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Cash

£185K

+26.2% highest in 3 filed years

Net assets

£2M

+5.7% highest in 3 filed years

Employees

77

+6.9% highest in 3 filed years

Profit before tax

£448K

-57.4% vs 2024

Watchouts

Facts from the Companies House register and the latest accounts — not a rating

Accounts

5-year trend · Δ = latest vs prior filed period · latest reflected 2025-12-31

Metric Trend 2021-12-312022-12-312023-12-312024-12-312025-12-31 Δ vs prior
Turnover £10,969,089£11,786,183 +7.4%
Operating profit £1,168,226£650,178 -44.3%
Profit before tax £1,049,979£447,745 -57.4%
Net profit £780,705£105,496 -86.5%
Cash £51,233£146,548£184,981 +26.2%
Total assets less current liabilities £2,269,836£3,509,037£3,327,073 -5.2%
Net assets -£45,417£1,853,481£1,958,977 +5.7%
Equity £210,794£894,246£1,853,481£1,958,977 +5.7%
Average employees 27277 +6.9%
Wages £6,368,863£6,602,228 +3.7%
Directors' remuneration £503,425£526,333 +4.6%

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 . About these numbers

Ratios

Computed from the line items above — sparklines read oldest → newest

Ratio Trend 2021-12-312022-12-312023-12-312024-12-312025-12-31
Operating margin 10.7%5.5%
Net margin 7.1%0.9%
Return on capital employed 33.3%19.5%
Current ratio 2.10x2.04x
Interest cover 9.50x3.19x

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 102
Reporting scope
Standalone (parent only)
Auditor
RSM UK Audit 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 were authorised for issue.”

Group structure

  1. INTERRUPT LABS LIMITED · parent
    1. Interrupt Labs (Australia) Limited 100% · England · vulnerability research services
    2. Interrupt Labs (US) Limited 100% · England · dormancy
    3. Interrupt Labs US LLC 100% · United States of America · vulnerability research services
    4. Interrupt Labs Pty Ltd 100% · Australia · vulnerability research services

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

People

4 active · 2 resigned

Name Role Appointed Born Nationality
HEATH, Simon John Director 2021-12-22 Dec 1977 British
LAST, Andrew Director 2023-06-02 Jun 1981 British
LOUREIRO, James William Director 2021-11-01 Jul 1988 British
TAYLOR, Paul Director 2024-06-05 Aug 1962 British
Show 2 resigned officers
Name Role Appointed Resigned
CHOPPING, Alexander David Director 2021-11-01 2024-05-31
MESSENGER, Iain Ernest Bradley Director 2021-05-28 2023-04-03

Ownership

Persons with significant control

Name Kind Nature of control Notified Status
Irq Group Limited Corporate entity Shares 75–100%, Voting 75–100%, Appoints directors 2025-11-01 Active
Mr James William Loureiro Individual Significant influence 2024-10-23 Ceased 2025-11-01
Heligan Private Equity 1 Lp Corporate entity Significant influence 2022-07-22 Ceased 2025-11-01
Gpe Capital Partners Llp Corporate entity Shares 25–50%, Voting 25–50%, Appoints directors 2021-12-22 Ceased 2022-07-22
Mr Iain Ernest Bradley Messenger Individual Shares 75–100%, Appoints directors 2021-05-28 Ceased 2021-12-22

Filing timeline

Last 20 of 61 total filings

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

  • 2026-04-08 MA Memorandum articles
  • 2026-04-03 RESOLUTIONS Resolution
  • 2025-11-11 RESOLUTIONS Resolution
  • 2025-11-11 MA Memorandum articles
Date Type Category Description
2026-05-29 PSC07 persons-with-significant-control Cessation of a person with significant control PDF
2026-05-29 PSC07 persons-with-significant-control Cessation of a person with significant control PDF
2026-05-07 AA accounts Accounts with accounts type full PDF
2026-05-05 SH05 capital Capital cancellation treasury shares with date currency capital figure
2026-04-08 MA incorporation Memorandum articles
2026-04-03 RESOLUTIONS resolution Resolution
2026-04-01 SH08 capital Capital name of class of shares
2025-11-12 PSC04 persons-with-significant-control Change to a person with significant control PDF
2025-11-12 PSC05 persons-with-significant-control Change to a person with significant control PDF
2025-11-12 PSC02 persons-with-significant-control Notification of a person with significant control PDF
2025-11-11 RESOLUTIONS resolution Resolution
2025-11-11 MA incorporation Memorandum articles
2025-05-28 CS01 confirmation-statement Confirmation statement with updates PDF
2025-05-28 PSC01 persons-with-significant-control Notification of a person with significant control PDF
2025-04-09 AD01 address Change registered office address company with date old address new address PDF
2025-03-19 AA accounts Accounts with accounts type small PDF
2024-10-23 SH04 capital Capital sale or transfer treasury shares with date currency capital figure
2024-10-16 SH03 capital Capital return purchase own shares treasury capital date
2024-09-26 SH08 capital Capital name of class of shares
2024-08-06 MR01 mortgage Mortgage create with deed with charge number charge creation date PDF

Public-record activity

Raw counts from Companies House — last 12–24 months

Filings
12

last 12 months

Capital events
5

last 24 months

Officers appointed
0

last 12 months

Officers resigned
0

last 12 months

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

Official Companies House page