- LLEWELYN HOUSE MANAGEMENT LIMITED- 02673716 - Incorporated on 23 December 1991 
- BARRY LLEWELYN SPORTS LIMITED- 02874864 - Incorporated on 24 November 1993 
- LLEWELYN DAVIES YEANG LIMITED- 08378751 - Incorporated on 29 January 2013 
- NICHOLAS LLEWELYN BARBERS LTDActive - Proposal to Strike off- 09955272 - Incorporated on 18 January 2016 
- MR & MRS S LTDActive - Proposal to Strike off- 12290244 - Incorporated on 30 October 2019 
- GARY LLEWELYN DAVIES LIMITEDActive - Proposal to Strike off- 07103296 - Incorporated on 13 December 2009 
- LLEWELYN-BOWEN SHOPS LIMITEDActive - Proposal to Strike off- 05649076 - Incorporated on 8 December 2005 
- GARDNER LLEWELYN ASSOCIATES LIMITED- 05695301 - Incorporated on 2 February 2006 
- LLEWELYN DAVIES WEEKS LIMITED- 08494957 - Incorporated on 18 April 2013 
- LLEWELYN IT COMMUNICATIONS LTD- 12269004 - Incorporated on 17 October 2019 
- TOWNLEY LLEWELYN BLACK LIMITEDDisolved- 13623799 - Dissolved on 7 November 2023 
- LLEWELYN SUPPORT SERVICES LTD- 15014941 - Incorporated on 19 July 2023 
- LLEWELYN GRAY CONSULTING LTD- 15090314 - Incorporated on 22 August 2023 
- GARY LLEWELYN DAVIES GLD LTDActive - Proposal to Strike off- 08864083 - Incorporated on 28 January 2014 
- LLEWELYN SPORTS (LLANELLI) LIMITEDLiquidation- 01521207 - Incorporated on 9 October 1980 
- LLEWELYN LEWIS SENNIK LIMITEDDissolved- 04940627 - Dissolved on 10 September 2013 
- LLEWELYN CARE PLUS LIMITEDDisolved- 13009788 - Dissolved on 24 January 2023 
- LLEWELYN OWENS PROPERTIES LIMITED- SC801404 - Incorporated on 1 March 2024 
- LLEWELYN SUPPORT SOLUTIONS LTD- 16551019 - Incorporated on 30 June 2025 
- RICHARDS AND RICHARDS ESTATES LTDDisolved- 15164936 - Dissolved on 4 March 2025