| Fenner Garages Limited | Manufacturing | 2003 |
| Fernlo Limited | Hospitality | 2014 |
| Ferrando Holdings Limited | Real estate | 2025 |
| Fieldfuse Consulting Limited | Professional & scientific | 2023 |
| Financial Media Group Limited | Administrative & support | 2015 |
| Find My Shrine Ltd | Information & communication | 2025 |
| Fire Doors FM Limited | Construction | 2025 |
| Fired UP Pizza Halstead Limited | Hospitality | 2024 |
| Firmbase Construction Limited | Construction | 1998 |
| First Acre Technologies Ltd | Professional & scientific | 2026 |
| First Point Office Supplies Limited | Wholesale & retail | 2002 |
| Firview Holdings Limited | Real estate | 2015 |
| Flameguard Fire Protection Limited | Administrative & support | 2004 |
| Flaming Desserts WAX Ltd | Wholesale & retail | 2022 |
| Flash Bang Wallop Limited | Professional & scientific | 2011 |
| Flitch and Fern Courts Management Company Limited | Real estate | 2011 |
| Flitch Engraving Ltd | Manufacturing | 2014 |
| Floor FIX Services Ltd | Construction | 2020 |
| Flosmart Heating Ltd | Construction | 2018 |
| Flowtronic Ltd | Construction | 2015 |
| FM Litho Holdings Limited | Financial services | 2008 |
| Foley Consultants Limited | Financial services | 2008 |
| Football FUN Factory (Community 126) Limited | Arts & recreation | 2024 |
| Forbes Administration Services Limited | Professional & scientific | 2003 |
| Forbes Directors Limited | Professional & scientific | 2003 |
| Forbes Plumbing Limited | Construction | 2002 |
| Forske Research Ltd | Professional & scientific | 2021 |
| Fort Farm Knockholt Ltd | Agriculture & fishing | 2021 |
| Fort Gilkicker Ltd | Real estate | 2016 |
| Fort Gilkicker Properties Ltd | Real estate | 2016 |
| Four Seasons Apartments (Carbis Bay) Management Company Limited | Households | 2013 |
| Freestyle Fabrications Limited | Manufacturing | 2016 |
| Fridaywood Gates Limited | Manufacturing | 2013 |
| Fridaywood Steel Limited | Manufacturing | 2022 |
| Friends CO9 Ltd | Professional & scientific | 2019 |
| From Suzie’S Limited | Wholesale & retail | 2023 |
| Fullers (Brickwall Farm) Limited | Agriculture & fishing | 1960 |
| Furlong Roofing Limited | Construction | 2001 |
| Fusion Electrical and Plumbing Ltd | Construction | 2018 |
| G & S Brown Brickwork Limited | Construction | 2011 |
| G a Imports Limited | Wholesale & retail | 2004 |
| G Baster Building Services Ltd | Construction | 2019 |
| G Bennett Plumbing and Heating Limited | Construction | 2019 |
| G L S Cavendish Legal Services Limited | Professional & scientific | 2012 |
| G.E. Cook & Sons Sales Limited | Extraterritorial | 1986 |
| G.E.Cook & Sons Limited | Real estate | 1961 |
| G.Gard Limited | Construction | 2025 |
| Gainsford Hall Workshop Ltd | Wholesale & retail | 2018 |
| Galetos Newmarket Limited | Hospitality | 2026 |
| Gallant Property Agent Ltd | Real estate | 2023 |
| Gallops and Giggles Ltd | Wholesale & retail | 2025 |
| GAR Build Limited | Construction | 2015 |
| Gary Cross Electrical Limited | Manufacturing | 2012 |
| Gavin Conlan Photography Limited | Professional & scientific | 2013 |
| GB Auto Services Ltd | Wholesale & retail | 2019 |
| GB Autos Halstead Ltd | Wholesale & retail | 2022 |
| GB Diagnostic Limited | Health & social care | 2014 |
| Gberna Ltd | Wholesale & retail | 2013 |
| GDB Refurbishments UK Limited | Construction | 2026 |
| GDB Residential UK Ltd | Real estate | 2026 |
| Gears and Clouds Limited | Professional & scientific | 1999 |
| Getoleb Ltd | Transport & logistics | 2019 |
| GHZ Consultancy Ltd | Professional & scientific | 2023 |
| Ginger Rail Services Limited | Construction | 2024 |
| Giraffe Head Studios Ltd | Information & communication | 2024 |
| Glenn Wilson Contracts Limited | Construction | 2014 |
| GLO Aesthetics & Whitening Ltd | Other services | 2024 |
| GLT Global Ltd | Wholesale & retail | 2025 |
| Godstone Property Limited | Real estate | 2020 |
| Golddot Ltd | Information & communication | 2006 |
| Golden Acorns Wrap Around Care Ltd | Health & social care | 2024 |
| Goldfinch FGF Limited | Other services | 2011 |
| Good Natured (Happy Monkey) Ltd | Manufacturing | 2007 |
| Goodyear Craven Estates Ltd | Real estate | 2002 |
| Gosfield Antiques Village Ltd | Information & communication | 2016 |
| Gosfield Exterior Cleaning Limited | Administrative & support | 2025 |
| Gosfield Lake Golf Club Limited | Arts & recreation | 1986 |
| Gosfield School Limited | Education | 1967 |
| Goss Motors Ltd | Wholesale & retail | 2024 |
| Gradebrook Filling Stations (S E) Limited | Wholesale & retail | 2006 |
| Grand Style Windows Limited | Construction | 2013 |
| Graphene Batteries Limited | Wholesale & retail | 2024 |
| Grass Green Farm Ltd | Agriculture & fishing | 2024 |
| Grass Roots Academic Support Limited | Administrative & support | 2009 |
| Gray Farming Ltd | Agriculture & fishing | 2013 |
| Grays Cars and Classics Ltd | Wholesale & retail | 2014 |
| GRB Infrastructure Ltd | Construction | 2014 |
| GRD Plumbing and Heating Limited | Extraterritorial | 2012 |
| Great Meadow END Farm Limited | Agriculture & fishing | 2005 |
| Great Oak Place Management Company Limited | Households | 2024 |
| Great Used Cars Ltd | Wholesale & retail | 2021 |
| Green Architect Limited | Professional & scientific | 2007 |
| Green Barnes Renovations Limited | Construction | 2018 |
| Green Button Design Ltd | Construction | 2013 |
| Green Glaze Windows Limited | Construction | 2011 |
| Green Room Inc Ltd | Information & communication | 2012 |
| Greenables Limited | Construction | 2014 |
| Greenbanks (Halstead) Management Company Limited | Households | 2011 |
| Greenfield Prestige Ltd | Other services | 2013 |
| Greenfield Printing Ltd | Manufacturing | 2015 |