| Ice Interior Solutions Limited | Construction | 2016 |
| Ice Property 19 Limited | Real estate | 2019 |
| Ice Scoop (Crossgates) Ltd | Hospitality | 2016 |
| Ice Scoop (Harrogate) Ltd | Hospitality | 2017 |
| Ice Scoop 1HY Ltd | Hospitality | 2022 |
| Ice Scoop Roundhay Ltd | Hospitality | 2025 |
| Ice Travel Group Limited | Information & communication | 2021 |
| Ice-Scoop UK Ltd | Hospitality | 2023 |
| Iceberg Cabin Limited | Construction | 2025 |
| Icel Holdings Ltd | Financial services | 2020 |
| Icelolly Bidco Limited | Financial services | 2013 |
| Icelolly Limited | Extraterritorial | 2005 |
| Icelolly Marketing Limited | Professional & scientific | 2005 |
| Icelolly Topco Limited | Financial services | 2013 |
| Icelolly.Co.Uk Limited | Extraterritorial | 2004 |
| Icelolly.Com Limited | Extraterritorial | 2000 |
| Icesign Limited | Professional & scientific | 2018 |
| Iceton Property Limited | Real estate | 2026 |
| ICF Bondmor Ltd | Construction | 2024 |
| Ichp Ltd | Hospitality | 2018 |
| Ickw Leeds Ltd | Arts & recreation | 2018 |
| Iclan Global Network Limited | Wholesale & retail | 2020 |
| Iclean Yorkshire Limited | Administrative & support | 2016 |
| Icloud Softech Limited | Information & communication | 2015 |
| ICO Property Ltd | Real estate | 2022 |
| Icon Capital Partners (Holdings) Ltd | Financial services | 2025 |
| Icon Courier Ltd | Transport & logistics | 2024 |
| Icon Properties Group Ltd | Real estate | 2025 |
| Icon Salons Limited | Other services | 2011 |
| Icon Traders Ltd | Wholesale & retail | 2025 |
| Icon!C Design Ltd | Professional & scientific | 2019 |
| Icona 10 Ltd | Real estate | 2021 |
| Icona 11 Ltd | Real estate | 2021 |
| Icona 12 Ltd | Real estate | 2021 |
| Icona 19 Ltd | Real estate | 2021 |
| Icona 22 Ltd | Real estate | 2021 |
| Icona 24 Ltd | Real estate | 2021 |
| Icona 25 Ltd | Real estate | 2021 |
| Icona 26 Ltd | Real estate | 2021 |
| Icona 27 Ltd | Real estate | 2021 |
| Icona 32 Ltd | Real estate | 2021 |
| Icona 7 Ltd | Real estate | 2021 |
| Icona 9 Ltd | Real estate | 2021 |
| Iconic Fayce Leeds Ltd | Other services | 2024 |
| Iconic Flooring (Leeds) Ltd | Construction | 2017 |
| Iconic Home Improvements Ltd | Construction | 2022 |
| Iconic Locks Ltd | Other services | 2020 |
| Iconic Minds Limited | Wholesale & retail | 2016 |
| Iconic Nails Ltd | Other services | 2024 |
| Iconic Renovation Ltd | Construction | 2024 |
| Iconic Roofing Services Ltd | Construction | 2026 |
| Iconic Signs Ltd | Manufacturing | 2025 |
| Iconic Smiles Ltd | Health & social care | 2026 |
| Iconik Investments Ltd | Real estate | 2024 |
| Iconinc LLP | | 2012 |
| Iconversions Limited | Manufacturing | 2019 |
| Iconveyancer Limited | Professional & scientific | 2009 |
| Icosa Gallery Ltd | Information & communication | 2021 |
| ICP Venture Holdings Ltd | Financial services | 2016 |
| ICS Tree Services Ltd | Administrative & support | 2011 |
| Icthus Housing Ltd | Real estate | 2017 |
| Icthus Properties Ltd | Administrative & support | 2017 |
| Ictus Consulting Ltd | Professional & scientific | 2022 |
| ICW North Holdings Ltd | Construction | 2024 |
| ICY Refrigerators Limited | Other services | 2019 |
| ID Assured Limited | Extraterritorial | 2012 |
| ID Consulting & Coaching Limited | Professional & scientific | 2011 |
| ID Realisations Limited | Information & communication | 2006 |
| ID Tech Solutions Ltd | Information & communication | 2019 |
| ID Town Planning Consultancy Limited | Administrative & support | 2004 |
| IDA Group Limited | Extraterritorial | 2024 |
| Idaa International Limited | Information & communication | 2023 |
| Idacs (UK) Ltd | Professional & scientific | 2013 |
| Ida’S Kitchen Limited | Hospitality | 2020 |
| Ideal 4345 Ltd | Construction | 2026 |
| Ideal Carpets and Furniture Limited | Wholesale & retail | 2022 |
| Ideal Centre Leeds Limited | Education | 2024 |
| Ideal Estates (Leeds) Ltd | Real estate | 2016 |
| Ideal Estates (Yorkshire) Ltd | Real estate | 2016 |
| Ideal Fisheries Limited | Hospitality | 2013 |
| Ideal Land & Property Limited | Professional & scientific | 2012 |
| Ideal Money Solutions Ltd | Professional & scientific | 2010 |
| Ideal Physio Ltd | Health & social care | 2026 |
| Ideal Price Ltd | Wholesale & retail | 2024 |
| Ideal Properties Leeds Ltd | Real estate | 2013 |
| Ideal Property Lets Ltd | Real estate | 2024 |
| Ideal Property Ltd | Real estate | 2015 |
| Idealdata Services Limited | Information & communication | 2016 |
| Ideas 2 Grow Limited | Professional & scientific | 2007 |
| Ideas Horsforth Ltd | Wholesale & retail | 2022 |
| Ideas Incorporated PVT Limited | Wholesale & retail | 2026 |
| Ideasintoweb Ltd | Information & communication | 2023 |
| Ideasmiths Digital Limited | Information & communication | 2018 |
| Ideasmiths LLP | | 2010 |
| Idella Atelier Ltd | Manufacturing | 2026 |
| Identical Holdings Limited | Real estate | 2020 |
| Idetec Ltd | Information & communication | 2023 |
| Idhl Intelligence Limited | Information & communication | 2022 |
| Idhl Properties Ltd | Construction | 2016 |
| Idhl Web Limited | Information & communication | 2022 |