High-Growth Sector
Cybersecurity & Trust
A market overview of active UK companies in Cybersecurity & Trust. Figures exclude dormant and dissolved companies. Data refreshed 30 Apr 2026.
Active companies
3,656
trading & on register
Reporting turnover
421
12% of active
Reporting employees
3,190
87% of active
Register health
13%
of 4,276 on register are dormant
Company size (employees)
Active companies reporting employee counts
Turnover distribution
Active companies reporting turnover
Where they're based
Active companies by major UK city (30km London, 15–20km elsewhere)
New formations by year
Active companies incorporated under this category (dormant shells excluded)
Largest by turnover
| # | Company | Turnover | EBITDA | Employees | 3y growth |
|---|---|---|---|---|---|
| 1 | BYTES SOFTWARE SERVICES LIMITED | £1.2B | £52.5M | 696 | 17% |
| 2 | PALO ALTO NETWORKS (UK) LIMITED | £1.1B | £25.1M | 459 | 37% |
| 3 | SOFTCAT PLC | £962.6M | £160.7M | - | 7% |
| 4 | PA CONSULTING SERVICES LIMITED | £765.3M | £150.6M | - | 6% |
| 5 | SOPHOS LIMITED | £662.1M | £175.0M | 622 | 8% |
| 6 | MCAFEE SECURITY UK LTD | £634.1M | £11.2M | 1,301 | -12% |
| 7 | EXCLUSIVE NETWORKS LIMITED | £611.9M | £10.1M | 282 | 17% |
| 8 | DARKTRACE LIMITED | £549.2M | £35.6M | 2,411 | 39% |
| 9 | F5 NETWORKS LIMITED | £546.6M | £112.9M | 405 | 2% |
| 10 | DARKTRACE HOLDINGS LIMITED | £546.4M | £67.7M | 968 | 38% |
| 11 | KASPERSKY LABS LIMITED | £355.0M | £51.5M | 916 | -14% |
| 12 | GB GROUP PLC | £282.7M | £58.8M | 1,132 | 5% |
| 13 | MIMECAST SERVICES LIMITED | £247.1M | £11.4M | 631 | -2% |
| 14 | INFINIGATE GLOBAL SERVICES LIMITED | £245.2M | £1.3M | 45 | 9% |
| 15 | DARKTRACE MIDCO I LIMITED | £234.3M | £226.0M | 2,349 | - |
| 16 | CYBER-ARK SOFTWARE (UK) LIMITED | £234.1M | £1.9M | 166 | 28% |
| 17 | SNYK LIMITED | £222.3M | £113.9M | 1,086 | 78% |
| 18 | RAPID7 INTERNATIONAL LIMITED | £216.2M | £19.1M | 630 | 32% |
| 19 | TOTAL SECURITY LIMITED | £165.2M | £21.9M | 89 | 36% |
| 20 | CROWDSTRIKE UK LIMITED | £163.0M | £2.9M | 753 | 38% |
Fastest-growing
Active companies with turnover ≥ £1m, sorted by 3-year turnover CAGR
| # | Company | Turnover | Employees | 3y turnover growth |
|---|---|---|---|---|
| 1 | ZIVVER LIMITED | £2.4M | 17 | 433% |
| 2 | PROSEGUR SECURITY UK LIMITED | £1.3M | 3 | 237% |
| 3 | ARCEO, LTD | £7.3M | 26 | 198% |
| 4 | AIRBUS PROTECT LIMITED | £11.2M | 85 | 120% |
| 5 | MANAGED IT SERVICES GROUP LTD | £17.0M | 131 | 119% |
| 6 | 42 CRUNCH LTD | £1.8M | 32 | 108% |
| 7 | SNYK LIMITED | £222.3M | 1,086 | 78% |
| 8 | ISTARI INTERNATIONAL (UK) LIMITED | £3.8M | 7 | 69% |
| 9 | NOVENTIQ GROUP LTD | £6.6M | 17 | 67% |
| 10 | AQUA SECURITY SOFTWARE UK LTD | £5.2M | 37 | 65% |
| 11 | ANCHORE UK LIMITED | £1.8M | 11 | 65% |
| 12 | ZENZERO SOLUTIONS LIMITED | £31.7M | 228 | 63% |
| 13 | CALLSIGN LTD. | £21.1M | 60 | 59% |
| 14 | FORTER SOLUTIONS UK LTD | £23.9M | 71 | 54% |
| 15 | ITHQ HOLDINGS LTD | £5.0M | 19 | 51% |
| 16 | CHALEIT HOLDINGS LIMITED | £1.7M | 12 | 51% |
| 17 | BRIDEWELL GROUP HOLDINGS LIMITED | £38.6M | 268 | 50% |
| 18 | OBRELA HOLDCO LIMITED | £18.9M | 255 | 50% |
| 19 | LEXISNEXIS RISK SOLUTIONS UK LIMITED | £90.6M | 676 | 49% |
| 20 | TREND MICRO (UK) LIMITED | £44.5M | 96 | 48% |
Newest formations
Most recently incorporated active companies
| # | Company | Location | Incorporated |
|---|---|---|---|
| 1 | REDESIGN GROUP INTERNATIONAL LTD | Borehamwood | 2025 |
| 2 | CY2 GROUP LIMITED | Cheltenham | 2025 |
| 3 | SITS HOLDINGS LTD | London | 2025 |
| 4 | ASSURED DEFENCE & ASSESSED SECURITY LTD | Widnes | 2025 |
| 5 | VERACITY AI LTD | Leeds | 2025 |
| 6 | SOCURA HOLDINGS LIMITED | London | 2025 |
| 7 | RYBEC TECHNOLOGIES LTD | Hull | 2024 |
| 8 | NOMIOS UK&I HOLDING LIMITED | Basingstoke | 2024 |
| 9 | ADVANTEX SOLUTIONS LIMITED | Durham | 2024 |
| 10 | KORDIA LIMITED | Farnham | 2024 |
| 11 | ISTORAGE HOLDINGS LIMITED | London | 2024 |
| 12 | RED TAIL SOLUTIONS LTD | London | 2024 |
| 13 | DNA SECURITY SOLUTIONS LTD | Huntingdon | 2024 |
| 14 | MARKSMEN RESEARCH LTD | Woolwich | 2024 |
| 15 | EARTHID LTD | London | 2024 |
| 16 | OVERE LTD | Burton-On-Trent | 2024 |
| 17 | SECURITY BIT LTD | London | 2024 |
| 18 | ILLUMINATE TECHNOLOGIES UK LTD | London | 2024 |
| 19 | RED DOOR SOLUTIONS LTD | Harlow | 2024 |
| 20 | CHECK POINT CONVENIENCE STORE LTD | London | 2024 |