| Fulwell Capital Limited | Real estate | 2014 |
| Future WE Want Ltd | Administrative & support | 2014 |
| G.B. Display Limited | | 1982 |
| G1 Security and Management Limited | Extraterritorial | 2023 |
| Gary W Allen Roofing & Exteriors Limited | Construction | 2020 |
| Gatecroft Properties Limited | Real estate | 2007 |
| Gbjr Properties Limited | Real estate | 2024 |
| Ghib Investment Properties Limited | Real estate | 2018 |
| Gibbs Couch Flats Limited | Households | 2002 |
| Gilden Properties Limited | Real estate | 2026 |
| Global Black Tribe Ltd | Health & social care | 2020 |
| Golden Willow Ltd | Wholesale & retail | 2020 |
| Goldsmith Counselling and Mediation Service Ltd | Health & social care | 2014 |
| Good Chat Hub Ltd | Education | 2026 |
| Good Food Dining Ltd | Hospitality | 2024 |
| Good Things Group Limited | Wholesale & retail | 2019 |
| Goodnews Training Limited | Professional & scientific | 1992 |
| Granby Car Sales Limited | Wholesale & retail | 2002 |
| Graphical Green Ltd | Administrative & support | 2012 |
| Green's Lodge Holdings Limited | Financial services | 2021 |
| Green's Lodge Limited | Agriculture & fishing | 2021 |
| Gusto Italiano Limited | Hospitality | 2014 |
| H & J Longstaff Limited | Other services | 2007 |
| H.S.P. Financial Planning Limited | Financial services | 2003 |
| Haber-Dash Limited | Wholesale & retail | 2020 |
| Habitare Developments (NW) Limited | Construction | 2024 |
| Habitare Developments Limited | Real estate | 2018 |
| Habitare Investments Limited | Real estate | 2022 |
| Hadley Pressure Washers Ltd | Administrative & support | 2025 |
| Hajco 199 Limited | Wholesale & retail | 1997 |
| Halstead Associates Holdings Limited | Professional & scientific | 2021 |
| Hamaton (Europe) Limited | Extraterritorial | 2014 |
| Hamaton Limited | Wholesale & retail | 2014 |
| Hanley & Hindley Properties Limited | Construction | 2025 |
| Hanley Properties Limited | Real estate | 2020 |
| Harlech Petroleum Limited | | 1978 |
| Harveyblue Limited | Professional & scientific | 2012 |
| Hatch END Trading Co. Limited | | 1992 |
| Head Squared Aquatics (Construction) Limited | Construction | 2020 |
| Headonizm Hair Limited | Other services | 2007 |
| Healthy Yummies Limited | Manufacturing | 2018 |
| Herkiran Clinical Limited | Health & social care | 2025 |
| Herner & Co Limited | Administrative & support | 1990 |
| Hertfordshire Awpp Limited | Real estate | 2019 |
| HG Adventures Ltd | Education | 2017 |
| High Quality Home Care Ltd | Health & social care | 2017 |
| HLB Property Investments Limited | Real estate | 2019 |
| Hljr Properties Ltd | Real estate | 2024 |
| Holler Inspiration Limited | Education | 2019 |
| Hollybrook Estates Limited | Professional & scientific | 2015 |
| Home Comforts Services Limited | Health & social care | 2023 |
| Homebrook Developments Limited | Construction | 2020 |
| Homebrook Developments NO 2 Limited | Construction | 2021 |
| Homebrook Developments NO 3 Limited | Construction | 2021 |
| Houzz That Renovation Limited | Construction | 2021 |
| Hsjr Properties Limited | Real estate | 2025 |
| HSP Tax Limited | Professional & scientific | 1997 |
| Hutchinson MS Limited | Financial services | 2013 |
| Huynh & Black Limited | Professional & scientific | 2017 |
| I H Foods Limited | Manufacturing | 1992 |
| IAN K Haywood Surveying Ltd | Professional & scientific | 2025 |
| Icps Business Management Ltd | Education | 2019 |
| IG Professional Services Limited | Administrative & support | 2014 |
| Imagine Baby Limited | Health & social care | 2020 |
| Imperial Financial Planning Limited | Financial services | 2015 |
| In-Lane Traffic Management Solutions Ltd | Other services | 2022 |
| Indigo 46 LLP | | 2026 |
| Inspire Living Solutions Limited | Professional & scientific | 2022 |
| Instyle LED Limited | Manufacturing | 2013 |
| Integra Computing Limited | Information & communication | 2013 |
| Intuition Consultancy & Design Limited | Professional & scientific | 2018 |
| Irvine Close (Property Management) Limited | Extraterritorial | 1997 |
| Isolution Group Limited | Financial services | 2023 |
| Isolution Payments Limited | Information & communication | 2023 |
| Jacksons Garage (Leicester) Limited | Wholesale & retail | 1967 |
| James Tomkins Sportswear Limited | Professional & scientific | 2006 |
| Jamie Developments Limited | Real estate | 2021 |
| Janet Fashions Ltd | Manufacturing | 2013 |
| Jason Appel Limited | Professional & scientific | 2015 |
| JBS 14 Limited | Real estate | 2021 |
| JC9 Limited | Arts & recreation | 2025 |
| JCG Ltd | Hospitality | 2018 |
| JCH Food Services Limited | Manufacturing | 2023 |
| Jcmb Group Ltd | Wholesale & retail | 2021 |
| JDG Promotions Ltd | Other services | 2015 |
| JDG Rentals Limited | Real estate | 2022 |
| JDR Coaching Consultancy Limited | Professional & scientific | 2021 |
| Jerkys Caribbean Grill Ltd | Hospitality | 2020 |
| Jerselene Limited | Real estate | 1972 |
| JGB Services Ltd | Other services | 2023 |
| Jiang Management Limited | Real estate | 2020 |
| Jiang Property Management Limited | Real estate | 2020 |
| Jigsaw Arts Franchise Limited | Administrative & support | 2013 |
| JLH 2 Limited | Professional & scientific | 2023 |
| Johnnie Riscoe Golf Tournaments Limited | Other services | 1977 |
| Johnson Security Limited | Manufacturing | 1968 |
| JSH Professional Services Ltd | Administrative & support | 2025 |
| JSP Pixel Media Limited | Information & communication | 2013 |
| JUA June Limited | Wholesale & retail | 2020 |
| JWC (1947) Limited | | 1947 |