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- WILLIAMS & WILLIAMS HOLDING LTD- 15465655 - Incorporated on 4 February 2024 
- WILLIAMS & WILLIAMS (WESTBURY) LIMITEDLiquidation- 00843969 - Incorporated on 1 April 1965 
- WILLIAMS & WILLIAMS CONSULTANCY LTD- 16085771 - Incorporated on 18 November 2024 
- PRO EVOLUTION SOCCER LEAGUE LTDDissolved- 05232026 - Dissolved on 12 January 2010 
- EECO LIMITED- 05579821 - Incorporated on 30 September 2005 
- ETHANNA DEVELOPMENTS LIMITED- NI044083 - Incorporated on 11 September 2002 
- ETHANS INVESTMENTS LIMITED- 10620223 - Incorporated on 15 February 2017 
- J.ETHAN CONSULTING LIMITED- 09380971 - Incorporated on 9 January 2015 
- ETHAN PEEL SITE SERVICES LTDDisolved- 14296544 - Dissolved on 16 January 2024 
- DAMONICA LTDActive - Proposal to Strike off- 06198292 - Incorporated on 2 April 2007 
- OC414933 LLPActive - Proposal to Strike off- OC414933 - Incorporated on 5 December 2016 
- TECHNICAL ETHANOL LIMITED- 10117453 - Incorporated on 11 April 2016 
- UK ETHAN INTERNATIONAL TRADE CO., LTDDisolved- 11077374 - Dissolved on 6 June 2023 
- ETHAN AND ELLA INVESTMENTS LTDActive - Proposal to Strike off- 10493340 - Incorporated on 23 November 2016 
- D & R WILLIAMS LTD- 10282290 - Incorporated on 16 July 2016 
- LAURENWILLIAMS67 LTD- 13606457 - Incorporated on 7 September 2021 
- M & F WILLIAMS LIMITED- 09472306 - Incorporated on 5 March 2015 
- N G JAMESActive - Proposal to Strike off- 07454408 - Incorporated on 29 November 2010 
- SGME CONSULTING LTD- 11686028 - Incorporated on 20 November 2018 - 7 Hobbs Hill, Braunton