| Imaan Services Limited | Wholesale & retail | 2024 |
| Imaara Collections Ltd | Wholesale & retail | 2025 |
| Imac Carpentry Ltd | Construction | 2013 |
| Imac Trading Ltd | Wholesale & retail | 2021 |
| Image Approvals Ltd | Information & communication | 2018 |
| Image Building Services Limited | Construction | 2005 |
| Image Flooring Retail Ltd | Other services | 2017 |
| Image Hair Studio Ltd | Other services | 2015 |
| Image Promotion (West-Mids) Limited | Manufacturing | 2018 |
| Image Staff Services Ltd | Administrative & support | 2025 |
| Imagecleaver Ltd | Information & communication | 2015 |
| Imagination of Alvechurch Ltd | Other services | 2018 |
| Imaginative Training Ltd | Information & communication | 2006 |
| Imagine Social Limited | Professional & scientific | 2026 |
| Imaging Ventures Ltd | Health & social care | 2023 |
| Imagodeiproductions Ltd | Health & social care | 2023 |
| Imaj Limited | Hospitality | 2013 |
| IMAJ2 Limited | Hospitality | 2015 |
| Imajin ME Beauty Ltd | Other services | 2020 |
| Imam Marine Services Ltd | Professional & scientific | 2025 |
| Imam Medical Services Ltd | Health & social care | 2020 |
| Imam Nafie Centre for Qur'Anic Studies Ltd | Administrative & support | 2017 |
| Imam Reza Cultural Centre Limited | Other services | 2005 |
| Iman Community & Activity Centre C.I.C. | Public administration | 2023 |
| Iman Housing Ltd | Real estate | 2016 |
| Iman Parcel Solutions Ltd | Transport & logistics | 2019 |
| Imani Academy Ltd | Education | 2017 |
| Imani's Bangladeshi Cuisine Limited | Hospitality | 2025 |
| Imani's Bangladeshi Restaurant Limited | Hospitality | 2022 |
| Imanlogic Digital Ltd | Professional & scientific | 2026 |
| Imara One Estates Limited | Real estate | 2026 |
| Imarah Properties Ltd | Real estate | 2026 |
| Imargir Cakes & Catering Ltd | Manufacturing | 2025 |
| Imartworldwide Ltd | Wholesale & retail | 2021 |
| Imazin BD Ltd | Real estate | 2023 |
| Imazin Limited | Health & social care | 2022 |
| Imber Limited | Real estate | 2025 |
| Imbs Solutions Ltd | Real estate | 2022 |
| IMC Pro Logistics (UK) Ltd | Transport & logistics | 2019 |
| Imci Professional Services Limited | Information & communication | 2016 |
| Imcmi Limited | Professional & scientific | 2022 |
| Imcoz Limited | Professional & scientific | 2012 |
| Imcueto Limited | Health & social care | 2018 |
| IMD Property Investments Limited | Real estate | 2019 |
| Imdav Ltd | Health & social care | 2010 |
| Imedia School | Education | 2012 |
| Imekan Limited | Information & communication | 2025 |
| Imend Tech Limited | Other services | 2019 |
| Imergo Ltd | Professional & scientific | 2015 |
| Imerja Limited | Information & communication | 1999 |
| Imeta Training and Solutions Ltd | Education | 2018 |
| Imex Bautec Limited | Administrative & support | 2009 |
| IMF Care Ltd | Health & social care | 2025 |
| IMG Group Limited | Wholesale & retail | 2018 |
| IMG Removals Limited | Transport & logistics | 2025 |
| Imgraphy Limited | Health & social care | 2024 |
| Imha Ltd | Information & communication | 2024 |
| Imhi Ltd | Information & communication | 2026 |
| Imhm Limited | Real estate | 2025 |
| IMI 2 LLP | | 2012 |
| IMI CIF Trustee Limited | Administrative & support | 2014 |
| IMI Components Limited | Professional & scientific | 1982 |
| IMI Deutschland Limited | Administrative & support | 2011 |
| IMI Euro Finance Limited | Administrative & support | 2012 |
| IMI Germany Limited | Professional & scientific | 2011 |
| IMI Group Limited | Professional & scientific | 2007 |
| IMI Kynoch Limited | Professional & scientific | 1962 |
| IMI Marston Limited | Professional & scientific | 1919 |
| IMI Overseas Investments Limited | Professional & scientific | 1925 |
| IMI Pensions Trust Limited | Financial services | 1970 |
| IMI Precision Engineering Limited | Wholesale & retail | 1982 |
| IMI Refiners Limited | Professional & scientific | 1917 |
| IMI Sweden Finance Limited | Administrative & support | 2010 |
| IMI Vision Limited | Administrative & support | 2002 |
| IMI Webber Limited | Manufacturing | 1979 |
| Imic Agency LLP | | 2006 |
| Imic Financial Services LLP | | 2006 |
| Imico Strategies Ltd | Information & communication | 2026 |
| IMJ Property Solutions Ltd | Households | 2024 |
| Imjiab Consulting Ltd | Professional & scientific | 2019 |
| Imjustproperties Ltd | Real estate | 2022 |
| Imma Mattresses Ltd | Manufacturing | 2025 |
| Immaculate Cleaning and Painting Ltd | Construction | 2025 |
| Immaculate Properties Limited | Real estate | 2020 |
| Immaculate Shine Facilities Management Ltd | Administrative & support | 2023 |
| Immediate Care Medical Services Limited | Health & social care | 2002 |
| Immediate Logistics Ltd | Health & social care | 2022 |
| Immense Claims and Hire Ltd | Wholesale & retail | 2025 |
| Immersay Ltd | Arts & recreation | 2021 |
| Immersible Ltd | Information & communication | 2017 |
| Immersive Limited | Information & communication | 2011 |
| Immersve UK Limited | Professional & scientific | 2024 |
| Immibay Ltd | Wholesale & retail | 2025 |
| Immigrants Yellow Pages Ltd | Information & communication | 2026 |
| Immigration Advice Service and Advocates Limited | Professional & scientific | 2023 |
| Immigration Barristers Direct Limited | Professional & scientific | 2010 |
| Immigration Law Consultants Limited | Professional & scientific | 1999 |
| Immigration Rights Solicitors Ltd | Professional & scientific | 2019 |
| Immigration Services Ltd | Administrative & support | 2017 |
| Immigration Wise Ltd | Professional & scientific | 2023 |