| Frontier Utility Limited | Extraterritorial | 2017 |
| Frost Breeze Ltd | Construction | 2023 |
| Frosts Bodyshop Ltd | Wholesale & retail | 1999 |
| Fruteria Limited | Wholesale & retail | 2019 |
| Fufa Decoration Ltd | Construction | 2025 |
| Full Frame Limited | Information & communication | 2020 |
| Full Moon 68 Limited | Administrative & support | 2023 |
| Full Throttle Coffee Ltd | Wholesale & retail | 2021 |
| Fullard & Crowe Property Development Ltd. | Construction | 2025 |
| Fuller Brook Limited | Financial services | 2018 |
| Fuller Leisure Holdings Limited | Financial services | 2024 |
| Fuller Leisure Limited | Wholesale & retail | 2003 |
| Fully Blessed Limited | Manufacturing | 2020 |
| Funky Dory Catering Ltd | Hospitality | 2025 |
| Funky Dory Events Essex Ltd | Arts & recreation | 2025 |
| Funky Dory Love Limited | Arts & recreation | 2019 |
| Funny Features Limited | Arts & recreation | 1975 |
| Fusion Consultancy Solutions Limited | Professional & scientific | 2021 |
| Fusion Wholesale Ltd | Wholesale & retail | 2023 |
| Future Mechanical Services Ltd | Construction | 2022 |
| Future Office IB Limited | Other services | 2009 |
| Future Projects FP Ltd | Construction | 2019 |
| Future Technology Consulting Limited | Information & communication | 2010 |
| Futures League Limited | Arts & recreation | 2023 |
| Futuresupportgroup Limited | Health & social care | 2025 |
| Fuzisbind Investments Limited | Real estate | 1963 |
| Fyaz Hospitality Ltd | Hospitality | 2024 |
| FZK Property Limited | Real estate | 2025 |
| G & S Waste Management Limited | Water & waste | 2012 |
| G - Living Limited | Administrative & support | 2016 |
| G F Bridgman Holdings Limited | Financial services | 2025 |
| G Georgiev Ltd. | Construction | 2010 |
| G M T Club Limited | Other services | 2015 |
| G P Cleaning and Property Services Limited | Administrative & support | 2013 |
| G Peddy Associates Limited | Professional & scientific | 2026 |
| G&D Contracts Limited | Construction | 2005 |
| G&S Plumbing and GAS Services Ltd | Construction | 2025 |
| G&T Nutrition Ltd | Wholesale & retail | 2013 |
| G&V PPF. Tint Wizards Ltd | Manufacturing | 2025 |
| G-Up Scaffolding Services Ltd | Construction | 2025 |
| G. & a. Tuck Limited | Real estate | 1924 |
| G22 Studios Ltd | Information & communication | 2019 |
| G7 Data Converged Solutions & Manpower Ltd | Information & communication | 2020 |
| Gadgetry One Ltd | Wholesale & retail | 2021 |
| Galactic Healthcare Group Ltd | Professional & scientific | 2025 |
| Galaktika Ltd | Construction | 2026 |
| Galaxia Solutions Limited | Real estate | 2023 |
| Galliard (Bexleyheath) Limited | Construction | 2024 |
| Galliard (Cheltenham) Limited | Construction | 1995 |
| Galliard (Gravesend) Limited | Construction | 2022 |
| Galliard (Ramsey) Limited | Construction | 2022 |
| Galliard (Southwark) Limited | Construction | 2004 |
| Galliard (Strand) Limited | Administrative & support | 2008 |
| Galliard Apsley EV (Kingsbury) Limited | Administrative & support | 2023 |
| Galliard Apsley EV Holdings Limited | Administrative & support | 2022 |
| Galliard Caldecotte Holdco Limited | Real estate | 2019 |
| Galliard Caldecotte Limited | Administrative & support | 2019 |
| Galliard CI LLP | | 2015 |
| Galliard Construction Limited | Construction | 1996 |
| Galliard Creative Limited | Arts & recreation | 1983 |
| Galliard Designs Limited | Administrative & support | 2024 |
| Galliard Developments Limited | Administrative & support | 2014 |
| Galliard East Grinstead Limited | Real estate | 2019 |
| Galliard Estates Limited | Construction | 2001 |
| Galliard Group Limited | Financial services | 2012 |
| Galliard Holdings Limited | Professional & scientific | 1997 |
| Galliard Homes (DM) Limited | Professional & scientific | 2023 |
| Galliard Homes (PP) Limited | Administrative & support | 2023 |
| Galliard Homes Bulgaria Limited | Real estate | 2018 |
| Galliard Homes Limited | Construction | 1987 |
| Galliard Hotels Limited | Construction | 2003 |
| Galliard Investments Limited | Financial services | 2019 |
| Galliard Limited | Administrative & support | 2013 |
| Galliard Remediation Limited | Administrative & support | 2025 |
| Galliard Residential Limited | Extraterritorial | 2020 |
| Galliard Spareco Limited | Real estate | 2019 |
| Galliard SUB4 Limited | Administrative & support | 2016 |
| Galliard Trading Limited | Administrative & support | 2012 |
| Galliard Wavensmere (Middleway) Limited | Construction | 2018 |
| Galliard@Home Limited | Real estate | 2010 |
| Galloway Corporate Services Limited | Professional & scientific | 2012 |
| Galloway Medical and Consultancy Services Ltd | Administrative & support | 2022 |
| Galostar Developments Limited | Construction | 1998 |
| Galostar Limited | Construction | 1994 |
| Galway Life Sciences Limited | Professional & scientific | 2011 |
| Gangstar Films Limited | Information & communication | 2025 |
| Gapsun Properties Limited | Real estate | 2014 |
| Garden Bench Productions Limited | Other services | 2010 |
| Garden Invest Ltd | Real estate | 2021 |
| Garratt Lane (Wandsworth) Residents Management Company Limited | Households | 2022 |
| Garriques Production Ltd | Professional & scientific | 2021 |
| Garula AI Limited | Information & communication | 2024 |
| Gary Miller Limited | Transport & logistics | 2024 |
| GAS and Taps Limited | Construction | 2025 |
| GAS Heating Zone Ltd | Construction | 2015 |
| Gates Operations Ltd | Administrative & support | 2026 |
| Gatev Ltd | Construction | 2013 |
| Gateway Care Services Limited | Health & social care | 2004 |
| Gaughan Academy Ltd | Wholesale & retail | 2023 |
| GB Scholars Ltd | Education | 2017 |