- H & P SIMPSON LIMITED- 06880783 - Incorporated on 20 April 2009 
- W.J. SIMPSON LIMITEDLiquidation- SC144294 - Incorporated on 10 May 1993 
- R.G. SIMPSON LIMITED- 00506757 - Incorporated on 7 April 1952 
- A. & D. SIMPSON LIMITEDLiquidation- 01703074 - Incorporated on 1 March 1983 
- H SIMPSON LIMITED- 06053637 - Incorporated on 16 January 2007 
- S. SIMPSON LIMITED- 08001294 - Incorporated on 22 March 2012 
- SIMPSON I.T. LIMITED- 07754014 - Incorporated on 26 August 2011 
- GEOFF SIMPSON LTD- 07292810 - Incorporated on 23 June 2010 
- BAKER SIMPSON LTDDisolved- 09505398 - Dissolved on 1 August 2023 
- E & E SIMPSON LIMITEDActive - Proposal to Strike off- 08228649 - Incorporated on 25 September 2012 
- SIMPSON FROUD LLP- OC385165 - Incorporated on 16 May 2013 
- K M SIMPSON LIMITEDActive - Proposal to Strike off- 08692025 - Incorporated on 16 September 2013 
- TANSY SIMPSON LTD- 09265755 - Incorporated on 15 October 2014 
- A J SIMPSON LIMITED- SC479609 - Incorporated on 10 June 2014 
- ROBIN SIMPSON 4461 LTDActive - Proposal to Strike off- 10133367 - Incorporated on 19 April 2016 
- L. SIMPSON LIMITED- 10239456 - Incorporated on 20 June 2016 
- E SIMPSON LIMITEDActive - Proposal to Strike off- 10216198 - Incorporated on 6 June 2016 
- DAVID SIMPSON LTDActive - Proposal to Strike off- SC657756 - Incorporated on 18 March 2020 
- T.M. SIMPSON LIMITED- SC033642 - Incorporated on 5 February 1959 
- SIMPSON CLOSE LTD- 16527055 - Incorporated on 18 June 2025