| Gullbond Limited | Other services | 1983 |
| Gurgle & Burn Limited | Extraterritorial | 2023 |
| GWD Enterprises Limited | Financial services | 2010 |
| GWD International Limited | Wholesale & retail | 2021 |
| Hadeda Limited | Wholesale & retail | 2020 |
| Half Crown Holdings Ltd | Real estate | 2025 |
| Halo Poultry Sheds Ltd | Wholesale & retail | 2020 |
| Hamsard 3385 Limited | Administrative & support | 2015 |
| Handy Lettings Limited | Real estate | 2007 |
| Hannah Lewis Equestrian Services Ltd | Agriculture & fishing | 2019 |
| Hark Pictures Ltd | Information & communication | 2006 |
| Harshan (UK) Limited | Wholesale & retail | 2022 |
| Hartwood Properties Ltd | Real estate | 2018 |
| Hatch Accommodation Ltd | Real estate | 2019 |
| Hawk Information Services Limited | Extraterritorial | 2012 |
| Hayman-Joyce Limited | Real estate | 2022 |
| Hayman-Joyce Property Limited | Real estate | 2014 |
| HCH Property Limited | Real estate | 2014 |
| Heady Communications Limited | Professional & scientific | 2013 |
| Healthcare Consumables Limited | Wholesale & retail | 2025 |
| Heartsight Services CIC | Education | 2023 |
| Helen Timbrell Ltd | Professional & scientific | 2005 |
| Helical Levity Limited | Information & communication | 2015 |
| Henry Parsley Limited | Administrative & support | 2011 |
| Hicks Leys Limited | Construction | 2013 |
| Hiddenwell Group Limited | Financial services | 2025 |
| Hiddenwell Limited | Professional & scientific | 2014 |
| Hideaways Holidays Limited | Professional & scientific | 2006 |
| Hire a Hero | Administrative & support | 2010 |
| Hoar Cross Hall Limited | Hospitality | 2004 |
| Holmans Estates Limited | Real estate | 2010 |
| Holyhead Retail Park Management Company Limited | Households | 2016 |
| Honduras Wharf Limited | Construction | 2002 |
| Honey Stone Cafe Ltd | Hospitality | 2025 |
| Honeydale Limited | Wholesale & retail | 2015 |
| Honeyrock Physiotherapy Limited | Health & social care | 2025 |
| Horizonlife Limited | Real estate | 2009 |
| Hortus Group Ltd | Agriculture & fishing | 2025 |
| House of George Broadway Limited | Hospitality | 2023 |
| HT2RED Limited | Information & communication | 2024 |
| Hudson Lifestyle Solutions Ltd | Real estate | 2022 |
| Hylet Ltd | Real estate | 2022 |
| I.S.A.(Holdings)Limited | Professional & scientific | 1958 |
| Imogen Paine Limited | Wholesale & retail | 1987 |
| Include Deaf Ltd | Professional & scientific | 2025 |
| Insuco Intl Limited | Professional & scientific | 2009 |
| Intech Engineering Ltd | Professional & scientific | 2013 |
| Invisory Ltd | Professional & scientific | 2024 |
| J Eleven Limited | Professional & scientific | 2026 |
| J L G Agri Limited | Agriculture & fishing | 2014 |
| J L Waterhouse Limited | Real estate | 2002 |
| J P Bonner Building Ltd | Construction | 2008 |
| Jabberwocky Childrens Nursery Limited | Education | 2016 |
| James Coker Land Sales & Planning Ltd | Professional & scientific | 2016 |
| JCB Groundcare Limited | Manufacturing | 2003 |
| JEM Financial Ltd | Real estate | 2021 |
| Jenny Jones SHE Ltd | Professional & scientific | 2024 |
| Jiaxin Cheng Limited | Administrative & support | 2020 |
| John Bovill Limited | Administrative & support | 2018 |
| John Bryant & Sons Limited | Real estate | 1927 |
| Joint Surgeries Group LLP | | 2011 |
| JON Rust Ltd | Information & communication | 2023 |
| JOT SEO Ltd | Information & communication | 2025 |
| JUA Kali Events Limited | Hospitality | 2017 |
| Juley Piney Consulting Limited | Information & communication | 2014 |
| Just SO Dance Ltd | Arts & recreation | 2017 |
| JWS Cotswold (Contracting Division) Ltd | Construction | 2022 |
| JWS Cotswold (Developments Division) Ltd | Construction | 2017 |
| Katie Gibbons Ltd | Professional & scientific | 2021 |
| Kctutors Limited | Education | 2011 |
| KE Advanced Skin Care and Laser Clinic Ltd. | Other services | 2024 |
| Keighley Racing Limited | Arts & recreation | 2016 |
| Kensington & Chelsea Tutors Limited | Education | 2011 |
| Kenyons Fruit & VEG (Mark 2) Limited | Extraterritorial | 2022 |
| Kenyons Fruit & VEG Limited | Wholesale & retail | 2001 |
| Kera Forma Ltd | Professional & scientific | 2026 |
| Key Developments (Pebworth) Ltd | Construction | 2025 |
| Key Resourcing Limited | Administrative & support | 2022 |
| Kilimanyika Limited | Professional & scientific | 2008 |
| Kirkman Consultants Limited | Professional & scientific | 2025 |
| Kitamura Properties Limited | Real estate | 2021 |
| Kwai Property Limited | Real estate | 2024 |
| Larkswold Ltd | Arts & recreation | 2020 |
| LAST10 Ltd | Information & communication | 2023 |
| Lavira Clinic Ltd | Public administration | 2024 |
| Lawton Fire Consultancy Ltd | Public administration | 2013 |
| Lctaylor Properties Limited | Real estate | 2016 |
| Leads Guys Ltd | Professional & scientific | 2023 |
| Legacy Hardscaping Ltd | Administrative & support | 2024 |
| Leisure and Tower Developments Limited | Construction | 2007 |
| Leora Group Ltd | Administrative & support | 2025 |
| Lightning Road Ltd | Professional & scientific | 2026 |
| Little Bakery Company Ltd | Manufacturing | 2014 |
| Little Fish Enterprises Limited | Transport & logistics | 2013 |
| Littlest ELF Limited | Education | 2016 |
| Livehaul Driver Hire Ltd | Transport & logistics | 2026 |
| LKB Homes and Development Limited | Real estate | 2023 |
| Loader Creative Limited | Professional & scientific | 2010 |
| Logical Peak Limited | Information & communication | 2023 |
| Longborough Construction Limited | Construction | 1981 |