Top security companies in the UK
| Company Name | Country | City | Address 1 | State/Province | Postal Code | Website | Founding Year | Yearly Revenue in U.S. Dollars | Employees Total | Business Legal Type - Description | Number of Companies in Group | Company Registration Number | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | G4s LIMITED | Unitedkingdom | Queen'S Park | 6th Floor | London | SW1H 0DB | g4s.***** | 2004 | $6,539,971,438 | 419,544 | Corporation | 823 | 04992207 |
| 2 | G4s Secure Solutions (UK) LIMITED | Unitedkingdom | Queen'S Park | 6th Floor | London | SW1H 0DB | g4s.***** | 1972 | $641,454,698 | 13,153 | Corporation | 823 | 01046019 |
| 3 | Wilson James LIMITED | Unitedkingdom | Westcliff-on-sea | Chalkwell Lawns | Southend-on-sea | SS0 9HR | wilsonjames.***** | 1988 | $484,396,892 | 6,173 | Corporation | 9 | 02269560 |
| 4 | G4s Facilities Management (UK) LIMITED | Unitedkingdom | Queen'S Park | 6th Floor | London | SW1H 0DB | g4s.***** | 1994 | $275,903,381 | 3,841 | Corporation | 823 | 03333860 |
| 5 | I.c.t.s. (U.K.) LIMITED | Unitedkingdom | Holborn | Entrance D Tavistock House | London | WC1H 9LG | icts.***** | 1987 | $256,225,681 | 4,717 | Corporation | 6 | 02143366 |
| 6 | T.S.S. (total Security Services) LIMITED | Unitedkingdom | Highams Park | The Curve | London | E4 9JG | totalsecurity.***** | 1989 | $248,928,376 | 7,379 | Corporation | 823 | 02426982 |
| 7 | Axis Security | Unitedkingdom | Little Town | G4a Genesis Centre, Garrett Field | Warrington | WA3 7BH | axis-security.***** | 2018 | $243,816,438 | 4,500 | N/A | N/A | |
| 8 | Cis Holdings LIMITED | Unitedkingdom | Hither Green | 418-426 Lewisham High Street | London | SE13 6LJ | cis-security.***** | 2005 | $223,205,067 | 3,343 | Corporation | 3 | 05430887 |
| 9 | Cis Security LTD | Unitedkingdom | Hither Green | 418-426 Lewisham High Street | London | SE13 6LJ | cis-security.***** | 1981 | $223,205,067 | 3,340 | Corporation | 3 | 01555444 |
| 10 | Ah UK PVT. LTD | Unitedkingdom | Castlefield | 378-380 Deansgate | Manchester, Greater Manchester | M3 4LY | N/A | 2022 | $198,956,351 | 3,226 | Corporation | 13 | 14218852 |
| 11 | Argenbright Security Europe LIMITED | Unitedkingdom | Muswell Hill | Greenside House | London | N22 7DE | asel.***** | 2021 | $198,956,351 | 3,226 | Corporation | 13 | 13249975 |
| 12 | Corps Security | Unitedkingdom | Finsbury | Market House | London | EC1M 6PF | corpssecurity.***** | 2011 | $180,207,439 | 3,326 | Proprietorship | N/A | N/A |
| 13 | Asel Integrated Security Solutions LTD | Unitedkingdom | Muswell Hill | Greenside House | London | N22 7DE | asel.***** | 2016 | $168,602,974 | 2,721 | Corporation | 13 | 10259434 |
| 14 | Solicitors Regulation Authority LIMITED | Unitedkingdom | Lodge Hill | The Cube | Birmingham, West Midlands | B1 1RN | sra.***** | 2020 | $166,714,239 | 783 | Corporation | N/A | 12608059 |
| 15 | Corps Security (UK) LIMITED | Unitedkingdom | Finsbury | Market House | London | EC1M 6PF | corpssecurity.***** | 1997 | $151,870,304 | 3,031 | Corporation | 18 | 03473589 |
| 16 | G4s Cash Solutions (UK) LIMITED | Unitedkingdom | Queen'S Park | 6th Floor, 50 Broadway | London | SW1H 0DB | g4s.***** | 1939 | $142,110,955 | 2,111 | Corporation | 823 | 00354883 |
| 17 | Carlisle Security Services LIMITED | Unitedkingdom | Luton | First Floor, 251 the Boulevard | Luton | LU1 3LU | N/A | 1991 | $140,270,281 | 4,053 | Corporation | 19 | 02654100 |
| 18 | Ea-Rs Fire Engineering Group LIMITED | Unitedkingdom | Witham | 4 Swanbridge Industrial Park | Essex | CM8 3YN | cotracer.***** | 2019 | $127,169,235 | 538 | Corporation | 26 | 13048877 |
| 19 | Securigroup Services LIMITED | Unitedkingdom | Glasgow | Floor 5 | Glasgow City | G2 4JR | securigroupsystems.***** | 2003 | $113,462,017 | 1,200 | Corporation | 13 | SC243826 |
| 20 | Trinity Fire And Security Systems LTD | Unitedkingdom | Clyst Saint Mary | Little Bridge Business Park | Devon | EX5 1AU | trinityfireandsecurity.***** | 1997 | $112,462,407 | 515 | Corporation | 48 | 03304503 |
| 21 | Orbis Protect LIMITED | Unitedkingdom | Uxbridge | Beaufort House | London | UB8 1QG | orbisprotect.***** | 1990 | $106,779,914 | 1,621 | Corporation | 36 | 02476859 |
| 22 | Amulet (churchill Security Solutions) LIMITED | Unitedkingdom | Luton | Cedar House Parkland Square | Luton | LU1 3LU | amulet.***** | 2010 | $105,763,315 | 1,669 | Corporation | 14 | 07317266 |
| 23 | Onfido LTD | Unitedkingdom | Monument-aldgate-fenchurch Street-tower Hill | 4th Floor | London | EC2M 4YF | entrust.***** | 2010 | $100,673,206 | 1,401 | Corporation | 62 | 07479524 |
| 24 | Marlowe Fire & Security LIMITED | Unitedkingdom | Dulwich | Level 12 the Shard | London | SE1 9SG | marlowefireandsecurity.***** | 2004 | $97,921,106 | 571 | Corporation | 56 | 05239777 |
| 25 | Loomis UK LIMITED | Unitedkingdom | Bestwood | The Lookout, 2nd Floor | Nottingham | NG7 2UL | work4loomisuk.***** | 1996 | $97,502,493 | 1,085 | Corporation | 696 | 03200432 |
Showing 25 of 25,286 companies
Request Free SampleUK security companies by region / province
Security companies in the UK by employee size
| Bracket | Companies | Share |
|---|---|---|
| 1-4 | 19,428 | |
| 5-9 | 2,871 | |
| 10-19 | 1,131 | |
| 20-49 | 701 | |
| 0 or Unknown | 535 | |
| 50-99 | 289 | |
| 100-199 | 170 | |
| 200-499 | 105 | |
| 500-999 | 28 | |
| 1.000-4.999 | 25 | |
| 5.000-9.999 | 2 | |
| 10.000+ | 1 |
Security companies in the UK by revenue
| Bracket | Companies | Share |
|---|---|---|
| 100.001 to 499.999 | 13,254 | |
| 1 to 100.000 | 7,631 | |
| 500.000 to 999.999 | 1,710 | |
| 1.000.000 to 4.999.999 | 1,593 | |
| 0 or Unknown | 585 | |
| 5.000.000 to 9.999.999 | 234 | |
| 10.000.000 to 49.999.999 | 223 | |
| 50.000.000 to 99.999.999 | 33 | |
| 100.000.000 to 499.999.999 | 21 | |
| 1.000.000.000 or more | 1 | |
| 500.000.000 to 999.999.999 | 1 |
About the UK security companies sector
The UK security companies market spans large national operators and local independents across England, Scotland, Wales and Northern Ireland. Together they make up the full list of security companies in the UK shown above, grouped under the Business Services category.
Looking for a list of security companies in the UK for outbound sales, an email list for marketing campaigns, or a mailing list for direct outreach? The list above is filterable by region, employee size, revenue band and founding year. Every active business is verified against the UK companies register. Export to CSV or Excel, or request a free sample to evaluate.
Closely related industries
UK security companies sit within the Business Services sector. The list above covers every active UK company in this sector, so the regional and revenue breakdowns reflect the full market rather than a sample. Explore closely related sectors below.
Frequently asked questions about security companies in the UK
The full list of UK security companies on this page covers every active business registered with Companies House. The live counter near the top shows the current total, updated continuously as new companies register and dormant ones are dissolved.
London is typically the largest concentration, followed by other major cities and counties. The full regional breakdown is shown in the table below the company list. Click any region to open a focused list of security companies in that area.
Yes. Use the form on this page to request a free sample or a full export. Files are delivered as CSV or Excel and include company name, registered address, region, SIC code, employee size, revenue band, website and email where available.
Each entry on the UK security companies list includes company name, Companies House registration number, registered address, region, SIC code(s), incorporation date, current status (active or dormant), employee size band, revenue band, website, phone number and email where available.
The list refreshes continuously from the UK companies register. New registrations, address changes, status changes and updated financial filings propagate to your downloaded list within days.
Yes. The list of UK security companies can be exported as an email list or a postal mailing list for outbound campaigns. Filter by region, employee size and revenue band first to narrow your target segment, then request the export with email and address fields included.
Yes. Filter to a single city or town, pick multiple cities, or take a whole region. For city-specific pages, click any row in the regional breakdown below the main list.
Yes. Filter by region, employee size, revenue band and founding year to build a precise target list, then export with contact fields for outreach. All records are GDPR-compliant business information sourced from the public UK companies register.
