NATIONAL NUCLEAR CORPORATION LIMITED
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Next accounts due
2026-06-30 (in 1mo)
Last filed for 2024-09-27
Confirmation statement due
2026-08-17 (in 3mo)
Last made up 2025-08-03
Watchouts
Cash
—
Latest balance sheet
Net assets
£228K
+486.4% vs 2023
Employees
—
Average over period
Profit before tax
-£1K
+99.5% vs 2023
Watchouts
Facts from the Companies House register and the latest accounts — not a rating
-
Material uncertainty over going concern
The Company has not entered into any new contracts for several years and there are no current plans for the Company to enter into any further contracts. The Company's remaining contractual obligations were completed in December 2020 and as such the accounts have been prepared on a basis other than going concern.
-
1 PSC ceased in last 24 months
Significant control changed hands — see the Ownership section.
Name history
Renamed 2 times since incorporation
- NATIONAL NUCLEAR CORPORATION LIMITED 1989-04-01 → present
- NNC LIMITED 1989-02-27 → 1989-04-01
- DASHBULGE LIMITED 1988-08-30 → 1989-02-27
Net assets
3-year trend · vs Industrials median
Accounts
3-year trend · latest reflected 2024-09-27
| Metric | Trend | 2022-09-30 | 2023-09-29 | 2024-09-27 |
|---|---|---|---|---|
| Turnover | — | — | — | |
| Operating profit | — | -£190,000 | £1,000 | |
| Profit before tax | — | -£194,000 | -£1,000 | |
| Net profit | — | -£193,000 | -£1,000 | |
| Cash | — | — | — | |
| Total assets less current liabilities | — | -£59,000 | £228,000 | |
| Net assets | — | -£59,000 | £228,000 | |
| Equity | £3,583,000 | -£59,000 | £228,000 | |
| Average employees | — | — | — | |
| Wages | — | — | — |
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
Ratios
Computed from the line items above — sparklines read oldest → newest
| Ratio | Trend | 2022-09-30 | 2023-09-29 | 2024-09-27 |
|---|---|---|---|---|
| Return on capital employed | — | 322.0% | 0.4% | |
| Current ratio | — | 0.77x | 8.35x | |
| Interest cover | — | -31.67x | 0.50x |
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.
Audit & accounting basis
- Accounting basis
- FRS 101
- Reporting scope
- Standalone (parent only)
- Auditor
- Ernst & Young LLP
- Audit opinion
- Unqualified (clean)
- Going concern
- Material uncertainty disclosed
“The Company has not entered into any new contracts for several years and there are no current plans for the Company to enter into any further contracts. The Company's remaining contractual obligations were completed in December 2020 and as such the accounts have been prepared on a basis other than going concern.”
Significant events
- “On 12 June 2024, Jacobs UK Limited transferred its entire investment in the Company to Energy, Security and Technology UK Limited. As a result, Energy, Security and Technology UK Limited became the new immediate parent company.”
- “On 27 September 2024, following the execution of a series of legal steps and contractual arrangements, including the spin-off and merger of the CMS business with Amentum, Amentum Holdings, Inc. became the ultimate parent of the Company.”
Auditor, going-concern and subsidiary information is drawn from the narrative of the latest annual accounts. About these numbers
People
3 active · 36 resigned
| Name | Role | Appointed | Born | Nationality |
|---|---|---|---|---|
| PRENTICE, Joshua David | Secretary | 2024-06-01 | — | — |
| JONES, Loren Michael | Director | 2026-03-25 | Mar 1984 | British |
| SHAW, Martin Warwick | Director | 2026-03-25 | Sep 1967 | British |
Show 36 resigned officers
| Name | Role | Appointed | Resigned |
|---|---|---|---|
| ASHMAN, Fraser Lionel | Secretary | — | 1991-12-31 |
| CHAUDHARY, Tejender Singh, Mr | Secretary | 2020-06-26 | 2023-02-10 |
| DON CAROLIS, Frazer Anthony | Secretary | 1992-01-01 | 2006-04-01 |
| FELLOWES, Colin | Secretary | 2006-04-01 | 2009-06-16 |
| FIDLER, Christopher Laskey | Secretary | 2009-06-16 | 2016-07-22 |
| HOLMAN, Rhona Mary | Secretary | 2023-02-10 | 2023-08-21 |
| JONES, Iain Angus | Secretary | 2019-04-23 | 2020-03-06 |
| ROBERTS, Geoffrey | Secretary | 2023-08-21 | 2024-06-01 |
| THOMAS, Anthony Mark | Secretary | 2018-02-16 | 2019-03-08 |
| WARBURTON, Jennifer Ann | Secretary | 2016-07-22 | 2018-02-16 |
| ASHMAN, Fraser Lionel | Director | — | 1999-06-30 |
| BOATH, David Hunter | Director | 2014-03-31 | 2022-03-31 |
| BOATH, David Hunter | Director | 2003-03-14 | 2009-03-02 |
| CLARKSON, Iain Geoffrey | Director | 2008-02-01 | 2009-03-02 |
| COAKER, Tristan | Director | 2009-03-02 | 2011-09-16 |
| DURSTON, John Graham | Director | 1994-04-30 | 1998-05-11 |
| EDWARDS, Sion Erwyd | Director | 2019-08-12 | 2026-03-26 |
| HIGTON, Peter Desmond | Director | 1999-09-06 | 2007-03-09 |
| INGHAM, Eric Leslie | Director | 1999-09-06 | 2003-12-31 |
| INNS, Terry Peter Frank | Director | 2015-05-18 | 2016-11-30 |
| ISLES, Rachael | Director | 2014-03-31 | 2016-01-21 |
| KERSHAW, Paul Richard | Director | 1998-05-11 | 2005-01-27 |
| LANIGAN, Philip Nicholas | Director | 1999-11-01 | 2005-09-30 |
| LLAMBIAS, John Manuel, Dr | Director | 2004-01-01 | 2004-06-14 |
| LYONS, Ellen | Director | 2016-01-21 | 2026-03-26 |
| MARLOR, John Stanley | Director | 1994-07-15 | 1999-09-06 |
| O'KEEFFE, Nicola Jayne | Director | 2011-09-16 | 2014-03-31 |
| ROUTLEDGE, Kevin Timothy | Director | 1999-09-06 | 2003-03-14 |
| SADLER, Steve | Director | 2005-01-01 | 2008-01-31 |
| SMITH, Kevin | Director | 2007-05-21 | 2009-03-02 |
| TAYLOR, Derek | Director | — | 1994-04-30 |
| THOMAS, Anthony Mark | Director | 2010-11-12 | 2014-03-31 |
| TRAWBER, John Joseph | Director | 1999-09-06 | 2003-03-14 |
| WARE, Fiona Elizabeth | Director | 2009-03-02 | 2010-06-18 |
| WILLETTS, Gregory William | Director | 2010-11-12 | 2014-03-31 |
| WOOD, Paul David | Director | 2016-11-30 | 2019-07-25 |
Ownership
Persons with significant control
| Name | Kind | Nature of control | Notified | Status |
|---|---|---|---|---|
| Energy, Security And Technology Uk Limited | Corporate entity | Shares 75–100%, Voting 75–100%, Appoints directors | 2024-06-12 | Active |
| Jacobs U.K. Limited | Corporate entity | Shares 75–100%, Voting 75–100%, Appoints directors | 2020-03-06 | Ceased 2024-06-12 |
| Amec Nuclear Overseas Limited | Corporate entity | Shares 75–100%, Voting 75–100%, Appoints directors | 2016-04-06 | Ceased 2020-03-06 |
Filing timeline
Last 20 of 200 total filings
| Date | Type | Category | Description | |
|---|---|---|---|---|
| 2026-03-26 | TM01 | officers | Termination director company with name termination date | |
| 2026-03-26 | TM01 | officers | Termination director company with name termination date | |
| 2026-03-26 | AP01 | officers | Appoint person director company with name date | |
| 2026-03-26 | AP01 | officers | Appoint person director company with name date | |
| 2026-03-13 | AA | accounts | Accounts with accounts type full | |
| 2025-12-19 | CH01 | officers | Change person director company with change date | |
| 2025-12-03 | DISS40 | gazette | Gazette filings brought up to date | |
| 2025-12-02 | GAZ1 | gazette | Gazette notice compulsory | |
| 2025-09-11 | CS01 | confirmation-statement | Confirmation statement with updates | |
| 2024-11-11 | AD01 | address | Change registered office address company with date old address new address | |
| 2024-09-30 | PSC05 | persons-with-significant-control | Change to a person with significant control | |
| 2024-09-23 | AD01 | address | Change registered office address company with date old address new address | |
| 2024-08-19 | AA | accounts | Accounts with accounts type full | |
| 2024-08-06 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2024-07-03 | PSC02 | persons-with-significant-control | Notification of a person with significant control | |
| 2024-07-03 | PSC07 | persons-with-significant-control | Cessation of a person with significant control | |
| 2024-06-05 | TM02 | officers | Termination secretary company with name termination date | |
| 2024-06-03 | AP03 | officers | Appoint person secretary company with name date | |
| 2023-08-23 | AP03 | officers | Appoint person secretary company with name date | |
| 2023-08-22 | TM02 | officers | Termination secretary company with name termination date |
Public-record activity
Raw counts from Companies House — last 12–24 months
- Filings
- 9
- Capital events
- 0
- Officers appointed
- 2
- Officers resigned
- 2
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.
Year-on-year
FY2023 → FY2024 · period ending 2024-09-27 vs 2023-09-29
-
Turnover
—
Not reported
-
Cash
—
Not reported
-
Net assets
+486.4%
-£59,000 £228,000
-
Employees
—
Not reported
-
Operating profit
+100.5%
-£190,000 £1,000
-
Profit before tax
+99.5%
-£194,000 -£1,000
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