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Next accounts due

2026-06-30 (in 1mo)

Last filed for 2024-03-31

Confirmation statement due

2027-04-08 (in 11mo)

Last made up 2026-03-25

Watchouts

None on the register

Cash

£43M

-15.2% vs 2023

Net assets

£96M

-7.1% vs 2023

Employees

1,509

+5.5% vs 2023

Profit before tax

-£17M

-23.5% vs 2023

Accounts

2-year trend · latest reflected 2024-03-31

Metric Trend 2023-03-312024-03-31
Turnover £128,627,000£148,964,000
Operating profit -£15,863,000-£15,624,000
Profit before tax -£13,434,000-£16,592,000
Net profit -£3,470,000-£6,014,000
Cash £50,743,000£43,036,000
Total assets less current liabilities £193,268,000£198,405,000
Net assets £103,297,000£95,959,000
Equity £103,297,000£95,959,000
Average employees 1,4301,509
Wages £90,175,000£102,568,000

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 2023-03-312024-03-31
Operating margin -12.3%-10.5%
Net margin -2.7%-4.0%
Return on capital employed -8.2%-7.9%
Gearing (liabilities / total assets) 57.4%62.7%
Current ratio 2.29x1.97x
Interest cover -131.10x-11.26x

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
IFRS
Reporting scope
Consolidated group
Auditor
Saffery LLP
Audit opinion
Unqualified (clean)
Going concern
Affirmed

“Based on the detailed cash flow forecasts prepared by management, which included any reasonably possible change in key assumptions on which the cash flow forecasts themselves were based, the directors continue to believe that there is a reasonable expectation that the NNL Group has adequate resources to continue to adopt the going concern basis in preparing these financial statements.”

Group structure

  1. NNL HOLDINGS LIMITED · parent
    1. National Nuclear Laboratory Limited 100% · United Kingdom
    2. Nexia Solutions Limited 100% · United Kingdom · dormant

Significant events

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

People

3 active · 16 resigned

Name Role Appointed Born Nationality
WHEELER, Samantha Secretary 2023-09-18
HASTIE-OLDLAND, Mark Director 2023-03-31 Dec 1983 British
HEFFER, Christopher Charles Director 2025-10-16 Nov 1972 British
Show 16 resigned officers
Name Role Appointed Resigned
DUKES, David Barry Secretary 2013-05-07 2023-09-18
ELSDEN, Andrew David Secretary 2010-01-04 2013-05-07
WHEELER, Stephen David Secretary 2009-03-25 2010-01-05
DE SOUZA, Stephen William Director 2011-07-01 2013-03-29
DUNPHY, Ruth Marie Director 2018-04-11 2019-03-19
EMERSON, Edward Horatio Director 2021-10-19 2025-10-16
JAMIESON, Lindsay Helen Director 2022-01-28 2023-03-31
KEENAGHAN-CLARK, Elizabeth Anna Director 2013-07-16 2015-03-13
LACEY, Derek John Director 2009-03-25 2010-02-23
LESTER, Craig Douglas Director 2017-09-29 2021-12-15
LESTER, Craig Douglas Director 2011-05-26 2016-01-28
PAYTON, Anna Charlotte Director 2018-05-16 2021-10-19
RAMSAY, Richard Alexander Mcgregor Director 2009-03-25 2011-07-01
SENIOR, David Michael Director 2010-05-19 2011-07-01
WALKER, Jonathan Peter, Hon Director 2016-01-28 2018-04-20
YATES, Thomas Henry Benedick Director 2016-01-28 2017-01-27

Ownership

Persons with significant control

Name Kind Nature of control Notified Status
Secretary Of State For Department Of Energy Security And Net Zero Legal person Shares 75–100%, Voting 75–100%, Appoints directors 2023-05-03 Active
Office For The Secretary Of State For Business, Energy And Industrial Strategy Corporate entity Shares 75–100%, Voting 75–100%, Appoints directors 2016-07-14 Ceased 2023-05-03

Filing timeline

Last 20 of 74 total filings

Material constitutional events — rename, articles re-file, resolution

  • 2025-04-09 MA Memorandum articles
  • 2025-04-03 RESOLUTIONS Resolution
Date Type Category Description
2026-03-31 SH01 capital Capital allotment shares PDF
2026-03-31 CS01 confirmation-statement Confirmation statement with updates PDF
2025-10-16 AP01 officers Appoint person director company with name date PDF
2025-10-16 TM01 officers Termination director company with name termination date PDF
2025-09-04 AA01 accounts Change account reference date company current extended PDF
2025-06-10 RP04CS01 confirmation-statement Second filing of confirmation statement with made up date PDF
2025-06-04 CS01 confirmation-statement Confirmation statement with updates
2025-04-09 MA incorporation Memorandum articles
2025-04-03 RESOLUTIONS resolution Resolution
2025-03-28 SH01 capital Capital allotment shares PDF
2024-08-28 AA accounts Accounts with accounts type group
2024-03-25 CS01 confirmation-statement Confirmation statement with updates PDF
2023-09-29 AA accounts Accounts with accounts type group
2023-09-18 TM02 officers Termination secretary company with name termination date PDF
2023-09-18 AP03 officers Appoint person secretary company with name date PDF
2023-06-08 PSC03 persons-with-significant-control Notification of a person with significant control PDF
2023-06-08 PSC07 persons-with-significant-control Cessation of a person with significant control PDF
2023-04-03 CS01 confirmation-statement Confirmation statement with no updates PDF
2023-04-03 AP01 officers Appoint person director company with name date PDF
2023-04-03 TM01 officers Termination director company with name termination date PDF

Public-record activity

Raw counts from Companies House — last 12–24 months

Filings
7

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.

Year-on-year

FY2023 → FY2024 · period ending 2024-03-31 vs 2023-03-31

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

Official Companies House page