| Fairhaven Construction Limited | Construction | 2026 |
| Fairose Limited | Administrative & support | 2025 |
| Fairytale Entertainment Ltd | Arts & recreation | 2024 |
| Falcon Surveillance Ltd | Administrative & support | 2025 |
| Falconwood Estates (Blackheath) Ltd | Real estate | 2010 |
| Farai Investment Properties Ltd | Real estate | 2017 |
| Farringtons School Enterprises Limited | Administrative & support | 1992 |
| Fast Reset UK Ltd | Health & social care | 2025 |
| Fawcett Place Limited | Real estate | 2012 |
| Feather & Cork Ltd | Hospitality | 2025 |
| Feather Trading Ltd | Wholesale & retail | 2022 |
| Fellowes Design Co Ltd | Construction | 2025 |
| Fenderbom Films Ltd | Information & communication | 2019 |
| Fenn Integrated Services Limited | Arts & recreation | 2021 |
| Ferdia Properties Ltd | Administrative & support | 2016 |
| FIG & Journey Ltd | Hospitality | 2020 |
| Finalthird Ltd | Information & communication | 2022 |
| Finchwood Limited | Professional & scientific | 2025 |
| Finesound Limited | Construction | 2001 |
| Finsured Ltd | Information & communication | 2020 |
| Fiona Dawe Limited | Professional & scientific | 2014 |
| First Choice (Business) Accountancy Ltd | Professional & scientific | 2005 |
| First Choice Ltd | Professional & scientific | 2009 |
| Fish Union Holdings Limited | Financial services | 2024 |
| Fish Union Limited | Wholesale & retail | 2020 |
| Fishers Marine Parade Management Company Limited | Real estate | 2007 |
| Five Brothers Enterprise Ltd | Construction | 2016 |
| Five Hall View Limited | Real estate | 2019 |
| Flamingo Park Developments Ltd | Construction | 2019 |
| Floshi Ventures Limited | Professional & scientific | 2022 |
| Flow Culture CIC | Education | 2025 |
| Fluid Lighting Ltd | Information & communication | 2022 |
| Flying Moleman RC Models Ltd | Arts & recreation | 2022 |
| Focused Therapy Limited | Other services | 2017 |
| Food Republic Services Limited | Wholesale & retail | 2009 |
| Forces Solutions Limited | Financial services | 2017 |
| Forensic Computing Limited | Extraterritorial | 2003 |
| Foreshaw Building Services (Holdings) Limited | Financial services | 2007 |
| Foreshaw Building Services Limited | Construction | 1988 |
| Foreshaw Property LLP | | 2007 |
| Forest Cats Consultancy Ltd | Administrative & support | 2023 |
| Form Personal Training Ltd | Other services | 2022 |
| Forty Two Group Ltd | Real estate | 2024 |
| Founded Studio Ltd | Construction | 2010 |
| Four Hands Limited | Administrative & support | 2018 |
| FOX Bros (Bexley) Limited | Real estate | 1962 |
| FR & a Limited | Health & social care | 2012 |
| Freckle Creations Ltd | Professional & scientific | 2025 |
| Free Marc Ltd | Wholesale & retail | 2024 |
| Frensham Electrical Services Ltd | Construction | 2024 |
| Fresh Outta Ideas Ltd | Wholesale & retail | 2021 |
| Freshbuild Limited | Construction | 2013 |
| Friendly Circle Ltd | Real estate | 2018 |
| Fullbridge Ltd | Construction | 2024 |
| Futurefuel Developments Limited | Construction | 2018 |
| G & a Carpenters Limited | Construction | 2006 |
| G a Building Maintenance Ltd | Construction | 2012 |
| G Rutledge Limited | Construction | 2012 |
| G.I.C Solutions Ltd | Wholesale & retail | 2019 |
| Gaia Gardeners Limited | Arts & recreation | 2020 |
| Gamecast Ltd | Professional & scientific | 2021 |
| Garland Stone Limited | Hospitality | 2021 |
| Garmc Holdings Ltd | Other services | 2025 |
| Gary Lark Machine Services Limited | Construction | 2016 |
| Gateway Tax Limited | Information & communication | 2026 |
| GD Roofing and Lead Sheet Specialist Ltd | Construction | 2017 |
| Genben Investments Limited | Real estate | 2026 |
| Genesys Consultants Limited | Information & communication | 2003 |
| George Taverns Ltd | Hospitality | 2021 |
| Georgina FOX Consultancy Limited | Professional & scientific | 2017 |
| Gibson Facade Management Limited | Construction | 2020 |
| Gift Wrapped Limited | Administrative & support | 2007 |
| Gilroy and Penn Ltd | Professional & scientific | 2020 |
| Gingerspice Limited | Hospitality | 2020 |
| Girdlestone Deburgh Holdings Limited | Financial services | 2020 |
| GIZ Corporate Travel & Events Ltd | Wholesale & retail | 2018 |
| GJP Business Ventures Limited | Administrative & support | 2023 |
| GK White Holdings Limited | Real estate | 2021 |
| GKR Media Ltd | Professional & scientific | 2017 |
| Glavnex Ltd | Administrative & support | 2024 |
| Glebe FC Ltd | Arts & recreation | 2024 |
| Glitch Guild Ltd | Information & communication | 2025 |
| GLO Line Cleaning Ltd | Administrative & support | 2025 |
| Global Payments Consultancy Ltd | Professional & scientific | 2024 |
| Global Vehicles Direct Ltd | Transport & logistics | 2016 |
| Glow Foods Ltd | Wholesale & retail | 2023 |
| Gmsa Consulting Limited | Professional & scientific | 2021 |
| Go for Cleaning Ltd | Administrative & support | 2015 |
| Gold Canary Ff&E Ltd | Professional & scientific | 2023 |
| Gorse (Manor Park) Management Limited(The) | Households | 1984 |
| GP Motors Group Ltd | Wholesale & retail | 2023 |
| Grand Alliance Developments Ltd | Real estate | 2020 |
| Grand Credit Control Ltd | Financial services | 2023 |
| Grandcombin Ltd | Financial services | 2024 |
| Grassroots Academy Ltd | Education | 2025 |
| Gravel Way Limited | Real estate | 2017 |
| Gravion Services Ltd | Construction | 2025 |
| Gray and Grey Ltd. | Transport & logistics | 2021 |
| Great ASH (Management) Limited | Households | 1977 |
| Great Oaks Investments (UK) Limited | Real estate | 2012 |