- ION Z LTD- 10809571 - Incorporated on 8 June 2017 
- ION-X LTD- 10706815 - Incorporated on 4 April 2017 
- ION M LTDDisolved- 13994741 - Dissolved on 29 August 2023 
- ION D D G LTDDisolved- 14157337 - Dissolved on 14 November 2023 
- ION+ LTDDisolved- SC796375 - Dissolved on 7 May 2024 
- ION22 LTDDisolved- 14013464 - Dissolved on 5 September 2023 
- ION13 LTDDissolved- SC278899 - Dissolved on 20 May 2011 
- V. ION LTDActive - Proposal to Strike off- 12549546 - Incorporated on 7 April 2020 
- ION67 LTD- 13648537 - Incorporated on 28 September 2021 
- ION C&T LTDDisolved- 14265492 - Dissolved on 9 January 2024 
- IONELA RADUT LTDActive - Proposal to Strike off- 10977461 - Incorporated on 22 September 2017 
- ION M.G LTDActive - Proposal to Strike off- 10275598 - Incorporated on 13 July 2016 
- ION K LTDActive - Proposal to Strike off- 12027408 - Incorporated on 31 May 2019 
- ION4 LTDActive - Proposal to Strike off- SC405010 - Incorporated on 9 August 2011 
- ION++ LTD- 08427512 - Incorporated on 4 March 2013 
- ION L LTDDisolved- 14004314 - Dissolved on 29 August 2023 
- ANDRIAN'S SERVICES LTD- 08719026 - Incorporated on 4 October 2013 
- IONUT-ION HOBJILA LTDActive - Proposal to Strike off- 10315954 - Incorporated on 8 August 2016 
- PYRAMID TECHNICAL CONSULTANTS EUROPE LTD- 04802355 - Incorporated on 18 June 2003 
- ION ENERGI LTDDisolved- 14148842 - Dissolved on 5 March 2024