- 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 
- MR & MR LTD- 16489396 - Incorporated on 2 June 2025 
- ONESUBSEA UK LIMITED- 00400176 - Incorporated on 7 November 1945 
- MR MR LTDActive - Proposal to Strike off- 15533685 - Incorporated on 1 March 2024 
- CASTLETONMILLAR LIMITEDDissolved- 08827297 - Dissolved on 12 May 2015 
- CASTLETON CAR WASH LTDActive - Proposal to Strike off- 12080799 - Incorporated on 2 July 2019 
- ANETTA SAWCZUK LTDActive - Proposal to Strike off- 09812993 - Incorporated on 7 October 2015 
- MR&MRS B'S LTDDissolved- 10677155 - Dissolved on 20 August 2019 
- MR&MRS LTDActive - Proposal to Strike off- 12389034 - Incorporated on 7 January 2020 
- DLP DERIVATIVES LLPActive - Proposal to Strike off- OC354152 - Incorporated on 15 April 2010 
- MR & MRS O LTD.Active - Proposal to Strike off- SC217464 - Incorporated on 29 March 2001 
- MR & MRS W LTD- 08480767 - Incorporated on 9 April 2013 
- MR&MRS LTDActive - Proposal to Strike off- 10922002 - Incorporated on 18 August 2017