UNITED KINGDOM NATIONAL NUCLEAR LABORATORY LIMITED
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Cash
£30M
highest in 3 filed years
Net assets
£89M
highest in 3 filed years
Employees
1,590
highest in 3 filed years
Profit before tax
-£14M
Period ending 2025-09-30
Watchouts
Facts from the Companies House register and the latest accounts — not a rating
-
4 officer resignations in last 12 months
Multiple officers have left the board recently — see the People section for who.
Net assets
3-year trend · vs Industrials median
Accounts
3-year trend · Δ = latest vs prior filed period · latest reflected 2025-09-30
| Metric | Trend | 2023-03-31 | 2024-03-31 | 2025-09-30 | Δ vs prior |
|---|---|---|---|---|---|
| Turnover | £128,627,000 | £148,964,000 | £264,835,000 | — | |
| Operating profit | -£15,865,000 | -£15,624,000 | -£13,268,000 | — | |
| Profit before tax | -£13,435,000 | -£16,591,000 | -£13,618,000 | — | |
| Net profit | -£3,471,000 | -£6,013,000 | £3,550,000 | — | |
| Cash | £29,785,000 | £22,079,000 | £29,877,000 | — | |
| Total assets less current liabilities | £172,516,000 | £177,653,000 | £220,007,000 | — | |
| Net assets | £82,545,000 | £75,207,000 | £89,233,000 | — | |
| Equity | £82,545,000 | £75,207,000 | £89,233,000 | — | |
| Average employees | 1,430 | 1,509 | 1,590 | — | |
| Wages | £90,175,000 | £99,938,000 | £155,210,000 | — | |
| Directors' remuneration | £1,232,000 | £925,000 | £1,146,000 | — |
Values shown as filed in the company's annual accounts. — indicates the figure wasn't present under that line item in that period. The Δ column is the change from the prior filed period as a percentage of |prior|; lines a company doesn't report show —. Year-on-year comparison hidden: this filing covers about 18 months versus 12 months prior. About these numbers
Ratios
Computed from the line items above — sparklines read oldest → newest
| Ratio | Trend | 2023-03-31 | 2024-03-31 | 2025-09-30 |
|---|---|---|---|---|
| Operating margin | -12.3% | -10.5% | -5.0% | |
| Net margin | -2.7% | -4.0% | 1.3% | |
| Return on capital employed | -9.2% | -8.8% | -6.0% | |
| Gearing (liabilities / total assets) | 62.8% | 68.2% | 67.4% | |
| Current ratio | 1.74x | 1.52x | 1.66x | |
| Interest cover | — | -11.27x | -10.57x |
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.
Name history
Renamed 3 times since incorporation — the current trading name was adopted 2024-12-17
- UNITED KINGDOM NATIONAL NUCLEAR LABORATORY LIMITED 2024-12-17 → present
- NATIONAL NUCLEAR LABORATORY LIMITED 2008-11-10 → 2024-12-17
- NEXIA SOLUTIONS LIMITED 2004-11-08 → 2008-11-10
- UNITED NUCLEAR TECHNOLOGIES LIMITED 1999-10-07 → 2004-11-08
Audit & accounting basis
- Accounting basis
- IFRS
- Reporting scope
- Standalone (parent only)
- Auditor
- Saffery LLP
- Audit opinion
- Unqualified (clean)
- Going concern
- Affirmed
“Based on the work we have performed, we have not identified any material uncertainties relating to events or conditions that, individually or collectively, may cast significant doubt on the company's ability to continue as a going concern for a period of at least twelve months from when the financial statements are authorised for issue.”
Group structure
- UNITED KINGDOM NATIONAL NUCLEAR LABORATORY LIMITED · parent
- Nexia Solutions Limited 100%
Significant events
- “In January 2026, the Company announced a voluntary redundancy programme as part of a strategic restructuring initiative. As at the date of authorisation of these financial statements, the process remains ongoing and is expected to conclude in May 2026.”
Auditor, going-concern and subsidiary information is drawn from the narrative of the latest annual accounts. About these numbers
People
8 active · 41 resigned
| Name | Role | Appointed | Born | Nationality |
|---|---|---|---|---|
| WHEELER, Samantha | Secretary | 2023-09-18 | — | — |
| ANTROBUS, Julianne | Director | 2025-04-01 | Jan 1974 | British |
| CLARKE, Mandy Dawn | Director | 2026-04-29 | Sep 1965 | British |
| CLARKSON, Iain Geoffrey | Director | 2019-10-01 | Feb 1967 | British |
| GRAY, Hannah Brewer | Director | 2025-10-21 | Jan 1976 | British |
| SCOTT, David Douglas | Director | 2026-01-23 | Jan 1967 | British |
| SMART, Neil Graham, Professor | Director | 2025-04-01 | Feb 1964 | British |
| TENNER, Brian Thomas | Director | 2026-04-29 | Jun 1968 | British,Irish |
Show 41 resigned officers
| Name | Role | Appointed | Resigned |
|---|---|---|---|
| DUKES, David Barry | Secretary | 2013-03-25 | 2023-09-18 |
| EDWARDS, John Frederick | Secretary | 2005-03-14 | 2005-03-24 |
| ELSDEN, Andrew David | Secretary | 2009-09-11 | 2013-03-25 |
| QUINT, Susan | Secretary | 2009-02-01 | 2009-09-07 |
| REID, Colin Stuart | Secretary | 2007-11-01 | 2009-02-01 |
| REID, Colin Stuart | Secretary | 1999-10-07 | 2005-03-14 |
| SHUTTLEWORTH, Alvin Joseph | Secretary | 2005-03-14 | 2007-11-01 |
| ATHERTON, Jilly-Ann | Director | 2014-10-22 | 2017-08-16 |
| BARLOW, Clare Marie | Director | 2018-10-16 | 2025-03-31 |
| BEACHAM, David John | Director | 2016-12-14 | 2023-05-03 |
| BLEASDALE, Peter Anthony | Director | 2005-04-01 | 2009-04-03 |
| CORMACK, Ann Catherine | Director | 2023-04-21 | 2026-04-20 |
| DUNPHY, Ruth Marie | Director | 2015-11-16 | 2019-03-19 |
| EDWARDS, John Frederick | Director | 2005-03-14 | 2008-06-30 |
| ELSDEN, Andrew David | Director | 2005-04-01 | 2009-04-03 |
| EMERSON, Edward Horatio | Director | 2021-10-19 | 2025-10-17 |
| FLINT, Claire Louise | Director | 2017-04-24 | 2023-04-21 |
| FUNNELL, Ian Grant | Director | 2022-01-26 | 2025-12-31 |
| GARWOOD, Stephen John, Doctor | Director | 2020-05-19 | 2025-03-31 |
| HEALEY, David Charles | Director | 2009-04-03 | 2015-07-07 |
| HOWARTH, Paul John Arton, Dr | Director | 2009-04-03 | 2025-03-31 |
| JEE, Susan | Director | 2008-07-22 | 2009-09-07 |
| JONES, Peter Nicholas | Director | 2009-09-07 | 2014-07-31 |
| LANAGHAN, John Malcolm | Director | 2014-08-12 | 2019-09-30 |
| LAWRENCE, Michael | Director | 2009-04-03 | 2011-01-01 |
| LESTER, Craig Douglas | Director | 2014-03-18 | 2016-01-28 |
| MATHEWS, Andrew David Hugh, Sir | Director | 2014-08-05 | 2022-01-25 |
| MAUDSLAY, Richard Henry | Director | 2009-06-30 | 2015-12-17 |
| MAYOR, Amanda Jean | Director | 2005-04-01 | 2009-04-03 |
| MILLER, Matthew Stephen | Director | 2019-12-19 | 2025-07-30 |
| PARKER, Michael David | Director | 2005-04-01 | 2009-04-03 |
| PAYTON, Anna Charlotte | Director | 2018-05-16 | 2021-10-19 |
| QUINT, Susan | Director | 2007-11-01 | 2009-09-07 |
| RAMSAY, Richard Alexander Mcgregor | Director | 2009-04-03 | 2009-06-30 |
| RAYMENT, Fiona Elizabeth, Dr | Director | 2020-07-01 | 2023-10-31 |
| SHARP, Jason | Director | 2005-04-01 | 2009-04-03 |
| SHERRY, Andrew Hamilton, Professor | Director | 2016-01-01 | 2020-06-30 |
| SHUTTLEWORTH, Alvin Joseph | Director | 1999-10-07 | 2007-11-01 |
| SMALE, Ian Michael | Director | 2009-09-07 | 2013-12-31 |
| WALKER, Jonathan Peter, Hon | Director | 2016-01-28 | 2018-04-20 |
| WEIGHTMAN, Michael William, Dr | Director | 2014-08-05 | 2020-05-31 |
Ownership
Persons with significant control
| Name | Kind | Nature of control | Notified | Status |
|---|---|---|---|---|
| Nnl Holdings Limited | Corporate entity | Shares 75–100%, Voting 75–100%, Appoints directors | 2016-04-06 | Active |
Filing timeline
Last 20 of 176 total filings
Material constitutional events — rename, articles re-file, resolution
- 2025-04-03 RESOLUTIONS Resolution
- 2025-04-03 MA Memorandum articles
| Date | Type | Category | Description | |
|---|---|---|---|---|
| 2026-06-20 | AA | accounts | Accounts with accounts type full | |
| 2026-05-11 | AP01 | officers | Appoint person director company with name date | |
| 2026-05-08 | AP01 | officers | Appoint person director company with name date | |
| 2026-04-21 | TM01 | officers | Termination director company with name termination date | |
| 2026-04-14 | SH01 | capital | Capital allotment shares | |
| 2026-02-16 | AP01 | officers | Appoint person director company with name date | |
| 2026-01-05 | TM01 | officers | Termination director company with name termination date | |
| 2025-10-23 | AP01 | officers | Appoint person director company with name date | |
| 2025-10-23 | TM01 | officers | Termination director company with name termination date | |
| 2025-10-16 | CS01 | confirmation-statement | Confirmation statement with updates | |
| 2025-09-04 | AA01 | accounts | Change account reference date company current extended | |
| 2025-07-30 | TM01 | officers | Termination director company with name termination date | |
| 2025-04-03 | RESOLUTIONS | resolution | Resolution | |
| 2025-04-03 | MA | incorporation | Memorandum articles | |
| 2025-04-01 | AP01 | officers | Appoint person director company with name date | |
| 2025-04-01 | AP01 | officers | Appoint person director company with name date | |
| 2025-04-01 | TM01 | officers | Termination director company with name termination date | |
| 2025-04-01 | TM01 | officers | Termination director company with name termination date | |
| 2025-04-01 | TM01 | officers | Termination director company with name termination date | |
| 2025-03-28 | SH01 | capital | Capital allotment shares |
Public-record activity
Raw counts from Companies House — last 12–24 months
- Filings
- 12
- Capital events
- 2
- Officers appointed
- 4
- Officers resigned
- 4
last 12 months
last 24 months
last 12 months
last 12 months
Direct counts from the register. No score, no rating — see the Filing timeline for the underlying events.