| AK9 SECURITY AND FM SOLUTIONS LTD (10873512) shared | · | · | active |
| ASCOT SERVICES UK LIMITED (04778608) shared | · | · | active |
| AUXILIUM SERVICES LTD (11508764) shared | · | · | active |
| AXIS RECRUITMENT LIMITED (04827750) shared | · | · | active |
| BIDVEST NOONAN (UK) LIMITED (05049403) shared | · | · | active |
| BOLD SECURITY GROUP (UK) LTD (07728566) shared | · | · | active |
| CARLISLE SECURITY SERVICES LIMITED (02654100) shared | · | · | active |
| CHASE SERVICES GROUP LTD (08987610) shared | · | · | active |
| CITY GROUP SECURITY LIMITED (02814854) shared | · | · | active |
| COMPACT SECURITY SERVICES LIMITED (08748515) shared | · | · | active |
| CONTROLLED SPACE LIMITED (04440404) shared | · | · | active |
| CORPS 7 LTD (10798137) shared | · | · | active |
| CROWN SECURITY SOLUTIONS LIMITED (08423599) shared | · | · | active |
| CUTLASS GROUP LTD (11561644) shared | · | · | active |
| CYS SECURITY LTD (06823982) shared | · | · | active |
| DELTA FORCE GROUP LTD (07683845) shared | · | · | active |
| DGP PLC (05597361) shared | · | · | active |
| E.M.S. (SECURITY SERVICES) LIMITED (03677178) shared | · | · | active |
| FIRST RESPONSE GROUP LTD (06263326) shared | · | · | active |
| G4S SECURE SOLUTIONS (UK) LIMITED (01046019) shared | · | · | active |
| GOUGH AND KELLY LIMITED (02274521) shared | · | · | active |
| GROSVENOR CORPORATE SECURITY LIMITED (01530957) shared | · | · | active |
| GSL DARDAN LIMITED (04384007) shared | · | · | active |
| GUARDING SOLUTIONS & TRAINING SERVICES LTD (07884307) shared | · | · | active |
| I.C.T.S. (U.K.) LIMITED (02143366) shared | · | · | active |
| INFINITY MANPOWER GROUP LTD (14201168) shared | · | · | active |
| JANNET SECURITY SERVICES LTD (09529757) shared | · | · | active |
| KESTREL GUARDS LIMITED (02316429) shared | · | · | active |
| KINGDOM SERVICES GROUP LIMITED (02795197) shared | · | · | active |
| LEON GUARDING & FM LIMITED (10504476) shared | · | · | active |
| MADIGANGILL RESOURCE LIMITED (07037354) shared | · | · | active |
| MAK INTEGRATED SERVICES LIMITED (06990809) shared | · | · | active |
| MITIE SECURITY LIMITED (01013210) shared | · | · | active |
| MPD FM LIMITED (04632279) shared | · | · | active |
| NORSE COMMERCIAL SERVICES LIMITED (02888808) shared | · | · | active |
| OCULUS SECURITY SOLUTIONS LIMITED (09287465) shared | · | · | active |
| ORBIS PROTECT LIMITED (02476859) shared | · | · | active |
| OSG SERVICE GROUP LTD (12521642) shared | · | · | active |
| PAWSOME SEARCH LTD (16245802) shared | · | · | active |
| PRIME SECURE SYSTEMS LTD (SC449831) shared | · | · | active |
| PROFESSIONAL GUARDING FACILITIES MANAGEMENT LTD (13216981) shared | · | · | active |
| PRO SENTRY LTD (09704328) shared | · | · | active |
| RADIUS SECURITY LTD (06385994) shared | · | · | active |
| REGENT FM LIMITED (11072488) shared | · | · | active |
| REGENT OFFICE CARE LIMITED (01990614) - t/a Samsic UK shared | · | · | active |
| RELYON GUARDING & SECURITY SERVICES LTD (05057256) shared | · | · | active |
| RISK MANAGEMENT SERVICES (CHILTERN) LIMITED (01544192) shared | · | · | active |
| ROCK SECURITY SOLUTIONS LIMITED (10979625) shared | · | · | active |
| SAMSON SECURITY LTD (04112644) shared | · | · | active |
| SECURE FM LTD (10678504) shared | · | · | active |
| SECURE ON SITE PRIVATE SECURITY SERVICES LIMITED (08211185) shared | · | · | active |
| SECURITY WORKS LIMITED (12594314) shared | · | · | active |
| SERVO SECURITIES LIMITED (08822222) shared | · | · | active |
| SGC HOLDINGS LIMITED (05912760) shared | · | · | active |
| SHIELD SECURITY SERVICES (YORKSHIRE) LIMITED (04464684) shared | · | · | active |
| SMART SEC SOLUTIONS LTD (07036995) shared | · | · | active |
| SSG SUPPORT SERVICES GROUP LTD (09675743) shared | · | · | active |
| SUPREME PROTECTION LIMITED (08422367) shared | · | · | active |
| TAYBAR SECURITY LTD (06955845) shared | · | · | active |
| TC FACILITIES MANAGEMENT LIMITED (02567667) shared | · | · | active |
| THE KEYHOLDING COMPANY LIMITED (03538605) shared | · | · | active |
| UNITED GUARDING SERVICES LTD (02513542) shared | · | · | active |
| UNIVERSAL SUPPORT SERVICES GROUP (USSG) LTD (10289772) shared | · | · | active |
| VERTAS GROUP LIMITED (07728211) shared | · | · | active |
| VIGILANT PROTECT UK LIMITED (SC212151) - t/a Vigilant Security (previously operated as Croma Vigilant) shared | · | · | active |
| ZAM SECURE LIMITED (09672841) shared | · | · | active |