- MR DAVID HAILS LTDDisolved- 14066091 - Dissolved on 14 February 2023 
- MR DAVID PEREZ LTD- 11853572 - Incorporated on 28 February 2019 
- SIMON DAVID TONGE LTD- 11525907 - Incorporated on 20 August 2018 
- MR DAVID BRADY LTD.Active - Proposal to Strike off- 10943286 - Incorporated on 4 September 2017 
- J.M.HOLLIER LIMITEDActive - Proposal to Strike off- 09490815 - Incorporated on 16 March 2015 
- MR THOMAS DAVID LTDDisolved- 15351641 - Dissolved on 3 June 2025 
- MR SIMON COHEN LIMITED- 08469536 - Incorporated on 2 April 2013 
- HOLLIER ENGINEERING LIMITED- 05458507 - Incorporated on 20 May 2005 
- MR SIMON HUTCHINGS LIMITEDDissolved- 07075559 - Dissolved on 28 June 2011 
- DAVID SIMON NORTH EAST LTDDisolved- 15091115 - Dissolved on 28 January 2025 
- MR DAVID SHAW LIMITEDDissolved- 06674205 - Dissolved on 23 March 2010 
- HOLLIER WHEELS LTD- 14716292 - Incorporated on 8 March 2023 
- HOLLIER SURVEYING LTDActive - Proposal to Strike off- 08236747 - Incorporated on 2 October 2012 
- HOLLIER HOLDINGS LIMITED- 14129629 - Incorporated on 24 May 2022 
- SIMON DAVID JEWELLERS LIMITEDActive - Proposal to Strike off- 10098231 - Incorporated on 1 April 2016 
- SIMON DAVID HAIRDRESSING LIMITEDLiquidation- 07673577 - Incorporated on 17 June 2011 
- DAVID SIMON LEVIN FOUNDATION- 09500717 - Incorporated on 20 March 2015 
- DAVID SIMON (HOLDCOA) LIMITED- 13362045 - Incorporated on 27 April 2021 - 5 Jardine House, Harrovian Business Village, Bessborough Road, Harrow, HA1 3EX 
- HOLLIER-WYNNE LTDActive - Proposal to Strike off- 08999689 - Incorporated on 16 April 2014 
- 17 HOLLIERS HILL LTD- 10176015 - Incorporated on 12 May 2016