- Sebastian Jan, Mr. NOWOGRODZKI- Born September 1985 - 50 Rosewall Road Rosewall Road, Southampton, England, SO16 5DW 
- Pawel Sebastian, Mr. NIEDZIALEK- Born September 1979 - 34 Dunsford, Widnes, England, WA8 4NP 
- Philip Sebastian, Mr. ALLOUCHE- Born January 1971 - 308 High Street, Croydon, Surrey, England, CR0 1NG 
- A A SEBASTIAN LTD- 14949494 - Incorporated on 21 June 2023 
- MARSANNE LTDDissolved- 06206296 - Dissolved on 30 April 2013 
- SIMIA WALL CONSULTANTS LIMITED- 10505506 - Incorporated on 1 December 2016 
- SIMIT SARAYI DALSTON LTDDissolved- 10767526 - Dissolved on 12 November 2019 
- SIMIA LIMITEDDisolved- 07123088 - Dissolved on 2 January 2024 
- SIMIC LIMITEDDisolved- 05369030 - Dissolved on 20 May 2025 
- SIMIAN RISK LLP- OC379833 - Incorporated on 1 November 2012 
- CODEX SIMIA LTDDissolved- 08712444 - Dissolved on 30 October 2018 
- SIMI'S BEAUTY LTDActive - Proposal to Strike off- 08438330 - Incorporated on 11 March 2013 
- M A SIMII GROUP LTDActive - Proposal to Strike off- 11436959 - Incorporated on 27 June 2018 
- DATA SIMIAN LTDActive - Proposal to Strike off- 10784212 - Incorporated on 23 May 2017 
- SIMIT CAFE UK LTDDisolved- 14340715 - Dissolved on 13 February 2024 
- SIMIA GROUP LTDActive - Proposal to Strike off- 10018692 - Incorporated on 22 February 2016 
- CORI&SIMION LTDActive - Proposal to Strike off- 12134184 - Incorporated on 1 August 2019 
- SIMIANOPS LTDDisolved- SC689315 - Dissolved on 7 February 2023 
- M SIMION AUTO LTDDisolved- 14036769 - Dissolved on 19 September 2023 
- SIMIM LIMITEDDissolved- 07307322 - Dissolved on 20 February 2018