- DUGGAN SOLUTIONS LTDActive - Proposal to Strike off- 08567298 - Incorporated on 12 June 2013 
- NIGEL DUGGAN LIMITED- 09182277 - Incorporated on 19 August 2014 
- DUGGAN CREATIVE LIMITEDDisolved- 08544820 - Dissolved on 12 April 2022 
- DUGGAN GROUNDWORKERS LIMITEDActive - Proposal to Strike off- NI633774 - Incorporated on 22 September 2015 
- DAVE DUGGAN LIMITED- 08129004 - Incorporated on 3 July 2012 
- JOHN DUGGAN LIMITED- 05397583 - Incorporated on 17 March 2005 
- MARK DUGGAN LIMITED- 09350438 - Incorporated on 11 December 2014 
- VICTORIA DUGGAN LTDDisolved- 12786026 - Dissolved on 17 May 2022 
- J & G DUGGAN BUILDERS LTD- SC575545 - Incorporated on 6 September 2017 
- SUSANA RF LTD- 16345951 - Incorporated on 26 March 2025 
- DUGGAN PRESS LIMITEDDisolved- 08711105 - Dissolved on 3 October 2023 
- SMITH & DUGGAN LIMITED- 09226052 - Incorporated on 19 September 2014 
- DUGGAN ANDERSON LIMITEDDisolved- 12124757 - Dissolved on 6 June 2023 
- SUSANN SU LTD- 13652184 - Incorporated on 30 September 2021 
- WELDRICK DUGGAN LTDActive - Proposal to Strike off- 11150549 - Incorporated on 15 January 2018 
- M DUGGAN & SONS LIMITED- 07129081 - Incorporated on 19 January 2010 
- KATE DUGGAN LIMITED- 08647083 - Incorporated on 12 August 2013 
- PG DUGGAN HAULAGE LTDDisolved- 13408956 - Dissolved on 25 October 2022 
- DUGGAN BROS. LIMITED- 13311731 - Incorporated on 3 April 2021 
- DUGGAN TRANSPORT LTD- 03976180 - Incorporated on 19 April 2000