- T. CALLAGHAN LIMITED- 03017904 - Incorporated on 3 February 1995 
- ASHLEY CALLAGHAN LIMITED- 04556523 - Incorporated on 8 October 2002 
- CALLAGHAN AUTOMATION LIMITED- 08188095 - Incorporated on 22 August 2012 
- CALLAGHAN CONSTRUCTION LIMITED- 05669495 - Incorporated on 9 January 2006 
- CALLAGHAN CONSULTING LTDDisolved- 05852963 - Dissolved on 5 October 2021 
- CALLAGHAN INVEST LIMITEDDissolved- 07696166 - Dissolved on 19 August 2014 
- CALLAGHAN KITCHENS LIMITED- 04926386 - Incorporated on 8 October 2003 
- CALLAGHAN CARPENTRY LTDActive - Proposal to Strike off- 07429097 - Incorporated on 4 November 2010 
- HEALY CALLAGHAN LIMITED- 08054311 - Incorporated on 2 May 2012 
- CALLAGHAN PLANT LTD- 08911231 - Incorporated on 25 February 2014 
- CALLAGHAN CARE LIMITED- 09533130 - Incorporated on 9 April 2015 
- CALLAGHAN INDUSTRIES LIMITEDActive - Proposal to Strike off- 08737118 - Incorporated on 17 October 2013 
- CALLAGHAN CONTRACTS LTDDissolved- NI621616 - Dissolved on 1 May 2018 
- CALLAGHAN ELECT LTDDisolved- NI653533 - Dissolved on 15 March 2022 
- JOANIE CALLAGHAN LTD- 10109990 - Incorporated on 7 April 2016 
- CALLAGHAN DESIGN LTD.Active - Proposal to Strike off- 11197928 - Incorporated on 9 February 2018 
- CALLAGHAN PHOTOGRAPHY LTD- 10675575 - Incorporated on 17 March 2017 
- CALLAGHAN VENTURES LTDActive - Proposal to Strike off- SC567281 - Incorporated on 30 May 2017 
- CALLAGHAN GROUNDWORKS LTDActive - Proposal to Strike off- 10542324 - Incorporated on 29 December 2016 
- A CALLAGHAN LIMITEDActive - Proposal to Strike off- 10513737 - Incorporated on 7 December 2016