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- DOWNING BIDCO LIMITEDDisolved- 13245381 - Dissolved on 28 February 2023 
- MICHELLE CULLUM CONSULTING LTD- 11742899 - Incorporated on 28 December 2018 
- MATTHEW CULLUM FOLKESTONE LIMITEDDisolved- 12405068 - Dissolved on 27 July 2021 
- CULLUM WHITE PROPERTIES LLPDisolved- OC317163 - Dissolved on 6 May 2025 
- CULLUM DESIGN COMPANY LIMITED- 02784070 - Incorporated on 27 January 1993 
- CULLUM DETUNERS INVESTMENTS LIMITED- 02794825 - Incorporated on 1 March 1993 
- CULLUM BUILDING SERVICES LIMITED- 03437236 - Incorporated on 19 September 1997 
- CULLUM CAPITAL VENTURES LIMITED- 05587424 - Incorporated on 10 October 2005 
- JOHN CULLUM SURVEYING LIMITED- 06116320 - Incorporated on 19 February 2007 
- CULLUM CAPITAL INVESTMENTS LLP- OC436966 - Incorporated on 20 April 2021 
- UNIQUE REBELS UNION LTD- 07799711 - Incorporated on 6 October 2011 
- MAX MAXWELL LTD- SC500762 - Incorporated on 18 March 2015 
- SWJ MAXWELL LTDDisolved- 14365987 - Dissolved on 31 December 2024 
- HERTS CONSTRUCTION SERVICES PLCDissolved- 02668856 - Dissolved on 7 June 2011 
- NORTHCREST HEALTHCARE LIMITED- 11830531 - Incorporated on 15 February 2019 
- NOA MAXWELL ASSOCIATES LIMITEDDissolved- 05280655 - Dissolved on 9 September 2014 
- BESPOKE HOUSE LONDON LTD- 08541641 - Incorporated on 23 May 2013 
- MAY COURIER LTD- 08262726 - Incorporated on 22 October 2012 
- MAXWELL DAVIES HOLDINGS LIMITEDDisolved- 05449700 - Dissolved on 6 June 2023