- CASTLETON ACCESS LIMITED- 16222752 - Incorporated on 1 February 2025 
- MR MR2 LTD- 11218539 - Incorporated on 21 February 2018 
- CASTLETON TECHNOLOGY LIMITED- 03336134 - Incorporated on 19 March 1997 
- CASTLETON TEXTILES LIMITED- 02677104 - Incorporated on 13 January 1992 
- CASTLETON ESTATES LIMITED- NI025972 - Incorporated on 9 October 1991 
- CHF CASTLETON LIMITEDLiquidation- 06296283 - Incorporated on 28 June 2007 
- CASTLETON PROPERTIES LIMITED- 02190787 - Incorporated on 10 November 1987 
- CASTLETON ENTERPRISES LIMITEDDissolved- 07191096 - Dissolved on 4 October 2011 
- CASTLETON YORKE LIMITEDDissolved- 07600033 - Dissolved on 1 May 2012 
- CASTLETON HEALTH LIMITEDActive - Proposal to Strike off- 07644404 - Incorporated on 23 May 2011 
- CASTLETON MORRISON LTD- 07656623 - Incorporated on 2 June 2011 
- CASTLETON CONTRACTS LIMITEDActive - Proposal to Strike off- 08242258 - Incorporated on 5 October 2012 
- PREMIER CASTLETON LTDDisolved- 11987907 - Dissolved on 22 February 2022 
- EMPIRE CASTLETON LTD- 12007488 - Incorporated on 21 May 2019 
- CASTLETON TIMBER LTD- 12275090 - Incorporated on 22 October 2019 
- CASTLETON ENTERPRISES LTD- 13880368 - Incorporated on 29 January 2022 
- CASTLETON EVENTS LTD- SC728514 - Incorporated on 4 April 2022 
- BENTLEY CASTLETON LTDDisolved- 13198031 - Dissolved on 11 April 2023 
- PHOEBE CASTLETON LIMITEDDisolved- 14252332 - Dissolved on 26 December 2023 
- CASTLETON COTTAGE LIMITED- 13725298 - Incorporated on 5 November 2021