- AZTEC CONTROL SERVICES LIMITEDActive - Proposal to Strike off- 05432652 - Incorporated on 21 April 2005 
- CARGO CONTROL SERVICES LIMITEDLiquidation- 02610108 - Incorporated on 13 May 1991 
- CONSTRUCTION CONTROL SERVICES LIMITEDDissolved- 03841400 - Dissolved on 23 April 2013 
- CONTROL INSTALLATION SERVICES LIMITEDDissolved- 06852822 - Dissolved on 5 March 2013 
- CONTROL MANAGEMENT SERVICES LIMITEDActive - Proposal to Strike off- 02503412 - Incorporated on 18 May 1990 
- MAW CONTROL SERVICES LIMITED- 05721491 - Incorporated on 24 February 2006 
- THOMPSON CONTROL SERVICES LIMITEDDissolved- 04734649 - Dissolved on 13 May 2014 
- CONTROL SYSTEM SERVICES LIMITED- 04446524 - Incorporated on 24 May 2002 
- RS CONTROL SERVICES LIMITED- 07092315 - Incorporated on 1 December 2009 
- PEST CONTROL SERVICES LIMITED- 03321993 - Incorporated on 21 February 1997 
- MONITORING & CONTROL SERVICES LIMITED- 02958014 - Incorporated on 11 August 1994 
- EMERGENCY CONTROL SERVICES LIMITED- 07431332 - Incorporated on 5 November 2010 
- MANAGED CONTROL SERVICES LIMITED- 07455939 - Incorporated on 1 December 2010 
- PENDANT CONTROL SERVICES LIMITED- 07980145 - Incorporated on 7 March 2012 
- P.J.A. CONTROL SERVICES LIMITED- 08042234 - Incorporated on 23 April 2012 
- DILLON CONTROL SERVICES LIMITED- 02869884 - Incorporated on 8 November 1993 
- FREIGHT CONTROL SERVICES LIMITEDLiquidation- 02455553 - Incorporated on 27 December 1989 
- LIGHTING CONTROL SERVICES LIMITED- 05547253 - Incorporated on 26 August 2005 
- LOOP CONTROL SERVICES LIMITEDActive - Proposal to Strike off- 06385402 - Incorporated on 1 October 2007 
- PBM CONTROL SERVICES LIMITED- 09112523 - Incorporated on 2 July 2014