| Functional Platforms Ltd | Information & communication | 2017 |
| Funny Bees Ltd | Hospitality | 2019 |
| Furzedown Enterprises Ltd | Real estate | 2014 |
| Fusion Feast Ltd | Hospitality | 2016 |
| Futura Health Limited | Health & social care | 2007 |
| Future Fleet Group Ltd | Transport & logistics | 2026 |
| Future Focus Sport Ltd | Education | 2025 |
| Future Leaders Day Nursery Limited | Other services | 2016 |
| Future Rise Promotions Ltd | Administrative & support | 2025 |
| Futureworks Education Ltd | Education | 2015 |
| Fyne Dezynes (UK) Ltd | Other services | 2022 |
| FZ Consultancy Ltd | Manufacturing | 2024 |
| G Associates Ltd | Professional & scientific | 2011 |
| G B Distribution Limited | Arts & recreation | 2001 |
| G L Tennis World Coaching Ltd | Arts & recreation | 2017 |
| G R Building & Decorating Ltd | Construction | 2020 |
| G&P Facades Limited | Construction | 2025 |
| G20 Investments Limited | Real estate | 2017 |
| G2Y Energy Services Ltd | Professional & scientific | 2017 |
| GAB Installations Ltd | Construction | 2014 |
| Gadget Beaver Limited | Wholesale & retail | 2011 |
| Gadlang UK Management Consultants Limited | Professional & scientific | 2017 |
| GAF Nector Limited | Transport & logistics | 2025 |
| Gail James Asset Management Ltd | Real estate | 2016 |
| Gaitan Ltd | Construction | 2015 |
| Gakk Properties Ltd | Real estate | 2022 |
| Galas Solutions Ltd | Information & communication | 2021 |
| Galpins Road Management Company Limited | Households | 1981 |
| Gamebased Training Ltd | Education | 2024 |
| Gamma X Solutions Limited | Administrative & support | 2020 |
| Garden of Goodness Limited | Wholesale & retail | 2025 |
| Garsam Ltd | Wholesale & retail | 2025 |
| Gates of Balkan Ltd | Administrative & support | 2026 |
| Gattaca Consulting Ltd | Other services | 2013 |
| GB Design Agency Ltd | Information & communication | 2022 |
| GB Healthcare Group Ltd | Health & social care | 2021 |
| GB Healthcare Hull Ltd | Health & social care | 2021 |
| GC Engelec Ltd | Wholesale & retail | 2023 |
| GCU Property Ltd | Real estate | 2022 |
| GDM18 Construction Ltd | Construction | 2023 |
| Gdnpropertygroup Ltd | Real estate | 2025 |
| GEA Hub Eood Ltd | Information & communication | 2026 |
| GELE2022 Ltd | Information & communication | 2022 |
| Gemdat.Org. Limited | Information & communication | 2012 |
| Gemini Property Holdings (Amberstone) Limited | Real estate | 2017 |
| Gemini Property Holdings (Brixton) Limited | Real estate | 2016 |
| Gemini Property Holdings (Foxley) Limited | Real estate | 2017 |
| Gemini Property Holdings (Group) Limited | Real estate | 2017 |
| Gemini Property Holdings (Rhianna) Limited | Real estate | 2018 |
| Gemini Property Holdings (UK) Limited | Real estate | 2015 |
| General Practice Insights Ltd | Health & social care | 2024 |
| Genesis Auto Body Works Ltd | Wholesale & retail | 2025 |
| Genesis Creations Limited Partnership | | 2020 |
| Genetic Progress Ltd | Education | 2018 |
| Genetic Success Ltd | Education | 2017 |
| Genie Building Ltd | Construction | 2022 |
| Genies Transport Limited | Transport & logistics | 2023 |
| Genius Suppliers Limited | Health & social care | 2010 |
| Genysys Global International Limited | Information & communication | 2011 |
| Genz Aura Store Ltd | Wholesale & retail | 2026 |
| Geoff Hutchins Limited | Administrative & support | 2012 |
| George Alexandru Dragoi Ltd | Manufacturing | 2021 |
| Gere Cars Ltd | Administrative & support | 2023 |
| Geremi Ltd | Real estate | 2023 |
| Gergina Services Limited | Administrative & support | 2021 |
| Gery Accounting Services Ltd | Professional & scientific | 2020 |
| GET Frank Ltd | Information & communication | 2019 |
| GET Houzd Ltd | Real estate | 2025 |
| Getting Brick Investments Limited | Real estate | 2019 |
| Gfrees Ltd | Wholesale & retail | 2024 |
| GFS Developers Limited | Information & communication | 2024 |
| GFS Motors Limited | Wholesale & retail | 2025 |
| GFS Real Estate Marketing UK Limited | Real estate | 2021 |
| GFS Security Limited | Administrative & support | 2023 |
| GG-067-501 Limited | Real estate | 2022 |
| GG-280-727 Limited | Real estate | 2023 |
| GG-692-189 Limited | Real estate | 2023 |
| GG-706-850 Limited | Real estate | 2021 |
| Gghp Ltd | Construction | 2026 |
| GH Drainage Solutions Ltd | Other services | 2017 |
| Ghatorphar Limited | Other services | 2023 |
| Gido Limited | Wholesale & retail | 2024 |
| Giftedhandrock Services Limited | Hospitality | 2024 |
| GIG ZK 2 Limited | Real estate | 2023 |
| GIG ZK Ltd | Real estate | 2020 |
| Gigglenest Studios Limited | Manufacturing | 2025 |
| Giimoshun Ltd | Information & communication | 2024 |
| Gilhooley UK Ltd T/A TG Loft Boarding Limited | Administrative & support | 2016 |
| GIN & Tonic Limited | Manufacturing | 2025 |
| Ginger Build Ltd | Construction | 2026 |
| Gios Haven Homes Ltd | Real estate | 2025 |
| Girls Talk CIC | Education | 2024 |
| Githu Group Ltd | Hospitality | 2024 |
| Give Cado Ltd | Wholesale & retail | 2025 |
| Gizmo FIX Ltd | Information & communication | 2022 |
| GK Accountant Ltd | Professional & scientific | 2022 |
| GK Capital Solutions Ltd | Water & waste | 2024 |
| GK Maternity Nannies Ltd | Health & social care | 2023 |
| GKS Cabling Ltd | Information & communication | 2023 |
| GKY Construction Ltd | Construction | 2018 |