- MRS & MR LIMITED- 13803023 - Incorporated on 15 December 2021 
- PARATUS RESEARCH LIMITED- 08827332 - Incorporated on 30 December 2013 
- JOHNSTONE & ROBERTSON PLUMBING & HEATING SERVICES LTD- SC459713 - Incorporated on 20 September 2013 
- MR AND MRS P HANLON GROUP LIMITED- 10092065 - Incorporated on 31 March 2016 
- MR F G, MRS N K AND MR A J GAMMON LIMITED- 08665204 - Incorporated on 27 August 2013 
- JOHNSTON DEVELOPMENTS LIMITED- 02308505 - Incorporated on 24 October 1988 
- JOHNSTON SMILLIE LTD- SC277435 - Incorporated on 15 December 2004 
- CJX LIMITEDDissolved- SC242677 - Dissolved on 2 March 2017 
- EXCELMODELLING LIMITED- 07267475 - Incorporated on 27 May 2010 
- HARJOH LIMITED- 07982099 - Incorporated on 8 March 2012 
- HOLLAND & JOHNSTON LTD- 11763737 - Incorporated on 14 January 2019 
- HARRIET MOLL LTD- SC771121 - Incorporated on 31 May 2023 
- JOHNSTON'S HANDMADE TABLET LTD- SC587339 - Incorporated on 31 January 2018 
- XL JOHNSTONE LTDDisolved- 13997005 - Dissolved on 28 June 2022 
- DG JOHNSTONE LTDActive - Proposal to Strike off- 14056545 - Incorporated on 20 April 2022 
- XV JOHNSTONE LTDDisolved- 14119684 - Dissolved on 22 October 2024 
- ZJ JOHNSTONE LTDDisolved- 14126579 - Dissolved on 23 April 2024 
- MEL JOHNSTON LTDLiquidation- 06660583 - Incorporated on 30 July 2008 
- LYN JOHNSTON LTDDissolved- SC471714 - Dissolved on 7 August 2018 
- JOHNSTONEW LTDActive - Proposal to Strike off- SC455188 - Incorporated on 24 July 2013