- SIAN ASHLEY TM LTD- 15995800 - Incorporated on 3 October 2024 
- SIANYA LIMITED- 04950949 - Incorporated on 3 November 2003 
- SIAN WISEMAN LTDActive - Proposal to Strike off- 10100758 - Incorporated on 4 April 2016 
- SIANVI LIMITEDActive - Proposal to Strike off- 07297153 - Incorporated on 28 June 2010 
- SIANNA LIMITEDDissolved- 06579733 - Dissolved on 2 April 2013 
- SIAN REMOVALS LTD- 15891019 - Incorporated on 12 August 2024 
- SIAN CO ACCOUNTANTS LTD- 07599625 - Incorporated on 11 April 2011 
- SIAN CLIFFORD LTD.Dissolved- 09041397 - Dissolved on 5 June 2018 
- BRAND TEAM SIAN LTD- 12319866 - Incorporated on 18 November 2019 
- SIAN PEER LIMITED- 13904545 - Incorporated on 9 February 2022 
- SIAN BATCUP PMU LTD- 15889126 - Incorporated on 9 August 2024 
- SIAN&JOHN LIMITEDDisolved- SC822957 - Dissolved on 17 June 2025 
- THE HOUSE OF SIAN LTD- 15962309 - Incorporated on 17 September 2024 
- DR SIAN EDWARDS LTDDisolved- 11124739 - Dissolved on 8 March 2022 
- SIAN ALIGN EDGE LTDDisolved- 16101893 - Dissolved on 22 April 2025 
- SIAN HAIR LIMITEDDisolved- 12264870 - Dissolved on 4 February 2025 
- SIAN REID LIMITEDDissolved- 10848263 - Dissolved on 11 December 2018 
- SIANA SWINDON LTDActive - Proposal to Strike off- 10985883 - Incorporated on 28 September 2017 
- SIAN COTTRELL LTDDisolved- 13778950 - Dissolved on 11 June 2024 
- SUE SIAN MAKEUP LTDActive - Proposal to Strike off- 07677980 - Incorporated on 22 June 2011