| Freightnet (Handling) Limited | Transport & logistics | 2000 |
| Fremington Manor Care Ltd | Health & social care | 2023 |
| French Patisserie Limited | Wholesale & retail | 2021 |
| Fresh & Fine Mart Ltd | Wholesale & retail | 2025 |
| Fresh Burger Factory Ltd | Hospitality | 2016 |
| Fresh Engage Ltd | Professional & scientific | 2013 |
| Fresh Press Cleaners Ltd | Other services | 2023 |
| Freshton Residents Company Limited | Households | 1971 |
| Friends for Development | Other services | 2007 |
| Friendship Autos Ltd | Wholesale & retail | 2025 |
| Frigate Aviation Ltd | Wholesale & retail | 2020 |
| Fromscratch Food Ltd. | Hospitality | 2017 |
| Fromworks Digital Transformation Services Limited | Information & communication | 2023 |
| Frontdesk Software Ltd | Real estate | 2015 |
| FS Partners Limited | Administrative & support | 2023 |
| Fsummit Ltd | Professional & scientific | 2017 |
| Fudgy Limited | Hospitality | 2023 |
| Fujita Consulting Limited | Professional & scientific | 2020 |
| Fulbright Limited | Information & communication | 2011 |
| Full Circle Economics Limited | Professional & scientific | 2024 |
| Full Power UP Ltd | Wholesale & retail | 2025 |
| Full Spec Interiors Limited | Construction | 2007 |
| Full Tilt Studio Limited | Professional & scientific | 2025 |
| Fully Bossed Ltd | Administrative & support | 2021 |
| Fundman Limited | Financial services | 2019 |
| Funky FLY Music Ltd | Arts & recreation | 2016 |
| Funnelfit Ltd | Financial services | 2022 |
| Fusion Management Company (Kingston) Limited | Households | 2002 |
| Fusionarts Limited | Arts & recreation | 2004 |
| Futsung Britishlink Asia Resources Investments Ltd | Wholesale & retail | 2023 |
| Future 62 Ltd | Wholesale & retail | 2022 |
| Future Master Network Ltd | Information & communication | 2025 |
| Futureguard Investments Ltd | Financial services | 2026 |
| Futurplans Ltd | Real estate | 2023 |
| G & J ALL Weather Roofing Ltd | Construction | 2025 |
| G R Thwaites Building and Management Services Ltd | Construction | 2024 |
| G Williams Consulting Limited | Professional & scientific | 2021 |
| G&A Natural Ltd | Wholesale & retail | 2021 |
| G&H Film & Television Services Ltd | Manufacturing | 2012 |
| G.R.K. Residents Society Limited | Real estate | 1973 |
| G.S. Contracts Holdings Limited | Financial services | 2015 |
| G7 Construction Company Ltd | Construction | 2022 |
| G7 Ltd | Construction | 2006 |
| G7 Projects Plus Ltd | Construction | 2023 |
| Gabidens Ltd | Wholesale & retail | 2024 |
| Gable Court Design Limited | Professional & scientific | 2018 |
| Gablecot Ltd | Arts & recreation | 2017 |
| Gadfly Ltd | Information & communication | 2009 |
| Gadget Data Solutions Limited | Information & communication | 2011 |
| Galaxy ICT Consultancy Limited | Wholesale & retail | 2016 |
| Galbento Consulting Ltd | Professional & scientific | 2025 |
| Galway Hooker Brewery (UK) Limited | Wholesale & retail | 2023 |
| Galytix Limited | Information & communication | 2015 |
| Gamestory Ltd | Information & communication | 2024 |
| GAP Global Systems Ltd | Extraterritorial | 2000 |
| Garage Conversion Ideas Ltd | Construction | 2022 |
| Garden Artemis Limited | Wholesale & retail | 2026 |
| Garrett & Read Limited | Construction | 2013 |
| Garris Investments Limited | Financial services | 2020 |
| Gartland House Ltd | Information & communication | 2024 |
| Garton Property Group Investments Ltd | Real estate | 2021 |
| Garton Property Group Ltd | Financial services | 2021 |
| Gary Does Copy Ltd | Professional & scientific | 2024 |
| Gatehouse Close(New Malden)Residents Association Limited(The) | Households | 1965 |
| Gather Friend Ltd | Hospitality | 2023 |
| Gatton Pines Advisory Ltd | Professional & scientific | 2025 |
| Gavina Enterprise Limited | Wholesale & retail | 2014 |
| Gayathri News Box Limited | Wholesale & retail | 2023 |
| Gaze Consulting and Design Ltd | Information & communication | 2018 |
| GB Kundalini Yoga Festival | Other services | 2011 |
| GB London Limited | Professional & scientific | 2026 |
| GBO Trading Limited | Wholesale & retail | 2024 |
| GC Creative Productions Limited | Administrative & support | 2026 |
| GC9 Ltd | Professional & scientific | 2016 |
| GCP03MJP Ltd | Health & social care | 2021 |
| GD Legal Consulting Limited | Professional & scientific | 2018 |
| GDR Holdings Ltd | Hospitality | 2025 |
| GE Britannica Limited | Real estate | 2021 |
| Geckoscope Limited | Information & communication | 2025 |
| Geek Empire Limited | Information & communication | 2023 |
| Gelato Passione Limited | Manufacturing | 2020 |
| GEM Enterprise Ltd | Professional & scientific | 2012 |
| GEM Network Limited | Other services | 2026 |
| Gemini Thespian Limited | Other services | 2019 |
| Gemopps Limited | Health & social care | 2022 |
| GEN2 Productions Ltd | Arts & recreation | 2019 |
| Generalz Entertainment Limited | Information & communication | 2008 |
| Generate UK Limited | Information & communication | 2008 |
| Generis Enterprises Limited | Other services | 2022 |
| Generus Capital Ltd | Financial services | 2016 |
| Generus Properties Ltd | Real estate | 2024 |
| Genesis 247 Ltd | Extraterritorial | 2002 |
| Geneva Digital Solutions Limited | Information & communication | 2020 |
| Geneva Mews (Kingston-Upon-Thames) Management Limited | Households | 2000 |
| Gent Fitness Limited | Information & communication | 2017 |
| GEO Clothing Ltd | Wholesale & retail | 2025 |
| Geodesign Limited | Professional & scientific | 1987 |
| Geoff Chan Consulting Limited | Professional & scientific | 2018 |
| Geoff Crowther Architects Limited | Administrative & support | 2011 |
| Geoff White Media Ltd | Professional & scientific | 2025 |