- SIMPSON'S JET LTDActive - Proposal to Strike off- 08946910 - Incorporated on 19 March 2014 
- JAN SIMPSON LTD- 09329316 - Incorporated on 26 November 2014 
- JB SIMPSON & CO LTD- SC854749 - Incorporated on 7 July 2025 
- MR AND MRS P HANLON GROUP LIMITED- 10092065 - Incorporated on 31 March 2016 
- MR F G, MRS N K AND MR A J GAMMON LIMITED- 08665204 - Incorporated on 27 August 2013 
- RV SIMPSON & SONS- LP004125 - Incorporated on 5 November 1991 
- SIMPSON & OAG LTD- SC420157 - Incorporated on 22 March 2012 
- IAN SIMPSON LTD- 10294638 - Incorporated on 25 July 2016 
- C AND M SIMPSON LTD- 10849510 - Incorporated on 4 July 2017 
- SIMPSON BMC LTD- 12146574 - Incorporated on 8 August 2019 
- MJE SIMPSON LTD- 14638081 - Incorporated on 3 February 2023 
- SIMPSONHAUGH CONSULTANTS LLPDisolved- OC337115 - Dissolved on 22 August 2023 
- SIMPSON FOX LTD- 13156969 - Incorporated on 25 January 2021 
- ROB SIMPSON LTD- 14068891 - Incorporated on 26 April 2022 
- SIR SIMPSON LTDActive - Proposal to Strike off- 07546460 - Incorporated on 1 March 2011 
- D M SIMPSON & SON LTDDisolved- 08525564 - Dissolved on 23 August 2022 
- SIMPSON ICT LTD- 08578110 - Incorporated on 20 June 2013 
- SPE SIMPSON LTD- 12694017 - Incorporated on 24 June 2020 
- JAC SIMPSON LTD.Disolved- SC631044 - Dissolved on 13 December 2022 
- SIMPSON GPS LTDActive - Proposal to Strike off- NI060234