- 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 
- Neil, Mr. DUFFIELD- Born July 1986 - 2a Riviera Drive, Southend-On-Sea, Essex, England, SS1 2RB 
- Neil, Mr. AREMBAND- Born August 1974 - Flat 9, Tansy Apartments Flat 9, Tansy Apartments, 31, Inglis Way, London, Barnet, England, NW7 1TB 
- MR NEIL MACVICAR- Born January 1978 - 25 HARBOUR REACH, THE BOULEVARD, CHELSEA, UNITED KINGDOM, SW6 2SS 
- GIRLING & FRASER LTD.- SC282393 - Incorporated on 31 March 2005 
- Neil, Mr. BAVISTER- Born May 1976 - Fiat House 240 Bath Road, Slough, Berks, SL1 4DX 
- 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 
- Neil, Mr. WOODWARD- 166 Newcastle Avenue, Worksop, Nottinghamshire, England, S80 1NG 
- Neil, Mr. MCDONALD- Born May 1970 - 19 Broad Street, Alloa, Clackmannanshire, Scotland, FK10 1AN