- MARK CASSELLS LIMITED- NI671212 - Incorporated on 23 July 2020 
- MARK JEREMY POPE LTD- 15673872 - Incorporated on 23 April 2024 
- CASSELL LIMITEDDisolved- 02004498 - Dissolved on 16 August 2022 
- J CASSELL LTDActive - Proposal to Strike off- 07928336 - Incorporated on 30 January 2012 
- LEE CASSELL LTDActive - Proposal to Strike off- 11539514 - Incorporated on 28 August 2018 
- CASSELLINI LTD.Active - Proposal to Strike off- SC387007 - Incorporated on 13 October 2010 
- CASSELL CONTRACTS LIMITED- SC740098 - Incorporated on 2 August 2022 
- CASSELL GROUP LTD- 13153169 - Incorporated on 22 January 2021 
- THE POLISHED FLOOR COMPANY LIMITED- 08232646 - Incorporated on 28 September 2012 
- MICHAEL TARRING ARCHITECTS LTD- 13026977 - Incorporated on 17 November 2020 
- CASSELL MOORE LLPActive - Proposal to Strike off- OC386361 - Incorporated on 3 July 2013 
- JOHN CASSELLS LTDActive - Proposal to Strike off- SC594772 - Incorporated on 18 April 2018 
- FRANCES CASSELL MARKETING MENTOR LTD- 16018195 - Incorporated on 15 October 2024 
- CASSELL DEVELOPMENTS LTDActive - Proposal to Strike off- 11108397 - Incorporated on 12 December 2017 
- DENE CASSELLS LTDDisolved- 13873138 - Dissolved on 30 January 2024 
- CASSELL MOTORS LTDDisolved- 15193435 - Dissolved on 31 December 2024 
- CASSELLS 4 LIMITEDDissolved- 05076429 - Dissolved on 28 August 2012 
- CASSELLS LIMITED- 04769063 - Incorporated on 19 May 2003 
- CASSELL CANINE LTD- 16393640 - Incorporated on 17 April 2025 
- CASSELL CONSULTANCY LTDDisolved- 10703430 - Dissolved on 20 July 2021