| EX Officina Limited | Information & communication | 2022 |
| F S Moss Limited | Manufacturing | 2024 |
| F W Projects Limited | Hospitality | 2003 |
| F&B Design Studio Ltd | Professional & scientific | 2025 |
| Fabulous Floors (BN6) Ltd | Construction | 2011 |
| Fabulous Floors (Sussex) Limited | Transport & logistics | 2003 |
| Faithful Films Ltd | Information & communication | 2022 |
| Falk & KIA Limited | Health & social care | 2024 |
| Fathom Projects Ltd | Manufacturing | 2013 |
| Feel Better Ltd | Manufacturing | 2026 |
| FFF LEO Peters Limited | Arts & recreation | 2025 |
| Fielddaily Limited | Administrative & support | 1998 |
| Fika Bakery Ltd | Manufacturing | 2023 |
| Fika Services Ltd | Hospitality | 2026 |
| FIN Films Limited | Information & communication | 2006 |
| Finsbury Shipping Ltd | Other services | 2017 |
| Firsland Enterprises Ltd | Financial services | 2024 |
| Firsland Park Cafe Ltd | Hospitality | 2026 |
| First Fire Training Ltd | Other services | 2013 |
| First Natural Brands Ltd | Manufacturing | 1984 |
| First Natural Limited | Manufacturing | 2006 |
| Fitzjohn Court Limited | Households | 1994 |
| Five Missions More Ltd. | Information & communication | 2005 |
| Fiveways Sussex Limited | Arts & recreation | 2018 |
| Flex-It Projects Limited | Information & communication | 2017 |
| FLO Paul Podiatry Limited | Health & social care | 2023 |
| Floryco Ltd | Real estate | 2025 |
| FLY DMC Ltd | Education | 2025 |
| Focal Dental Ltd | Health & social care | 2018 |
| Forensicode Ltd | Information & communication | 2025 |
| Forest Designs Joinery Ltd | Manufacturing | 2023 |
| Forte Translation Services Ltd | Professional & scientific | 2003 |
| Fortytoo Limited | Financial services | 2025 |
| Foster Homes Services Ltd | Real estate | 2026 |
| Foster-Taylor Limited | Agriculture & fishing | 2017 |
| Four Point Properties Ltd | Real estate | 2020 |
| Franchise Management Services Ltd | Manufacturing | 2019 |
| Frankel Renovations Group Ltd | Real estate | 2026 |
| Frankland Village Store Ltd | Wholesale & retail | 2023 |
| Franklynworks Ltd | Professional & scientific | 2024 |
| Frayed Edges Ltd | Other services | 2026 |
| Freestar Property Limited | Real estate | 2017 |
| Frequency Ratio Limited | Arts & recreation | 2017 |
| Fruit Box Productions Limited | Information & communication | 2024 |
| Fuller Rogers Management Limited | Professional & scientific | 2019 |
| Fullers Commerce LLP | | 2012 |
| Fullers Commerce Southern Limited | Households | 2017 |
| Fullers Consulting Ltd | Other services | 2019 |
| FUN With Talking Limited | Health & social care | 2021 |
| Functional Fusion Ltd | Other services | 2025 |
| Fung and Bedford Limited | Manufacturing | 2017 |
| Funny That Ltd | Arts & recreation | 2020 |
| G & E Developments Limited | Construction | 2025 |
| G & M Investments (Sussex) Ltd | Real estate | 2017 |
| G LEE & Sons Ltd | Agriculture & fishing | 2023 |
| Gaia Active Limited | Information & communication | 2007 |
| Gaia Games CIC | Health & social care | 2026 |
| Gaialens Ltd | Information & communication | 2021 |
| Galahad Advisers and Associates Ltd | Financial services | 2026 |
| Galahad Advisory Limited | Financial services | 2003 |
| Galleria Bistro Ltd | Hospitality | 2022 |
| Garden Sage Limited | Wholesale & retail | 2015 |
| Garden Thyme Plants Limited | Wholesale & retail | 2021 |
| Gardens and Aquatics Ltd | Administrative & support | 2026 |
| Gardens of Eden Limited | Agriculture & fishing | 2022 |
| Gardenworks Design (Sussex) Ltd | Administrative & support | 2017 |
| Gatwick Promotions Ltd | Other services | 2018 |
| Gbvi Ltd | Manufacturing | 2011 |
| GEO Environmental Services Limited | Professional & scientific | 1996 |
| George Franc Limited | Wholesale & retail | 1995 |
| George Machan Limited | Extraterritorial | 2011 |
| GET Fit Trainer Ltd | Arts & recreation | 2017 |
| Giant International Limited | Administrative & support | 1998 |
| Giles Turner Financial Planning Limited | Financial services | 2024 |
| Gingerman Limited | Hospitality | 2005 |
| Gladstone Motorcycles Limited | Wholesale & retail | 2013 |
| Glenarm Sussex Ltd | Water & waste | 2016 |
| GLO by Anabel Ltd | Other services | 2021 |
| Global Aerospace Trading Limited | Professional & scientific | 2017 |
| Global Data Processing Limited | Information & communication | 2005 |
| Global Healthcare Staffing Ltd | Administrative & support | 2019 |
| Globetec Solutions International Ltd | Administrative & support | 2017 |
| Globetrotters Bar & Golf Ltd | Arts & recreation | 2020 |
| Glow Media TV Limited | Professional & scientific | 2020 |
| Going Concerns Limited | Professional & scientific | 1957 |
| Golden Triangle Learning CIC | Professional & scientific | 2020 |
| Goldin Holdings Limited | Financial services | 2015 |
| Goldin Lemcke Limited | Real estate | 2002 |
| Gomez & Schou Associates Limited | Professional & scientific | 2023 |
| Good Food (Hove) Ltd | Hospitality | 2014 |
| Good Work Enterprises Ltd | Hospitality | 2018 |
| Good-Bits.Co.Uk Ltd | Manufacturing | 2016 |
| Goodfellas Enterprises Ltd | Wholesale & retail | 2016 |
| Googoo Oral Care Ltd | Health & social care | 2025 |
| Gore Green Farm Limited | Administrative & support | 2011 |
| Gorringe Electrical Ltd | Construction | 2004 |
| Gothic House Management Limited | Households | 1991 |
| Gouvea Logistic Ltd | Transport & logistics | 2019 |
| Grains Flooring & Leisure Limited | Construction | 2007 |
| Green + Jenks Ltd | Professional & scientific | 2025 |