| EYE Heart Ltd | Extraterritorial | 2023 |
| F&H Plumbing GAS Building Services Ltd | Administrative & support | 2019 |
| F&J Mechanical and Electrical Ltd | Construction | 2020 |
| F.O.A Electricals Ltd | Construction | 2022 |
| Fabric (EU) Limited | Professional & scientific | 2012 |
| Fairview Glazing Ltd | Construction | 2015 |
| Fairydust Ltd | Administrative & support | 2023 |
| Famray Limited | Real estate | 2017 |
| Fantastic Four Assets Limited | Real estate | 2026 |
| Fast Serve Ltd | Hospitality | 2022 |
| Fastline Lifts Limited | Construction | 2010 |
| Fatb Healthcare Limited | Health & social care | 2015 |
| FAY & S Property Limited | Real estate | 2025 |
| FCS Facades Limited | Construction | 1999 |
| FELL4WAY Events Ltd | Administrative & support | 2025 |
| Felton Films Limited | Information & communication | 2023 |
| Felton Mechanical Services Limited | Construction | 2026 |
| Fennec Mechanical and Electrical Services Ltd. | Manufacturing | 2019 |
| Fenner Carpentry and Construction Ltd | Manufacturing | 2025 |
| Fenton Property Group Ltd | Real estate | 2018 |
| Ferreira Services Ltd | Construction | 2015 |
| FIFTY5 Services Limited | Health & social care | 2023 |
| Finch Hope Sylvie Property Investments Limited | Real estate | 2023 |
| Finch Logic Limited | Professional & scientific | 2009 |
| Firebolt RB Holdings Limited | Financial services | 2016 |
| Firefighter Heritage Centre Limited | Arts & recreation | 2015 |
| Fireman's Farm Limited | Arts & recreation | 2014 |
| Firm Foundations Care Ltd | Health & social care | 2026 |
| Firma Contractors Ltd | Construction | 2017 |
| Firmus Holdings Limited | Financial services | 2022 |
| First Onda Ltd | Wholesale & retail | 2025 |
| Fitness Reinvented Ltd | Manufacturing | 2021 |
| FIX Car Key Ltd | Administrative & support | 2025 |
| FJL 13 Limited | Real estate | 2023 |
| Flag Inc Ltd | Arts & recreation | 2023 |
| Flexword Limited | Administrative & support | 2014 |
| Flowfolk Limited | Administrative & support | 2019 |
| Fmhowardds Ltd | Construction | 2025 |
| FMK Electrical Limited | Construction | 2022 |
| FMU Consulting Services Ltd | Professional & scientific | 2020 |
| Foam Works Digital Limited | Information & communication | 2021 |
| Foam Works Ltd | Professional & scientific | 2007 |
| Focus Windows Limited | Manufacturing | 1974 |
| Fold U.K. Limited | Hospitality | 2002 |
| Forefront Commerce Ltd | Wholesale & retail | 2023 |
| Forfamily Ltd | Real estate | 2023 |
| Formation Industries Limited | Professional & scientific | 2014 |
| Formotive Industries Limited | Professional & scientific | 2025 |
| Formula Lift Services Ltd | Professional & scientific | 2022 |
| Four Seals Digital Limited | Information & communication | 2020 |
| FOX Fine Wines Limited | Hospitality | 2020 |
| Foyle Developments Limited | Construction | 2014 |
| Fractal Solutions Holdings Limited | Financial services | 2026 |
| Fractal Solutions Properties Limited | Real estate | 2026 |
| Frame Regalia Limited | Wholesale & retail | 2019 |
| Frankos Chauffeurs Ltd | Other services | 2014 |
| Freebird Properties Limited | Real estate | 2018 |
| Freehold 94 to 96 Trundleys Road Limited | Households | 2021 |
| Freeland Horticulture Limited | Administrative & support | 2000 |
| Freshline Property Ltd | Real estate | 2017 |
| Friction Burn Pictures Ltd | Information & communication | 2020 |
| FTJ Ltd | Transport & logistics | 2023 |
| FTP Resources Ltd | Wholesale & retail | 2019 |
| Ftwd Ltd. | Professional & scientific | 2013 |
| FUN4ABI Limited | Wholesale & retail | 2021 |
| Funtime Gifts Limited | Manufacturing | 1992 |
| Futerus Ltd | Information & communication | 2021 |
| Futures CF24 Ltd | Health & social care | 2023 |
| G Merkaj Construction Limited | Extraterritorial | 2014 |
| G&G Group Southeast Limited | Wholesale & retail | 2011 |
| G.Wigzell Electrical Ltd | Construction | 2003 |
| Gabby Cocca Ltd | Other services | 2022 |
| Galloper Extension Investco Limited | Financial services | 2020 |
| Galloper Extension Investco Parent Limited | Financial services | 2020 |
| Galloper Holdco Limited | Financial services | 2016 |
| Gallucks Limited | Information & communication | 2018 |
| Galmark Property Services Limited | Construction | 2004 |
| Galvani Jvco Ltd | Financial services | 2019 |
| Gandulong Specialist Healthcare Ltd | Health & social care | 2025 |
| Gardiner Park & Estates Ltd | Hospitality | 2024 |
| Garland Homes Limited | Construction | 2012 |
| Gary Hagon Electrical Limited | Construction | 2016 |
| GAS 1ST Plumbing & Heating Limited | Construction | 2019 |
| Gavigan Paving Limited | Construction | 1997 |
| Gayges Limited | Construction | 2002 |
| GBA SW Limited | Real estate | 2014 |
| GD Lifting Limited | Construction | 2021 |
| Gees Property Services Ltd | Construction | 2025 |
| George & Page Ltd | Administrative & support | 2012 |
| George LEE Associates Limited | Professional & scientific | 2004 |
| GHM Trade Sales Limited | Wholesale & retail | 2024 |
| Ghostship Logistics Limited | Transport & logistics | 2013 |
| Gianna & Julianna Ltd | Health & social care | 2022 |
| Gibson House Property Management Limited | Real estate | 2024 |
| Gifted Hands Limited | Administrative & support | 2018 |
| Gifted Stationery Holdings Limited | Extraterritorial | 2021 |
| Gigmile Technologies Limited | Information & communication | 2024 |
| Gillespie Property Management & Investment Ltd | Real estate | 2024 |
| Gillivan Rigging Limited | Construction | 2019 |
| Gj&J Holdings Limited | Real estate | 2021 |