| Ingipingi Limited | Real estate | 2011 |
| Ingle Music Distribution Inc Touch Print Services Ltd | Manufacturing | 2022 |
| Ingle Music Distribution Limited | Manufacturing | 2018 |
| Inglewood Interiors Ltd. | Wholesale & retail | 2016 |
| Inglow Group PC | | 2020 |
| Ingram Evans Care Limited | Professional & scientific | 2003 |
| Inhaus International Limited | Wholesale & retail | 1989 |
| Inhouse Digital Media Limited | Information & communication | 2024 |
| Ini-Edu Limited | Information & communication | 2025 |
| Inicook Services Ltd | Hospitality | 2025 |
| Inimitable Business Experience Ltd | Administrative & support | 2020 |
| Initative in Community Limited | Construction | 2022 |
| Initialize Holdings Limited | Real estate | 2021 |
| Initialize Ltd. | Administrative & support | 2009 |
| Injan CYF. | Information & communication | 2015 |
| INK Rock Ltd | Real estate | 2020 |
| Inknova Limited | Information & communication | 2025 |
| Inksfinity Tattoo Studio Ltd | Other services | 2026 |
| Inkspot Arts & Crafts Limited | Wholesale & retail | 2003 |
| Inkstant Ltd | Wholesale & retail | 2020 |
| Inkwane Ltd | Wholesale & retail | 2025 |
| Inline Group (UK) Limited | Manufacturing | 2019 |
| Inly Ltd | Professional & scientific | 2015 |
| Inmas Continental Stores Ltd | Hospitality | 2024 |
| Inmon Ltd | Information & communication | 2018 |
| Inmusic Ltd | Wholesale & retail | 2020 |
| Inmyelement CLO Ltd | Wholesale & retail | 2021 |
| Inn Care Limited | Health & social care | 2017 |
| Inn Global Ltd | Wholesale & retail | 2025 |
| Inn-Trepreneur (Marlborough) Ltd | Hospitality | 2017 |
| Inncognito Healthcare Limited | Health & social care | 2008 |
| Inndel Ltd | Information & communication | 2016 |
| Inner - CHI Osteopathy Ltd | Health & social care | 2024 |
| Inner Circle Morpheus Ltd | Financial services | 2024 |
| Inner Light of Ourselves Ltd | Health & social care | 2021 |
| Innerbix Group Limited | Administrative & support | 2025 |
| Innermost Secrets Limited | Health & social care | 2004 |
| Innervision Wellbeing Ltd | Information & communication | 2013 |
| Innes Family Butchers Ltd | Hospitality | 2009 |
| Innk Ltd | Wholesale & retail | 2018 |
| Inno Go Concepts Limited | Professional & scientific | 2024 |
| Inno Tech Galaxy Ltd | Wholesale & retail | 2025 |
| Innoai Holdings Limited | Information & communication | 2025 |
| Innobyte Technologies Limited | Information & communication | 2025 |
| Innodent Ltd | Health & social care | 2016 |
| Innoeffi UK Ltd | Wholesale & retail | 2025 |
| Innofitts Ltd | Information & communication | 2021 |
| Innogadget Hub Limited | Wholesale & retail | 2025 |
| Innomedi Limited | Wholesale & retail | 2014 |
| Innon Avenue Hotels Ltd | Real estate | 2018 |
| Innotech Fleet Maintenance Ltd | Wholesale & retail | 2022 |
| INNOV8 Facilities Management Ltd | Administrative & support | 2016 |
| INNOV8E Developments Ltd | Hospitality | 2024 |
| Innova Trading Ltd | Wholesale & retail | 2023 |
| Innovaedu Limited | Education | 2025 |
| Innovamind Ltd | Professional & scientific | 2025 |
| Innovate Analytics Limited | Information & communication | 2025 |
| Innovate Eco Limited | Construction | 2025 |
| Innovate Medics Ltd | Health & social care | 2025 |
| Innovate Online Medical Solutions Ltd. | Health & social care | 2020 |
| Innovate Orthoses Ltd | Health & social care | 2024 |
| Innovate Trust Ltd | Health & social care | 1990 |
| Innovateisle Tech Limited | Wholesale & retail | 2024 |
| Innovateq Limited | Information & communication | 2025 |
| Innovation 888 Ltd | Hospitality | 2025 |
| Innovation Master Ltd | Wholesale & retail | 2024 |
| Innovation Path Ltd | Wholesale & retail | 2025 |
| Innovation S.P. Limited | Other services | 2019 |
| Innovation Strategy Limited | Professional & scientific | 2016 |
| Innovation Technology and Trading Limited | Manufacturing | 2025 |
| Innovation Works UK Limited | Information & communication | 2008 |
| Innovative Fire & Security Limited | Manufacturing | 2008 |
| Innovative Health Care Solution International Ltd | Construction | 2025 |
| Innovative Learning Enterprise Limited | Manufacturing | 2018 |
| Innovative Plays Ltd | Wholesale & retail | 2019 |
| Innovawave Ltd | Information & communication | 2024 |
| Innovaze PHC Ltd | Transport & logistics | 2025 |
| Innoventos PLC | Professional & scientific | 2012 |
| Innovex Resource Group Limited | Administrative & support | 2024 |
| Innovexa Labs Ltd | Wholesale & retail | 2026 |
| Innovexit Limited | Information & communication | 2025 |
| Innovision Security Ltd | Other services | 2018 |
| Inntech Item Limited | Wholesale & retail | 2025 |
| Innventions Walton Limited | Hospitality | 2018 |
| Inotera Ltd | Wholesale & retail | 2025 |
| Inova Services and Care Ltd | Wholesale & retail | 2025 |
| Inova Sofa Home Limited | Other services | 2026 |
| Inovara Inc Ltd | Information & communication | 2025 |
| Inovatt Limited | Other services | 2022 |
| Inp-Ml-Jk Ltd | Professional & scientific | 2015 |
| Inprofile Marketing Limited | Professional & scientific | 2011 |
| Inret-Consulting Ltd | Water & waste | 2019 |
| Ins-Prod Ltd | Wholesale & retail | 2020 |
| Insas Beauty Limited | Other services | 2024 |
| Inscape Design and Consultancy Limited | Extraterritorial | 2020 |
| Insect Detection Limited | Professional & scientific | 2019 |
| Inselberg Limited | Manufacturing | 2024 |
| Insequens Ltd | Other services | 2019 |
| Inside Access Ltd | Construction | 2019 |
| Inside JOB Post Production Ltd | Information & communication | 2016 |