- ELITE CONTROL SERVICES LIMITED- 12510380 - Incorporated on 11 March 2020 
- AIR CONTROL SERVICES LIMITEDDissolved- 05826972 - Dissolved on 23 November 2010 
- ASPECT CONTROL SERVICES LIMITED- 03008991 - Incorporated on 12 January 1995 
- LOGIC CONTROL SERVICES LIMITEDDissolved- 03672237 - Dissolved on 9 February 2010 
- BERKSHIRE CONTROL SERVICES LIMITEDLiquidation- 07430634 - Incorporated on 5 November 2010 
- FIRE CONTROL SERVICES LIMITED- 05983384 - Incorporated on 31 October 2006 
- PLANT CONTROL SERVICES LIMITED- 03678968 - Incorporated on 4 December 1998 
- CONTROL WIRING SERVICES LIMITEDActive - Proposal to Strike off- 09242830 - Incorporated on 1 October 2014 
- PEST CONTROL SERVICES LIMITED- 09439785 - Incorporated on 13 February 2015 
- CONTROL CNC SERVICES LIMITED- 10332537 - Incorporated on 16 August 2016 
- EVENT CONTROL SERVICES LIMITEDActive - Proposal to Strike off- 10862285 - Incorporated on 12 July 2017 
- AM CONTROL SERVICES LIMITED- 13310050 - Incorporated on 1 April 2021 
- BORDER CONTROL SERVICES LIMITED- 14429114 - Incorporated on 19 October 2022 
- INTEGRATED CONTROL SERVICES LIMITED- 05120095 - Incorporated on 5 May 2004 
- CONTROL DATA SERVICES LIMITEDDissolved- 04234929 - Dissolved on 8 November 2011 
- AURORA CONTROL SERVICES LIMITEDDissolved- 03078200 - Dissolved on 9 February 2010 
- TURBINE CONTROL SERVICES LIMITEDDissolved- 03892801 - Dissolved on 26 July 2011 
- KILN CONTROL SERVICES LIMITED- 04694649 - Incorporated on 12 March 2003 
- K.M.S. CONTROL SERVICES LIMITEDActive - Proposal to Strike off- 02208132 - Incorporated on 24 December 1987 
- DOCUMENT CONTROL SERVICES LIMITED- 03386132 - Incorporated on 12 June 1997