- LUCAS GIRLING LIMITEDDisolved- 00047945 - Dissolved on 19 April 2022 
- NEIL DAVIDSON MEDICAL LIMITED- 09365539 - Incorporated on 23 December 2014 
- GIRLING PROPERTIES LIMITED- 14783416 - Incorporated on 5 April 2023 
- GIRLING PROPERTY LTD- 14790767 - Incorporated on 10 April 2023 
- GAZIANO & GIRLING LIMITED- 05783689 - Incorporated on 18 April 2006 
- SHOT GIRLING LIMITED- 13747780 - Incorporated on 17 November 2021 
- DAVID O'NEIL WELL SERVICES LIMITEDDissolved- SC350755 - Dissolved on 3 August 2012 
- DAVID NEILSON AGENCIES LIMITED- SC097810 - Incorporated on 13 March 1986 
- MIKE GIRLING LIMITED- 04304576 - Incorporated on 15 October 2001 
- GIRLING HOLDINGS LTD- 14829793 - Incorporated on 26 April 2023 
- GIRLINGS LIMITED- 06533389 - Incorporated on 13 March 2008 
- DAVID O'NEILL ASSOCIATES LIMITED- SC574656 - Incorporated on 25 August 2017 
- GIRLING & FRASER LTD.- SC282393 - Incorporated on 31 March 2005 
- CORNEY & GIRLING LIMITED- 06237159 - Incorporated on 4 May 2007 
- GIRLING ENGINEERING LIMITED- 03675819 - Incorporated on 30 November 1998 
- GIRLING JONES LIMITED- 07492806 - Incorporated on 14 January 2011 
- GIRLING & COMPANY LIMITED- 07348196 - Incorporated on 17 August 2010 
- GIRLING ASSOCIATES LIMITEDDissolved- 09238683 - Dissolved on 21 May 2019 
- GIRLING PIPEWORKS LTD- 11831777 - Incorporated on 18 February 2019 
- GIRLING BRICKWORK LTD- 15025701 - Incorporated on 25 July 2023