| Impact Pro Ltd | Professional & scientific | 2020 |
| Impactech Ltd | Wholesale & retail | 2026 |
| Impactedge Consulting Ltd | Information & communication | 2025 |
| Impakt Housing & Support Ltd | Wholesale & retail | 1989 |
| Impakt Property and Maintenance Limited | Construction | 2022 |
| Imperial Build Cleaners Limited | Administrative & support | 2004 |
| Imperial Health Group Ltd | Health & social care | 2025 |
| Imperial Select Recruitment Ltd | Administrative & support | 2022 |
| Imperial Trade & Interim Limited | Professional & scientific | 2013 |
| Imperial Workforce Solutions Limited | Administrative & support | 2003 |
| Imperivm Ltd | Wholesale & retail | 2020 |
| Impi Limited | Real estate | 2003 |
| Impressions Gatesngrills Limited | Other services | 2018 |
| Impressive Homes Limited | Real estate | 2018 |
| Improve Business Performance Ltd | Professional & scientific | 2022 |
| Impulse Media Productions Ltd | Professional & scientific | 2021 |
| Impulse Sport Limited | Manufacturing | 2020 |
| Imsl Limited | Financial services | 2000 |
| Imsolutions Holdings Limited | Professional & scientific | 2019 |
| Imsomnos Ltd | Health & social care | 2019 |
| IN a Pickle (Bedford) Limited | Extraterritorial | 2015 |
| IN Every Season CIC | Arts & recreation | 2024 |
| IN the Clinch Limited | Arts & recreation | 2025 |
| In-Focus Studio Ltd | Professional & scientific | 2023 |
| In-House Consultants Limited | Professional & scientific | 2007 |
| In.Style.Bedford Ltd | Other services | 2021 |
| IN2 Electrical Ltd | Construction | 2016 |
| IN2 Plumbing Limited | Administrative & support | 2017 |
| IN2BEATS | Information & communication | 2010 |
| IN2DAB Ltd | Information & communication | 2022 |
| IN2LEISURE Limited | Arts & recreation | 2009 |
| INA Properties Limited | Construction | 2019 |
| Incident Management Solutions Limited | Professional & scientific | 2006 |
| Inclusion Fitness Ltd | Arts & recreation | 2024 |
| Inclusive Performing Arts CIC | Arts & recreation | 2025 |
| Independent Mortgage Advice Bureau (Cambridge) Ltd | Financial services | 2019 |
| Independent Roof & Building Surveys Ltd | Professional & scientific | 2026 |
| India Holdings Ltd | Real estate | 2024 |
| Indian Lodge (Balti) Ltd | Hospitality | 2019 |
| Indie.Climate.Acts Ltd | Professional & scientific | 2022 |
| Indigo Holistic Therapies Ltd | Health & social care | 2017 |
| Indigo Properties Limited | Real estate | 1997 |
| Indira' S Tasty Chicken Ltd | Hospitality | 2018 |
| Individual Cars Ltd | Wholesale & retail | 2021 |
| Indo British Business Forum UK Limited | Professional & scientific | 2021 |
| Indoor Bowling Acquisitions Limited | Professional & scientific | 2014 |
| Indoor Bowling Equity Limited | Professional & scientific | 2015 |
| Indra Narine Limited | Health & social care | 2016 |
| Indus Paradise Limited | Administrative & support | 2017 |
| Induscheme Limited | Real estate | 2013 |
| Industrial Abseiling Ltd | Construction | 2009 |
| Industrial Electrical UK Limited | Construction | 2025 |
| Industrial Surgical & Scientific Limited | | 1985 |
| Indy & Kent Collections Limited | Wholesale & retail | 2023 |
| Ineko Home Limited | Professional & scientific | 2014 |
| Inet Limited | Professional & scientific | 2015 |
| Infinitative Limited | Information & communication | 2024 |
| Infinite Beauty Academy Ltd | Education | 2022 |
| Infinite Beauty Therapy Ltd | Other services | 2021 |
| Infinite Spirit Creations Ltd. | Professional & scientific | 2021 |
| Infinitea Beds Ltd | Real estate | 2021 |
| Infinito Holdings Ltd | Administrative & support | 2018 |
| Infinito Properties Ltd | Real estate | 2023 |
| Infinity Design Limited | Manufacturing | 2009 |
| Infinity Entertainment Bedford Ltd | Hospitality | 2026 |
| Infinity EVO Ltd | Administrative & support | 2013 |
| Infinity Lets Limited | Real estate | 2022 |
| Infinity MED Ltd | Health & social care | 2021 |
| Infinity Power Holdings Limited | Real estate | 2021 |
| Infinity Property Acquisitions Ltd | Real estate | 2025 |
| Infinity Real Estate Limited | Real estate | 2018 |
| Infinity Secure Solutions Ltd | Administrative & support | 2020 |
| Info Tech Installations Limited | Information & communication | 2009 |
| Infopad Ltd | Information & communication | 2011 |
| Inform Business Services Ltd. | Professional & scientific | 2009 |
| Information Storage Solutions Limited | Information & communication | 1995 |
| Infotech 360 Ltd | Information & communication | 2025 |
| Infotopia Limited | Information & communication | 2024 |
| Infoweb Solutions Limited | Information & communication | 2010 |
| Ingenivis Limited | Information & communication | 2024 |
| Ingredient Batching Systems Ltd | Professional & scientific | 2013 |
| Initial C Limited | Information & communication | 2017 |
| Initial Mortgage Solutions Ltd | Financial services | 2022 |
| Injury & Medical Report Ltd | Other services | 2018 |
| INK Collective 77 Ltd | Other services | 2025 |
| INK Free Skin Ltd | Other services | 2023 |
| INK Supplies Limited | Wholesale & retail | 2024 |
| Inline Risk Solutions Ltd | Administrative & support | 2017 |
| Inline Risk Solutions Technologies Ltd | Information & communication | 2025 |
| Inmatrans Ltd | Transport & logistics | 2024 |
| Inn - Asia Dining Ltd | Hospitality | 2016 |
| Inner Piece Psychotherapy Ltd | Health & social care | 2019 |
| Inner Plastering Solutions Ltd | Construction | 2019 |
| Innerchrome Limited | Extraterritorial | 1998 |
| Innosee Ltd | Professional & scientific | 2025 |
| Innotech Recruitment Ltd | Administrative & support | 2024 |
| INNOV8 Plus Ltd | Administrative & support | 2014 |
| Innova Management Company Limited | Other services | 2003 |
| Innovate IT Services Ltd | Information & communication | 2022 |
| Innovation Medical Devices Limited | Professional & scientific | 2018 |