| Fliproom Ltd | Wholesale & retail | 2025 |
| Flitch & Chips Ltd | Hospitality | 2017 |
| Flowers by KC Ltd | Wholesale & retail | 2024 |
| Flowline Air Conditioning Ltd | Construction | 2016 |
| Flush JV (Leigh) Limited | Construction | 2014 |
| Flush Properties Limited | Construction | 2007 |
| Flusher Limited | Professional & scientific | 2008 |
| FNV Properties Solutions Limited | Professional & scientific | 2023 |
| Focus Fire Protection Ltd | Construction | 2019 |
| Focus Media Distribution Limited | Administrative & support | 2010 |
| Focus Media Global Limited | Administrative & support | 2002 |
| Focused on Design Limited | Manufacturing | 2014 |
| Focustime Limited | Real estate | 1986 |
| Foode Ltd | Administrative & support | 2016 |
| Football Coaching School Limited | Education | 2022 |
| Football FUN Factory (Community 028) Ltd | Arts & recreation | 2021 |
| Football FUN Factory (Community 034) Ltd | Arts & recreation | 2021 |
| Foraged Drinks Ltd | Wholesale & retail | 2025 |
| Fortitudine (South) Ltd | Real estate | 2024 |
| Forza Sports Marketing Ltd | Professional & scientific | 2021 |
| Foster Bourne Wealth Management Ltd | Financial services | 2018 |
| Foster-Harwin Limited | Administrative & support | 2011 |
| Founderpass Ltd | Wholesale & retail | 2015 |
| Foundry Data Ltd | Professional & scientific | 2025 |
| Four Season Saunas Ltd | Construction | 2025 |
| FOX Floors Limited | Construction | 2020 |
| FOX Management Consulting Ltd | Professional & scientific | 2016 |
| FOX Vixen and Cubs Limited | Hospitality | 2026 |
| Fraise Records Limited | Arts & recreation | 2019 |
| Frametech (Essex) Ltd | Construction | 2009 |
| Frametech Lofts (Essex) Limited | Construction | 2000 |
| Frametech Timber Construction Ltd | Construction | 2020 |
| Frank Dextor Ltd | Real estate | 2024 |
| Franklins Training Services Ltd | Education | 2014 |
| Frederick and MAY Ltd | Professional & scientific | 2023 |
| Frederick's Electrical Solutions Limited | Construction | 2020 |
| Freemo Group Limited | Real estate | 2021 |
| Frenchmex Investments Ltd | Real estate | 2026 |
| Fresh Plastering & Rendering Ltd | Construction | 2024 |
| Friars Mews Management Limited | Households | 2019 |
| Friday Design Limited | Professional & scientific | 2023 |
| Fright Nights London Limited | Arts & recreation | 2016 |
| From Eden Ltd | Hospitality | 2022 |
| Front Architecture Limited | Professional & scientific | 2014 |
| Front Lane Cranham Management Limited | Households | 2010 |
| Fserv Ltd | Administrative & support | 2022 |
| Full Life Pilates Ltd | Arts & recreation | 2018 |
| Function Hospitality Limited | Hospitality | 2025 |
| Function Media Limited | Information & communication | 2025 |
| Funky Goat UK Ltd | Construction | 2026 |
| Fussy Events Ltd | Administrative & support | 2025 |
| Fussy Recruitment Group Limited | Administrative & support | 2019 |
| Future Step Education Ltd | Education | 2016 |
| G & G Powder Coatings Limited | Manufacturing | 1998 |
| G Sales Ltd | Wholesale & retail | 2026 |
| G-Tech Security Limited | Administrative & support | 2013 |
| G-Vision Property Services Ltd | Real estate | 2016 |
| G-Vision Resourcing Ltd | Health & social care | 2021 |
| G2 Portfolio Limited | Real estate | 2005 |
| Gables 247 Ltd | Wholesale & retail | 2021 |
| Gabsto Limited | Construction | 2022 |
| Gadgetsbay Limited | Wholesale & retail | 2021 |
| Gaede Services UK Ltd | Administrative & support | 2024 |
| GAL in the Garden Ltd | Agriculture & fishing | 2023 |
| Galaxie Lodge Management Company Limited | Households | 1989 |
| Ganglion Consultancy Services Limited | Wholesale & retail | 2013 |
| Ganglion Properties Limited | Real estate | 2020 |
| Garden Care Ltd | Water & waste | 2024 |
| Garden Rooms 365 Ltd | Construction | 2020 |
| Gareth West & Sons Limited | Real estate | 2023 |
| Gareth West Building and Carpentry Limited | Construction | 2019 |
| Gary Battison Training Limited | Education | 2023 |
| GAS Box Park Ltd | Real estate | 2026 |
| GAS Monkey Hvac Ltd | Construction | 2014 |
| GAS Studio Limited | Professional & scientific | 2025 |
| GC BAD UK Limited | Construction | 2025 |
| GCH Flooring (Essex) Limited | Construction | 2024 |
| GCS Automotive Services Ltd | Wholesale & retail | 2022 |
| Gecko Craft Designs Ltd | Administrative & support | 2015 |
| Geddington Court (Waltham Cross) Management Company Limited | Professional & scientific | 1990 |
| Gelmen Limited | Hospitality | 2013 |
| Gement Ltd | Construction | 2019 |
| Gemraj Technologies Limited | Information & communication | 2015 |
| Genie Garage Door Conversions Ltd | Construction | 2026 |
| Gents Time Ltd | Other services | 2025 |
| Genus Property Developments Ltd | Construction | 2023 |
| Gerry Walsh & Associates Limited | Professional & scientific | 2019 |
| GET a Grip Rock Holds Limited | Manufacturing | 2026 |
| GFG Central Services Ltd | Administrative & support | 2019 |
| Gibbard Associates Limited | Real estate | 2018 |
| Gifford Finishers Limited | Construction | 2020 |
| Gifford Lanes Ltd | Real estate | 2020 |
| Gifford Magee Ltd | Financial services | 2025 |
| Gigi Naturals UK Ltd | Wholesale & retail | 2020 |
| Gilbert & Rose Assets Ltd | Real estate | 2026 |
| Gilbert & Rose Commercial Ltd | Real estate | 2023 |
| Gilbert & Rose Holdings Ltd | Financial services | 2023 |
| Gilbert & Rose Lettings Ltd | Real estate | 2020 |
| Gilbert & Rose New Homes Ltd | Real estate | 2020 |
| Gilbert & Rose Sales Ltd | Real estate | 2019 |