| Hmrw Sales Limited | Wholesale & retail | 2025 |
| Holistic Solutions Limited | Manufacturing | 1996 |
| Holme Farm (Wettenhall) Management Company Limited | Real estate | 2006 |
| Holts Properties Limited | Real estate | 2023 |
| Holyroyd Management RTM Company Limited | Real estate | 2008 |
| Horner Christopher Consultants Ltd | Professional & scientific | 2015 |
| Horse Hound and Hunter Ltd | Wholesale & retail | 2023 |
| Hot Tubs Hire Ltd | Administrative & support | 2019 |
| House of Groom Ltd | Other services | 2025 |
| Housestr Ltd | Real estate | 2025 |
| Human Stuff Limited | Administrative & support | 2020 |
| Hurstville Consultancy Ltd | Professional & scientific | 2026 |
| HY. Activewear Ltd | Wholesale & retail | 2026 |
| I4PLUS Holdings Limited | Financial services | 2023 |
| I4PLUS Limited | Financial services | 2021 |
| IFIX4U Ltd | Manufacturing | 2020 |
| IG Sales Ltd | Wholesale & retail | 2023 |
| IGS MAN Ltd | Professional & scientific | 2021 |
| Immortals Grappling Academy Ltd | Arts & recreation | 2025 |
| Impact Inventories Ltd | Administrative & support | 2024 |
| IMS (Cheshire) Limited | Administrative & support | 2002 |
| IN Health Osteopathy Ltd | Health & social care | 2017 |
| IN Housing and Property Ltd | Real estate | 2026 |
| Indeco (UK) Limited | Wholesale & retail | 1986 |
| Independent Land Agent UK Ltd | Real estate | 2021 |
| Indigo Promotions Limited | Information & communication | 2003 |
| Inertia Labs Ltd | Information & communication | 2021 |
| Infinite Electrical NW Limited | Construction | 2021 |
| INK2GO Tattoo Removal Ltd | Other services | 2025 |
| Innovas Consulting Ltd | Extraterritorial | 2006 |
| Innovas Consulting Solutions Ltd | Professional & scientific | 2006 |
| Innovas Limited | Professional & scientific | 2006 |
| Innovative Living Construction Ltd | Construction | 2023 |
| Innovative Technologies Limited | Professional & scientific | 1997 |
| Insight 2 Impact Professional Coaching Ltd | Professional & scientific | 2025 |
| Invincibles Estates Limited | Real estate | 2019 |
| Iris Property Solutions Ltd | Real estate | 2022 |
| Ixco Limited | Professional & scientific | 2016 |
| J Bradford Consultants Ltd | Real estate | 2025 |
| J Brown Transport Ltd | Transport & logistics | 2026 |
| J C Properties Cheshire Limited | Real estate | 2025 |
| J D Bownes Limited | Wholesale & retail | 2012 |
| J Halliday Civil Engineering Limited | Construction | 2018 |
| J Hannon GAS Ltd | Construction | 2013 |
| J R Lucas Properties Limited | Real estate | 2023 |
| J. a. Lane Cleaning Services Ltd | Construction | 2007 |
| J. D. Doors Limited | Wholesale & retail | 2002 |
| J.Bowler Limited | Manufacturing | 2015 |
| J5 Investments Ltd | Real estate | 2024 |
| J>H>B>Cheshire Limited | Construction | 2025 |
| JA & ST Fencing Ltd | Construction | 2025 |
| Jacks Home Improvements Ltd | Construction | 2026 |
| JAM Racing Ltd | Administrative & support | 2026 |
| JAM Tracks Limited | Arts & recreation | 2020 |
| Jarmabox Limited | Wholesale & retail | 2019 |
| Jaxx Hair and Beauty Ltd | Other services | 2019 |
| JB Components and MOT Centre Ltd. | Wholesale & retail | 2008 |
| JC James Services Ltd | Professional & scientific | 2023 |
| JD Bownes Holdings Limited | Information & communication | 2018 |
| JD Homes & Renovations Ltd | Real estate | 2024 |
| JDF Coaching Ltd | Arts & recreation | 2023 |
| JDO Holdings Ltd | Financial services | 2025 |
| Jeswin Retail Limited | Wholesale & retail | 2021 |
| JH Construction Management Ltd | Construction | 2019 |
| Jiffy Packaging Company Limited | Manufacturing | 1964 |
| Jinks Show Team Ltd | Agriculture & fishing | 2014 |
| JJ Grounds Maintenance Services Ltd | Administrative & support | 2022 |
| JJE Electrical & Renewables Limited | Construction | 2026 |
| Jjlr Services Ltd | Wholesale & retail | 2026 |
| Jkmo Limited | Construction | 2016 |
| Jlphg Services Limited | Construction | 2016 |
| JLS Healthcare Ltd | Real estate | 2022 |
| JMC Genetics Limited | Extraterritorial | 2026 |
| John Bownes Limited | Wholesale & retail | 1979 |
| John Harding and SON Limited | Agriculture & fishing | 2012 |
| JP Morse Limited | Hospitality | 2023 |
| JPD Plumbing and Heating Limited | Construction | 2019 |
| Jspc Ltd | Professional & scientific | 2023 |
| Jungle Property Limited | Professional & scientific | 2017 |
| Jupiter Bidco Limited | Financial services | 2019 |
| Just the Ticket M.O.T's Ltd | Wholesale & retail | 2014 |
| Justgus Limited | Wholesale & retail | 2025 |
| JW Bowden Limited | Professional & scientific | 2004 |
| JWS Brickwork Limited | Construction | 2021 |
| Kaicy Ltd | Professional & scientific | 2024 |
| Kanvo Ltd | Wholesale & retail | 2020 |
| Kavanagh Software Ltd | Information & communication | 2023 |
| KB Property Ltd | Real estate | 2023 |
| KC Autos Accident Repair Centres Limited | Wholesale & retail | 2009 |
| KC Autos Group Limited | Professional & scientific | 2001 |
| KC Autos Northwich Limited | Wholesale & retail | 1972 |
| KC Autos Stockport Limited | Wholesale & retail | 2008 |
| KDM Properties Limited | Real estate | 2026 |
| Kelsall Football Club CIC | Arts & recreation | 2023 |
| Key Sales Group Ltd | Information & communication | 2024 |
| Keystone Consultancy and Investments Ltd | Real estate | 2022 |
| KG Burgers & Buns Limited | Hospitality | 2024 |
| Kids Kitchen Collective CIC | Administrative & support | 2018 |
| Kingfisher Housing and Regeneration Limited | Construction | 2024 |
| Kizhakkekattil Ltd | Real estate | 2025 |