| Inner City CIC | Administrative & support | 2025 |
| Inner City Holdings Ltd | Households | 2026 |
| Inner City Life | Hospitality | 2017 |
| Inner City Living Limited | Real estate | 2021 |
| Inner Dimensions Limited | Professional & scientific | 2002 |
| Inner London Developments Limited | Construction | 1999 |
| Inner Space Flooring Ltd | Other services | 2016 |
| Inner Tranquility Ltd | Health & social care | 2024 |
| Innerbuild Limited | Construction | 2014 |
| Innerscale Ltd | Real estate | 2025 |
| Innervate Health Limited | Health & social care | 2009 |
| Innervision Holdings Limited | Financial services | 2024 |
| Innervision KB Holdings Ltd | Financial services | 2024 |
| Innervision KB Ltd | Financial services | 2023 |
| Innerwise Limited | Administrative & support | 2013 |
| Innisfree Construction (Midlands) Limited | Construction | 2009 |
| Inno Admin Ltd | Professional & scientific | 2024 |
| Innogence Ltd | Professional & scientific | 2019 |
| Innometrics Services Limited | Wholesale & retail | 2025 |
| Innoo Ltd | Construction | 2016 |
| Innopros Ltd | Real estate | 2015 |
| Innotec Cctv Ltd | Administrative & support | 2025 |
| INNOV8 Gaming Limited | Manufacturing | 2017 |
| INNOV8 Igaming Limited | Wholesale & retail | 2023 |
| INNOV8 International Limited | Manufacturing | 2006 |
| INNOV8 Tech Ltd | Information & communication | 2022 |
| Innovare Digital Ltd | Wholesale & retail | 2020 |
| Innovaris Ltd | Professional & scientific | 2024 |
| Innovate Assist Ltd | Wholesale & retail | 2025 |
| Innovate Domiciliary Care Ltd | Health & social care | 2021 |
| Innovate Hire Solutions Ltd | Administrative & support | 2024 |
| Innovate Housing Ltd | Health & social care | 2017 |
| Innovate Interim Management Consultancy Ltd | Professional & scientific | 2019 |
| Innovate Medical Services Ltd | Health & social care | 2022 |
| Innovate Properties Limited | Construction | 2015 |
| Innovate Property Limited | Real estate | 2017 |
| Innovateshop Solutions Ltd | Wholesale & retail | 2025 |
| Innovating Inclusion Ltd | Professional & scientific | 2020 |
| Innovation 2 Solution Limited | Information & communication | 2023 |
| Innovation 4 Business Holdings Limited | Financial services | 2024 |
| Innovation Awards (Ottg) Limited | Extraterritorial | 2025 |
| Innovation Awards Ltd | Administrative & support | 2023 |
| Innovation Cart Ltd | Wholesale & retail | 2025 |
| Innovation Cashflow Services Ltd | Professional & scientific | 2020 |
| Innovation Consulting and Solutions Ltd | Information & communication | 2020 |
| Innovation Factory Limited | Information & communication | 2017 |
| Innovation Fleet Services Limited | Financial services | 1997 |
| Innovation in Disseminating Materials Technologies Ltd | Professional & scientific | 2024 |
| Innovation Research Ltd | Professional & scientific | 2019 |
| Innovation Search Ltd | Administrative & support | 2025 |
| Innovationfunnel Limited | Information & communication | 2025 |
| Innovationgrp Ltd | Professional & scientific | 2017 |
| Innovationist Limited | Administrative & support | 2011 |
| Innovations Care Limited | Health & social care | 2024 |
| Innovations Chamber Enterprise Limited | Professional & scientific | 2005 |
| Innovationworks Systems Ltd | Education | 2015 |
| Innovative Box Ltd | Wholesale & retail | 2024 |
| Innovative Cleaning Services Limited | Administrative & support | 2017 |
| Innovative Climate Experts Ltd | Construction | 2026 |
| Innovative Igloo Ltd | Information & communication | 2019 |
| Innovative Industrial Instruments Limited | Manufacturing | 2023 |
| Innovative Product Utility Ltd | Professional & scientific | 2025 |
| Innovative Project Management Limited | Information & communication | 2008 |
| Innovative Real Estate Limited | Real estate | 2017 |
| Innovative Security Solutions Limited | Administrative & support | 2012 |
| Innovatoire CIC | Administrative & support | 2024 |
| Innovedha Ltd | Information & communication | 2025 |
| Innoverts Limited | Wholesale & retail | 2006 |
| Innovitech Ltd | Manufacturing | 2018 |
| Innovyze Limited | Information & communication | 2009 |
| Innowaste Ltd | Water & waste | 2025 |
| Innoweb-Softsolutions Ltd | Information & communication | 2025 |
| Innoworks Limited | Real estate | 2020 |
| Innsalzachimmobilien Limited | Administrative & support | 2012 |
| Innsialvis Limited | Wholesale & retail | 2022 |
| Innvexia Ltd | Information & communication | 2025 |
| Innvotek Ltd | Information & communication | 2010 |
| Inosculum Demesne Ltd | Other services | 2026 |
| Inova Upata Limited | Wholesale & retail | 2025 |
| Inovape (Birmingham) Ltd | Wholesale & retail | 2020 |
| Inoventive Ltd | Information & communication | 2019 |
| Inovest Limited | Other services | 2022 |
| Inovicia Limited | Wholesale & retail | 2026 |
| Inpax Transport Solutions Ltd | Transport & logistics | 2025 |
| Inpharm Ltd | Health & social care | 2026 |
| Inphysio Ltd | Health & social care | 2022 |
| Inpsyt Psychology Limited | Health & social care | 2025 |
| Input Housing Ltd | Hospitality | 2018 |
| Input Output Media Limited | Information & communication | 2012 |
| Inqlude Fashion Ltd | Wholesale & retail | 2020 |
| Inquilab Consulting Ltd | Professional & scientific | 2022 |
| INR Midlands Limited | Construction | 2026 |
| Inreach (Birmingham) Limited | Construction | 2014 |
| INS Distributions Limited | Wholesale & retail | 2022 |
| Insaf Designer Ltd | Wholesale & retail | 2018 |
| Insaf Fabrics Bham Ltd | Wholesale & retail | 2019 |
| Insaf Halal Meat Ltd | Wholesale & retail | 2026 |
| Insafehands International Ltd | Financial services | 2025 |
| Insane Digital Ltd | Administrative & support | 2022 |
| Insani Limited | Wholesale & retail | 2023 |