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- DJ MARSON LIMITED- 10363350 - Incorporated on 7 September 2016 
- MARSONI LIMITED- 01693877 - Incorporated on 24 January 1983 
- DA MARSON LIMITEDDisolved- 12473993 - Dissolved on 5 October 2021 
- JEFFREY MARSON LTD- 09782923 - Incorporated on 17 September 2015 
- MARSON IMPORTS LIMITED- 03019168 - Incorporated on 7 February 1995 
- MARSON BOWER LIMITED- 05127859 - Incorporated on 13 May 2004 
- MARSON ASSOCIATES LIMITEDActive - Proposal to Strike off- 07225659 - Incorporated on 16 April 2010 
- CAMPBELL MARSON LIMITED- 06218989 - Incorporated on 19 April 2007 
- MARSON ELECTRICAL LTD- 12245331 - Incorporated on 4 October 2019 
- MARSON ENFORCEMENT LIMITED- 14852655 - Incorporated on 8 May 2023 
- STUART & STUART WS LIMITEDDisolved- SC103047 - Dissolved on 9 May 2023 
- MARSON RESIDENTIAL LIMITED- 13108617 - Incorporated on 4 January 2021 
- MARSON MARKETS LLPDissolved- OC317978 - Dissolved on 28 May 2008 
- MARSON HOLDINGS LIMITED- 03079612 - Incorporated on 13 July 1995 
- MARSON ENGINEERING LTD- 07292149 - Incorporated on 22 June 2010 
- MARSON SOLUTIONS LIMITEDDissolved- 09454998 - Dissolved on 10 September 2019 
- MARSONS TRAVEL LTD- 07475014 - Incorporated on 21 December 2010 
- MARSONI GLOBAL LTDDisolved- 15331883 - Dissolved on 13 May 2025 
- CHRIS MARSON LIMITED- 06788479 - Incorporated on 12 January 2009