- NICOLAS GALLAGHER LIMITED- 07377923 - Incorporated on 16 September 2010 
- GALLAGHER DOUGLAS LTD- 08127166 - Incorporated on 3 July 2012 
- THOMAS GALLAGHER LIMITED- 07905952 - Incorporated on 11 January 2012 
- DUNCAN GALLAGHER LIMITEDLiquidation- 06518428 - Incorporated on 29 February 2008 
- GALLAGHER ALMA LIMITED- 08073582 - Incorporated on 17 May 2012 
- GALLAGHER BATHGATE LIMITED- 03850431 - Incorporated on 29 September 1999 
- GALLAGHER DEVELOPMENTS LIMITED- 00937417 - Incorporated on 19 August 1968 
- GALLAGHER VENTURES LIMITED- 00704976 - Incorporated on 5 October 1961 
- GALLAGHER LEES LIMITED- 08274894 - Incorporated on 31 October 2012 
- COX GALLAGHER LIMITEDDissolved- 09672078 - Dissolved on 18 December 2018 
- GALLAGHER CYCLES LIMITEDActive - Proposal to Strike off- NI617579 - Incorporated on 27 March 2013 
- GALLAGHER WOOD LIMITEDDisolved- 09793782 - Dissolved on 10 August 2021 
- GALLAGHER BROTHERS LTDActive - Proposal to Strike off- SC524803 - Incorporated on 21 January 2016 
- GALLAGHER DESIGNS LTDDisolved- 10844929 - Dissolved on 18 February 2025 
- AM GALLAGHER LIMITEDDisolved- 11906778 - Dissolved on 1 November 2022 
- GALLAGHER BUILD LIMITED- 11976601 - Incorporated on 2 May 2019 
- JOHN GALLAGHER LIMITEDActive - Proposal to Strike off- 10339074 - Incorporated on 22 August 2016 
- GALLAGHER CONSULTANCY LTDActive - Proposal to Strike off- 10467651 - Incorporated on 8 November 2016 
- GALLAGHER REMOVALS LIMITEDDissolved- 12966087 - Dissolved on 29 June 2021 
- FARZANA GALLAGHER LIMITEDDisolved- 14310413 - Dissolved on 30 January 2024