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- MARK SENIOR LIMITED- 16093671 - Incorporated on 21 November 2024 
- ADRIAN&MARK LTDActive - Proposal to Strike off- 07552607 - Incorporated on 4 March 2011 
- MARK SENIOR SERVICES LIMITEDActive - Proposal to Strike off- 08229437 - Incorporated on 26 September 2012 
- ADRIAN SENIOR FINANCIAL ASSOCIATES LTDDisolved- 10129658 - Dissolved on 21 June 2022 
- MARK SENIOR SERVICES LTDDisolved- 10801884 - Dissolved on 21 March 2023 
- ADRIAN MARKEY LTD- NI641049 - Incorporated on 26 September 2016 
- MARK ADRIAN BESA LIMITED- 15087366 - Incorporated on 21 August 2023 
- ADRIAN MARK JACKSON LTD- 15313106 - Incorporated on 28 November 2023 
- SENIOR MARKET LIMITEDDisolved- 13059444 - Dissolved on 7 February 2023 
- MARKS GIDDENS CONSULTANTS LTDActive - Proposal to Strike off- 08420779 - Incorporated on 26 February 2013 
- SENIOR MARKETING & PROMOTIONS L.P.- SL023495 - Incorporated on 5 November 2015 
- AVOCADO CLEANING LTDDisolved- 12389988 - Dissolved on 22 February 2022 
- ADRIANA&ADRIANA LTDDisolved- 12210397 - Dissolved on 5 September 2023 
- SENIOR360 LTD- 16346188 - Incorporated on 26 March 2025 
- SENIOR Z LTDActive - Proposal to Strike off- 08567111 - Incorporated on 12 June 2013 
- E SENIOR LTDActive - Proposal to Strike off- 08590708 - Incorporated on 1 July 2013 
- SENIOR PLC- 00282772 - Incorporated on 18 December 1933 
- SENIOR MARKETING CONSULTANCY LTDActive - Proposal to Strike off- 07677082 - Incorporated on 21 June 2011 
- J SENIOR LTD- 15299626 - Incorporated on 21 November 2023