| Figo Fago Ltd | Real estate | 2021 |
| Finding Forever Homes Ltd | Wholesale & retail | 2022 |
| First Choice Nurses Limited | Health & social care | 2015 |
| First Floor Properties Ltd | Real estate | 2024 |
| First Rate Cleaning Ltd | Administrative & support | 2014 |
| Fitzgrahams Limited | Professional & scientific | 2019 |
| Fitzgrahams Solicitors LLP | | 2008 |
| Flavoursense Limited | Hospitality | 2013 |
| FLINT2 Ltd | Professional & scientific | 2024 |
| Flipping Good Properties LLP | | 2016 |
| Flock Knitting Limited | Wholesale & retail | 2026 |
| Flossea Flowers Ltd | Wholesale & retail | 2024 |
| Floyd Rocks Limited | Real estate | 2017 |
| Floyd's Alive LLP | | 2021 |
| Food for Thought Limited | Health & social care | 2019 |
| Forage and Fleur Ltd | Wholesale & retail | 2022 |
| Forma Pizza Ltd | Hospitality | 2026 |
| Formula Moore Ltd | Real estate | 2021 |
| Fort Knight Invest Limited | Other services | 2018 |
| Foundrly Ltd | Information & communication | 2025 |
| Four Powis Square Brighton (Management) Limited | Real estate | 2007 |
| Fowleco Limited | Professional & scientific | 2001 |
| Fragrant Harbour Group Limited | Wholesale & retail | 2023 |
| Fragrant Harbour Logistics Ltd | Transport & logistics | 2024 |
| Frame of Sound Ltd | Professional & scientific | 2022 |
| Framework Business Consultancy Limited | Professional & scientific | 2007 |
| Francis Property & Estate Management Limited | Real estate | 2011 |
| Franklin and Mason Healthcare Limited | Public administration | 2026 |
| Fred and Alf's Gardening and Maintenance Services Ltd | Administrative & support | 2025 |
| Fresh Eyes Approach Limited | Administrative & support | 2010 |
| Freshonline Marketing Limited | Information & communication | 2009 |
| Frock UP Friday CIC | Other services | 2022 |
| Frontier Technical Services Ltd | Construction | 2015 |
| Frost Partnership Ltd | Administrative & support | 2018 |
| Fulcel Ltd | Real estate | 2025 |
| FULLY3D Ltd | Manufacturing | 2024 |
| FYP Media Ltd | Professional & scientific | 2025 |
| G.D.T (Hastings) Ltd | Real estate | 2020 |
| G.E.T Wealth Ltd | Professional & scientific | 2025 |
| G.T. Precision Limited | Extraterritorial | 1998 |
| G2FLOW Ltd | Professional & scientific | 2025 |
| Gaga Enterprises UK Ltd | Transport & logistics | 2020 |
| Galactic Estate Holdings Ltd | Administrative & support | 2018 |
| Galustian Ltd | Health & social care | 2014 |
| Game Shot Ltd | Arts & recreation | 2026 |
| Gandermill Limited | Households | 1979 |
| Garden Building Services South Ltd | Construction | 2022 |
| Gardening for Futures CIC | Agriculture & fishing | 2026 |
| GB Cool Clean Limited | Administrative & support | 2023 |
| GB Minifootball CIC | Arts & recreation | 2025 |
| Gbwillow Ltd | Wholesale & retail | 2018 |
| GCD Driving Services Ltd | Transport & logistics | 2025 |
| Genesis Kitchens & Bedrooms Ltd | Wholesale & retail | 2005 |
| Genflur Ltd | Professional & scientific | 2025 |
| Gensing Management Limited | Real estate | 2002 |
| Gensing Workers' Co-Operative Ltd | Professional & scientific | 2014 |
| GIA Care Holding Ltd | Financial services | 2021 |
| Gibbins Property (SE) Limited | Construction | 2025 |
| Give a Song CIC | Arts & recreation | 2022 |
| GKL Construction Ltd | Construction | 2023 |
| Glenisters Florist Ltd | Wholesale & retail | 2014 |
| Global Commodity Solutions Ltd | Information & communication | 2024 |
| Global Prospect Limited | Information & communication | 2010 |
| Goldem Ltd | Hospitality | 2022 |
| Goldeneye Developments Limited | Construction | 2015 |
| Goldeneye Investments Limited | Real estate | 2014 |
| Goldeneye Residential Properties Ltd | Real estate | 2025 |
| Good Life Animal Physiotherapy Limited | Professional & scientific | 2021 |
| Good Shepherds Investments Limited | Real estate | 2024 |
| Goodwin Contracting Services Limited | Professional & scientific | 2012 |
| GOT Opinions Ltd | Professional & scientific | 2025 |
| GP Electrical (South East) Ltd | Construction | 2015 |
| Grace O'Leary Limited | Professional & scientific | 2012 |
| Grange Court Freehold Group Limited | Real estate | 2019 |
| Gray Colour Ltd | Wholesale & retail | 2024 |
| Greedy Kitchens Ltd | Hospitality | 2017 |
| Green Violet Ltd | Arts & recreation | 2025 |
| Greenaer Energy Ltd | Construction | 2025 |
| Greenlooprecycling Ltd | Wholesale & retail | 2026 |
| Greenway Holidays Ltd | Hospitality | 2019 |
| Greenweld (S.E.) Limited | Construction | 2017 |
| Greenwell Tree Services Ltd | Agriculture & fishing | 2020 |
| Gridpro Ltd | Information & communication | 2025 |
| Grip Tease Ltd | Other services | 2021 |
| Groundscape (South East) Ltd. | Construction | 2018 |
| Groveall Limited | Wholesale & retail | 2024 |
| GRS (Grosvenor Re-Sale) Building Services Limited | Construction | 2019 |
| Grub Drop & Convenience Solutions Limited | Transport & logistics | 2019 |
| GT Building Ltd | Construction | 2021 |
| Gumushane Pizza Limited | Hospitality | 2019 |
| Gumzo Ltd | Manufacturing | 2025 |
| GUY Warren Consulting Ltd | Professional & scientific | 2025 |
| H Beswick Limited | Construction | 2020 |
| H'S Management Ltd | Hospitality | 2019 |
| Habitus Care Ltd | Health & social care | 2024 |
| Habitus Homecare Ltd | Health & social care | 2024 |
| Habitus Living Ltd | Other services | 2020 |
| Hailsham Court Limited | Households | 1998 |
| Hailsham Motoring Centre Limited | Wholesale & retail | 2018 |
| Halcyon Emporium Limited | Other services | 2019 |