- REEL MCKAY LIMITEDDissolved- SC400928 - Dissolved on 13 December 2013 
- SEAN MCKAY LIMITED- 08116637 - Incorporated on 22 June 2012 
- HALL & MCKAY LIMITEDDisolved- 11317474 - Dissolved on 4 March 2025 
- MCKAY CARS LIMITEDDisolved- 14123967 - Dissolved on 27 December 2022 
- MCKAY HOLDINGS LTD- 13778182 - Incorporated on 2 December 2021 
- J M MCKAY BUILDERS LTD- 13113134 - Incorporated on 5 January 2021 
- S MCKAY SERVICES LTD- SC837182 - Incorporated on 10 February 2025 
- MR & MRS NIK LTD- 09626652 - Incorporated on 6 June 2015 
- MR AND MRS A LTDActive - Proposal to Strike off- 11538245 - Incorporated on 28 August 2018 
- JOSEPH C LTDActive - Proposal to Strike off- 11422279 - Incorporated on 19 June 2018 
- JOSEPH 2018 LTDActive - Proposal to Strike off- 11557922 - Incorporated on 7 September 2018 
- JOSEPH 100891 LTDActive - Proposal to Strike off- 10279434 - Incorporated on 14 July 2016 
- MR & MRS VAN LTD- 14374749 - Incorporated on 25 September 2022 
- HARPER MCKAY LIMITED- 07887132 - Incorporated on 20 December 2011 
- MCKAY HEATING LIMITEDDisolved- 04777495 - Dissolved on 4 June 2024 
- STEPHEN MCKAY LIMITED- NI045003 - Incorporated on 30 December 2002 
- MCKAY PARTNERS LIMITEDActive - Proposal to Strike off- 08493150 - Incorporated on 17 April 2013 
- MCKAY TECHNOLOGIES LIMITED- 11463118 - Incorporated on 13 July 2018 
- MCKAY DEVELOPMENTS LTD- 11854355 - Incorporated on 1 March 2019 
- SCOTT MCKAY LIMITED- 10119808 - Incorporated on 12 April 2016