- TRIGON SNACKS LIMITEDLiquidation- 03147034 - Dissolved on 4 December 2020 
- TRIGON ENGINEERING LIMITEDDissolved- 01013053 - Dissolved on 16 March 2010 
- TRIGON FINANCIAL LIMITEDDissolved- 03551080 - Dissolved on 29 January 2013 
- TRIGON CAMBRIDGE LIMITEDDisolved- 02686131 - Dissolved on 14 June 2022 
- TRIGON ASSOCIATES LIMITED- 09402153 - Incorporated on 22 January 2015 
- TRIGON RECRUITMENT LIMITED- 12734859 - Incorporated on 10 July 2020 
- TRIGON ENGINEERING LIMITED- 16162364 - Incorporated on 3 January 2025 
- TRIGON WORKS LIMITED- 16514197 - Incorporated on 12 June 2025 
- TRIGON SERVICES LTD- 11785704 - Incorporated on 24 January 2019 
- TRIGON SELECT LTD- 08905483 - Incorporated on 20 February 2014 
- THE HEIGHTS HOLDINGS LIMITEDDisolved- 09268310 - Dissolved on 28 March 2023 
- TRIGON EVENTS LTDActive - Proposal to Strike off- 12099448 - Incorporated on 12 July 2019 
- TRIGON PARTNERS LLP- OC325412 - Incorporated on 18 January 2007 
- TRIGON SHIPPING LTDDisolved- 14739988 - Dissolved on 15 April 2025 
- TRIGONOMICS LIMITEDDissolved- 06413497 - Dissolved on 27 November 2018 
- TRIGONE DESIGN LTDDissolved- 09376577 - Dissolved on 23 October 2018 
- DIGITAL TRIGON LTDDisolved- 13491695 - Dissolved on 10 June 2025 
- TRIGON FITNESS LTD- NI684546 - Incorporated on 20 December 2021 
- TRIGON FISH FARM LIMITEDActive - Proposal to Strike off- 07359924 - Incorporated on 27 August 2010 
- TRIGON HEALTHCARE LTD- 15433613 - Incorporated on 23 January 2024