- MR BARKERS LTD- 14295489 - Incorporated on 15 August 2022 
- MR DJ BARKER LTD- 14846225 - Incorporated on 4 May 2023 
- EMARIVH GROUNDWORK & UTILITIES LIMITED- 09004449 - Incorporated on 22 April 2014 
- SIMPSON AND BARKER LTD- 16129061 - Incorporated on 10 December 2024 
- JAMES BARKER LTD- 10621457 - Incorporated on 15 February 2017 
- MR JAMES LTD- NI603682 
- JAMES SIMPSON 1972 LTDActive - Proposal to Strike off- 12603110 - Incorporated on 14 May 2020 
- JAMES SIMPSON LTD.Disolved- SC493032 - Dissolved on 24 January 2023 
- MELISSA BARKER-SIMPSON LTD- 15864250 - Incorporated on 29 July 2024 
- BARKER JAMES LIMITED- 11007478 - Incorporated on 11 October 2017 
- HILSIDE PROPERTIES NI LTD- NI651216 - Incorporated on 22 February 2018 
- MR NEIL BARKER LIMITEDDisolved- 13769748 - Dissolved on 30 May 2023 
- ALEXANDER SIMPSON RECRUITMENT LTD- 14319978 - Incorporated on 26 August 2022 
- JAMES G SIMPSON LIMITED- 10144571 - Incorporated on 25 April 2016 
- MR JAMES LIMITED- 12074753 - Incorporated on 28 June 2019 
- MR JAMES FILMS LTD- 14325884 - Incorporated on 30 August 2022 
- JAMES BARKER BELL LIMITEDDissolved- 02818445 - Dissolved on 10 May 2011 
- JAMES BARKER INTERNATIONAL LIMITEDActive - Proposal to Strike off- 09775504 - Incorporated on 14 September 2015 
- BARKER JAMES DEVELOPMENTS LIMITEDActive - Proposal to Strike off- 04973147 - Incorporated on 21 November 2003 
- BARKER JAMES GAMES LIMITEDActive - Proposal to Strike off- 10905615 - Incorporated on 8 August 2017