| Iconic (NW) CIC | Arts & recreation | 2022 |
| Iconic Collective Ltd | Professional & scientific | 2019 |
| Iconic Management Ltd | Professional & scientific | 2010 |
| Iconic Venues Ltd | Hospitality | 2025 |
| Iconicholy Ltd | Wholesale & retail | 2024 |
| Icopify Ltd | Other services | 2020 |
| Icou Tech Ltd | Transport & logistics | 2018 |
| ICQ Consultancy Limited | Financial services | 2026 |
| Icrack Ltd | Wholesale & retail | 2025 |
| Icream and Donut Ltd | Hospitality | 2022 |
| Icsh Limited | Financial services | 2025 |
| ICT Solutions Limited | Information & communication | 2014 |
| ICU Group Limited | Information & communication | 2003 |
| Icuk Corporation Limited | Financial services | 2024 |
| Icuk Developing and Contracting Company Limited | Construction | 2025 |
| Icybaby Cosmetix Ltd | Wholesale & retail | 2024 |
| ID Engineering Ltd | Professional & scientific | 2023 |
| ID Financial Services Limited | Professional & scientific | 2023 |
| ID Fire and Security Systems Ltd | Administrative & support | 2022 |
| ID Flooring Ltd | Construction | 2019 |
| ID Forensics LLP | | 2024 |
| ID Investments Limited | Real estate | 2025 |
| ID Mechanical Services Ltd | Construction | 2019 |
| ID8 Insight Ltd | Professional & scientific | 2023 |
| Idaraetukudo Limited | Wholesale & retail | 2025 |
| IDC (NW) Ltd | Administrative & support | 2014 |
| Idcard Limited | Information & communication | 2003 |
| IDCC05 Limited | Hospitality | 2014 |
| IDD Invest Limited | Real estate | 2025 |
| Iddentity Ltd | Other services | 2020 |
| Iddon Holdings Ltd | Professional & scientific | 2015 |
| Idds Property Ltd | Real estate | 2025 |
| Idea Market Research Ltd | Real estate | 2016 |
| Ideaboxes Limited | Administrative & support | 2013 |
| Ideal 1 Limited | Construction | 2014 |
| Ideal Choices PVT Ltd | Wholesale & retail | 2026 |
| Ideal Contractors (NW) Limited | Construction | 2017 |
| Ideal Electrical Solutions Group Ltd | Construction | 2024 |
| Ideal Investment Partners Limited | Financial services | 2018 |
| Ideal Motor Company Ltd | Wholesale & retail | 2014 |
| Ideal Skin Clinic Limited | Other services | 2017 |
| Ident Creative Ltd | Professional & scientific | 2013 |
| IDG Minibuses Limited | Transport & logistics | 2023 |
| Idhr 1 Ltd | Financial services | 2022 |
| Idhr 2 Limited | Financial services | 2024 |
| IDM Asset Management Ltd | Real estate | 2024 |
| Idol by Cheryl Taylor Ltd | Other services | 2019 |
| IDR Steel Logistics Limited | Transport & logistics | 2014 |
| Idream Enterprise Ltd | Real estate | 2017 |
| Idrproductions Limited | Information & communication | 2026 |
| IE Engagement Limited | Professional & scientific | 2022 |
| IED Services Ltd | Extraterritorial | 2008 |
| Ielj Ltd | Financial services | 2025 |
| Ielj Property Ltd | Financial services | 2025 |
| IEM Management Limited | Water & waste | 2020 |
| IEP Property Developments Ltd | Real estate | 2019 |
| IF (Liverpool) Ltd | Hospitality | 2023 |
| IF 19 Ltd | Financial services | 2025 |
| IF Building Consultancy Limited | Professional & scientific | 2019 |
| IF Vehicles Ltd | Professional & scientific | 2018 |
| IF YOU Dont Know Dont Worry Limited | Professional & scientific | 2018 |
| IFA Services Ltd | Administrative & support | 2021 |
| IFC Solutions Ltd | Real estate | 2025 |
| IFC Trends Ltd | Manufacturing | 2015 |
| IFF Engineering Limited | Manufacturing | 2019 |
| Iffa INS Limited | Financial services | 2018 |
| IFG Pensions Limited | Administrative & support | 2003 |
| Ifgl Sipp Trustees Limited | Financial services | 2017 |
| Ifgl Ssas Trustees Limited | Financial services | 2017 |
| Ifix Egypt Ltd | Other services | 2025 |
| Ifix Smash Limited | Wholesale & retail | 2014 |
| Ifloat Crosby Limited | Other services | 2022 |
| IFS - Smaller Loans LP | | 2023 |
| Ifyjacs Limited | Administrative & support | 2025 |
| IG Business Group Ltd | Manufacturing | 2024 |
| IG Construction & Renovation Ltd | Construction | 2025 |
| IGA Medicare Ltd | Health & social care | 2022 |
| Igbo Community Association, Liverpool | Other services | 2018 |
| Igca 2013 Limited | Financial services | 2013 |
| Igca Limited | Financial services | 2000 |
| Igears Limited | Information & communication | 2018 |
| IGF Developments Limited | Construction | 2018 |
| IGG Distributor Ltd | Wholesale & retail | 2016 |
| Iglesia Renacer UK CIC | Education | 2017 |
| Iglobal Music Group Ltd | Information & communication | 2025 |
| Igloo Property Developments Ltd | Real estate | 2023 |
| Igloo Property Holdings Ltd | Financial services | 2025 |
| Igloo Property Lets Ltd | Real estate | 2024 |
| Ignis Energy UK Ltd | Construction | 2022 |
| Ignisium Limited | Professional & scientific | 2025 |
| Ignisium Vaso Limited | Professional & scientific | 2025 |
| Ignite and Nurture Ltd | Professional & scientific | 2026 |
| Ignite Engage CIC | Education | 2026 |
| Ignite Management Ltd | Administrative & support | 2022 |
| Ignite Neurodiversity CIC | Education | 2025 |
| Igniteiq Global Ltd | Information & communication | 2026 |
| Ignition EGM Limited | Professional & scientific | 2019 |
| Ignition M Marketing Ltd | Administrative & support | 2014 |
| Ignits Events Ltd | Administrative & support | 2026 |
| Ignnz Sida Road MAP Organisation Ltd | Information & communication | 2024 |