- ION AIR LTDDisolved- 15377866 - Dissolved on 3 June 2025 
- IONUL LTD- 15826119 - Incorporated on 8 July 2024 
- MAR-ION LTD- 16039068 - Incorporated on 24 October 2024 
- IONXO LTD- 16560454 - Incorporated on 3 July 2025 
- GEO&ION LTDDisolved- 15279830 - Dissolved on 22 April 2025 
- IONYA LTD- 15309374 - Incorporated on 27 November 2023 
- ION PAY LTD- 15380077 - Incorporated on 2 January 2024 
- ION INC LTD- SC413061 - Incorporated on 13 December 2011 
- IONOT LTDDisolved- SC571151 - Dissolved on 17 October 2023 
- ION.DAV LTDActive - Proposal to Strike off- 11724076 - Incorporated on 12 December 2018 
- IONAU LTDDisolved- 13374459 - Dissolved on 11 October 2022 
- IONEL&M LTDDisolved- 13965386 - Dissolved on 15 August 2023 
- IONIK LTD- 16225890 - Incorporated on 3 February 2025 
- MY EDUC8ION- 16287346 - Incorporated on 3 March 2025 
- IONIC LTD- 16506286 - Incorporated on 9 June 2025 
- IONET 2023 LTDDisolved- 02073278 - Dissolved on 31 December 2024 - Westway Farm, Bishop Sutton, Bristol, BS39 5XP 
- IONET LTDDissolved- 05760441 - Dissolved on 12 October 2010 
- T.IONUT LTDActive - Proposal to Strike off- 10282521 - Incorporated on 16 July 2016 
- IONUT R&B LTDDisolved- 13365309 - Dissolved on 27 June 2023 
- AIR ION LTDDisolved- 11975839 - Dissolved on 1 August 2023