| Igoo Group Ltd | Financial services | 2021 |
| IGS Care Ltd | Health & social care | 2024 |
| Igsd Care Limited | Health & social care | 2024 |
| Iguanas Producciones Ltd | Information & communication | 2017 |
| Ihfp Sports and Technologies Ltd | Wholesale & retail | 2026 |
| IHP Properties Ltd | Households | 2022 |
| Ihsan Centre CIC | Education | 2023 |
| Ihtisham UL HAQ Ltd Ltd | Wholesale & retail | 2025 |
| Iicms Liverpool Ltd | Professional & scientific | 2024 |
| Iidiagnostics Limited | Professional & scientific | 2005 |
| IIH Investment Limited | Other services | 2020 |
| Iitg Ltd | Information & communication | 2014 |
| IJ Decorating Services Ltd | Construction | 2020 |
| IJA Health Solution Limited | Public administration | 2025 |
| IJD Consultancy Limited | Health & social care | 2010 |
| IJD Electrical Ltd | Construction | 2018 |
| IJH Joinery Ltd | Manufacturing | 2018 |
| IJM 66 Ltd | Arts & recreation | 2026 |
| IJR Group Ltd | Wholesale & retail | 2025 |
| IJR Properties (NW) Ltd | Real estate | 2024 |
| IJW Cars Limited | Wholesale & retail | 2021 |
| IJW Properties Ltd | Real estate | 2022 |
| IK Liverpool Ltd | Hospitality | 2024 |
| IKB Transport Ltd | Transport & logistics | 2018 |
| IKD Fibre Ltd | Information & communication | 2023 |
| Ikigai HR Consulting Ltd | Administrative & support | 2023 |
| Ikkayees Ltd | Hospitality | 2022 |
| Ikogenia Limited | Real estate | 1986 |
| Ikon Liverpool Ltd | Hospitality | 2025 |
| Ikon PVT Limited | Health & social care | 2014 |
| Iksm Company Limited | Wholesale & retail | 2023 |
| IKW Consultancy Ltd | Administrative & support | 2025 |
| IL Forno Limited | Wholesale & retail | 2004 |
| IL Gusto Group Ltd | Hospitality | 2025 |
| IL Lungo Tipo Consultancy Limited | Professional & scientific | 2024 |
| Ilaj Ltd | Health & social care | 2023 |
| Ilankovinotha Properties Limited | Real estate | 2023 |
| ILC Coffee Limited | Hospitality | 2026 |
| ILC Leisure Ltd | Hospitality | 2018 |
| ILC Properties Ltd | Real estate | 2024 |
| Ilc-Nlp Ltd | Other services | 2010 |
| Ilerunwa Limited | Public administration | 2019 |
| Ilge Investments Ltd | Real estate | 2023 |
| Iliad (Dale Street) Limited | Real estate | 2002 |
| Iliad (Duke Street) Limited | Real estate | 2001 |
| Iliad (Grenville Street) Limited | Construction | 2016 |
| Iliad (Henry Street) Limited | Real estate | 2007 |
| Iliad (Liverpool) Limited | Real estate | 1997 |
| Iliad (Project Management) Limited | Real estate | 2010 |
| Iliad (Rotherham) Limited | Extraterritorial | 2006 |
| Iliad Consultancy Limited | Administrative & support | 2004 |
| Iliad David Mclean LLP | | 2002 |
| Iliad Homes Limited | Real estate | 2021 |
| Iliad Morrison Limited | Construction | 2000 |
| Iliad Parr Street Limited | Real estate | 2019 |
| Iliad Stanhope Street Limited | Real estate | 2025 |
| Ilina PVT Limited | Information & communication | 2025 |
| Ilium Retail Limited | Wholesale & retail | 2017 |
| Illingsworth Developments Ltd | Real estate | 2020 |
| Illtuds Ltd | Real estate | 2004 |
| ILM Creative Limited | Professional & scientific | 2025 |
| ILM Holdings Ltd | Financial services | 2026 |
| ILM Interiors Ltd | Construction | 2019 |
| Ilme UK Limited | Wholesale & retail | 1999 |
| Ilumina Resources Limited | Wholesale & retail | 2023 |
| ILW Limited | Transport & logistics | 2012 |
| IM E-Marketing Ltd | Professional & scientific | 2025 |
| IM Roofing Ltd | Construction | 2026 |
| IMA Brickwork Ltd | Construction | 2017 |
| Imac Regeneration Ltd | Professional & scientific | 2016 |
| Imac Support & Maintenance Services (NW) Ltd | Administrative & support | 2024 |
| Image Removals Ltd | Transport & logistics | 2019 |
| Imagine Car Parks Ltd | Other services | 2016 |
| Imagine English Ltd | Education | 2013 |
| Imagine IF Trust | Other services | 2012 |
| Imagineformby CIC | Professional & scientific | 2020 |
| Imajen Limited | Professional & scientific | 2015 |
| Imal Trading Limited | Agriculture & fishing | 2013 |
| Iman Merseyside Ltd | Real estate | 2018 |
| Imani Investments Ltd | Hospitality | 2026 |
| Imap Solutions Ltd | Professional & scientific | 2024 |
| Imari Ventures Ltd | Wholesale & retail | 2025 |
| IMB Clinic Ltd | Health & social care | 2025 |
| IMC10 Ltd | Arts & recreation | 2025 |
| Imech Industries Limited | Professional & scientific | 2018 |
| Imgenterprise Ltd | Wholesale & retail | 2024 |
| IML Pro Ltd | Financial services | 2010 |
| Immaculate Aesthetics Ltd | Other services | 2023 |
| Immaculate Makeup Ltd | Other services | 2019 |
| Immedi-Let Ltd | Real estate | 2010 |
| Immense Care Ltd | Health & social care | 2023 |
| Immense Dance & Musical Theatre School Ltd | Arts & recreation | 2021 |
| Immerscape Limited | Construction | 2021 |
| Immerser Ltd | Real estate | 2021 |
| Immobiliare Management Ltd | Real estate | 1999 |
| Immpro Ltd | Professional & scientific | 2022 |
| Imola Consulting Ltd | Professional & scientific | 2013 |
| Impact Agency Limited | Other services | 2023 |
| Impact Casting Limited | Administrative & support | 2007 |
| Impact Chauffeurs Ltd | Transport & logistics | 2020 |