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- MR DAVID P C LTD- 16409026 - Incorporated on 25 April 2025 
- MRH DAVID LTDActive - Proposal to Strike off- 11325633 - Incorporated on 24 April 2018 
- MR R.D.WILLIAMS LTD- 07128014 - Incorporated on 18 January 2010 
- MR WILLIAMS 7970 LTDActive - Proposal to Strike off- 10630174 - Incorporated on 21 February 2017 
- MR WILLIAMS LTD- 13339620 - Incorporated on 16 April 2021 
- TELEPLUS LIMITED- 03082953 - Incorporated on 24 July 1995 
- POWER PULSE SYSTEMS LTD- 12652491 - Incorporated on 8 June 2020 
- DAVID MARTYN HOPKINS LIMITEDActive - Proposal to Strike off- 09420485 - Incorporated on 3 February 2015 
- MARTYN-DAVID ASSOCIATES LIMITED- 07093461 - Incorporated on 2 December 2009 
- DAVID J. WILLIAMS LTD- 09668455 - Incorporated on 2 July 2015 
- MR A W DAVIDSON LTD- 07957458 - Incorporated on 21 February 2012 
- MR R WILLIAMSON LTDDisolved- 14605198 - Dissolved on 21 May 2024 
- MR DAVID HAILS LTDDisolved- 14066091 - Dissolved on 14 February 2023 
- MR DAVID PEREZ LTD- 11853572 - Incorporated on 28 February 2019 
- DAVID WILLIAMS 4350 LTDActive - Proposal to Strike off- 10133178 - Incorporated on 19 April 2016 
- DAVID WILLIAMS 21 LTDActive - Proposal to Strike off- 07545433 - Incorporated on 28 February 2011 
- MR DAVID BRADY LTD.Active - Proposal to Strike off- 10943286 - Incorporated on 4 September 2017 
- WILLIAMS DAVID LTDDissolved- 07384019 - Dissolved on 18 October 2011 
- DAVID J. WILLIAMS LTD- 15842311 - Incorporated on 16 July 2024