- ISI TRANS LTD- 16455271 - Incorporated on 17 May 2025 
- ISIS GOLD LTDDissolved- 07328517 - Dissolved on 12 November 2013 
- SS ISIGHT LTDActive - Proposal to Strike off- 09730964 - Incorporated on 13 August 2015 
- ISIS LIFE LTD- 09100468 - Incorporated on 24 June 2014 
- ISILLYS LTDActive - Proposal to Strike off- 09582885 - Incorporated on 9 May 2015 
- ISIK-KHAN LTD- 13737752 - Incorporated on 11 November 2021 
- ISIQALO. LTDDisolved- 13022233 - Dissolved on 8 October 2024 
- ISIGNS.IO LTD- 15437312 - Incorporated on 23 January 2024 
- MJ SCAFFOLDING (NORTH WEST) LIMITED- 06455567 - Incorporated on 17 December 2007 
- I S A IMRAN PROPERTIES LIMITEDActive - Proposal to Strike off- 10868096 - Incorporated on 17 July 2017 
- ISIGN CONSULTING LLPActive - Proposal to Strike off- OC415243 - Incorporated on 28 December 2016 
- ISIS DST (UK) LLP- OC369644 - Incorporated on 9 November 2011 
- ISI87 LIMITED- 07425354 - Incorporated on 1 November 2010 
- ISIGHT (NW) LTD- 09349970 - Incorporated on 10 December 2014 
- IVAN-ISIE LTDDisolved- 11560493 - Dissolved on 13 May 2025 
- EMRE ISIL LTD- 10763279 - Incorporated on 10 May 2017 
- ISIKLAR LTDDisolved- 14201521 - Dissolved on 5 December 2023 
- ISINGIR LTDDisolved- 14570796 - Dissolved on 11 June 2024 
- ISINVST LTDDisolved- 14379782 - Dissolved on 5 March 2024 
- ISIDORE LTD- 09611785 - Incorporated on 28 May 2015