| Falco Private Wealth Limited | Financial services | 2017 |
| Falco Real Estate Finance Limited | Financial services | 2025 |
| Falco Salamanca CP Limited | Administrative & support | 2022 |
| Falco Stickney Limited | Administrative & support | 2024 |
| Falco Sutton Limited | Administrative & support | 2022 |
| Falco WMH 2 Limited | Financial services | 2021 |
| Falco WMH Limited | Financial services | 2019 |
| Falco Woodville Holdco Limited | Administrative & support | 2024 |
| Falco Wragby Road Ltd | Construction | 2022 |
| Falco Zephyr EG Limited | Financial services | 2025 |
| Fancy Lamp Ltd | Professional & scientific | 2014 |
| Farm Lakes Retreat Ltd | Agriculture & fishing | 2023 |
| Farringford Estate Limited | Hospitality | 2006 |
| Fashion Group Limited | Manufacturing | 2019 |
| Fast Tune Security Ltd | Wholesale & retail | 2023 |
| Fasttrack Wholesale Ltd | Wholesale & retail | 2022 |
| FC Juice Limited | Financial services | 2020 |
| Feiges Properties Limited | Real estate | 2002 |
| Fenytark Ltd | Transport & logistics | 2025 |
| Ferndale International | Financial services | 2018 |
| Ferns Wholesale Ltd | Wholesale & retail | 2024 |
| FEZ Cleaning Services Limited | Other services | 2005 |
| Fibretec Cleaning Ltd | Other services | 2019 |
| Fibretec Property Maintenance Ltd | Other services | 2019 |
| Fifth Wing Games Ltd | Wholesale & retail | 2006 |
| FIGS4U Ltd | Wholesale & retail | 2023 |
| Finchley Group Ltd | Construction | 2020 |
| Fine Build Homes Limited | Construction | 2014 |
| Finesite Limited | Real estate | 2016 |
| Fire and Iron Productions Limited | Information & communication | 2017 |
| First Call Inspections Ltd | Construction | 2024 |
| Firstlinehealthgroup Limited | Public administration | 2023 |
| Fit Factory Brentwood Limited | Arts & recreation | 2023 |
| Fitness Depot Limited | Wholesale & retail | 2025 |
| Five Projects Ltd | Professional & scientific | 2016 |
| Flexc Ltd | Construction | 2025 |
| Flexee Ltd | Information & communication | 2021 |
| Flickan Forever Merrie Ltd | Wholesale & retail | 2024 |
| FLO Finance Services Ltd | Professional & scientific | 2020 |
| FLO Office Support Limited | Professional & scientific | 2016 |
| FLO Property Ltd | Administrative & support | 2016 |
| Floframe Ltd | Information & communication | 2026 |
| Fluid Advisory Ltd | Information & communication | 2025 |
| Fluid Connections Ltd | Professional & scientific | 2015 |
| Flush Energy Limited | Manufacturing | 2020 |
| Flush Estates Limited | Construction | 2021 |
| Flush Materials Limited | Manufacturing | 2025 |
| FLY2LET.NET Limited | Information & communication | 2005 |
| FNX Media Ltd | Information & communication | 2020 |
| Focused Mind Coaching Ltd | Health & social care | 2016 |
| Food Leigh on Sea Limited | Hospitality | 2025 |
| Foodlab Hub Limited | Wholesale & retail | 2025 |
| Foraxis Consulting and Compliance Partner Ltd | Professional & scientific | 2025 |
| Forcer Protocol CIC | Health & social care | 2025 |
| Forever Homes Properties Limited | Construction | 2022 |
| Fortis UK Alliance Limited | Health & social care | 2025 |
| Fortitudine Ltd | Information & communication | 2023 |
| Foster Fire Ltd | Construction | 2024 |
| Fountain Business Services Limited | Health & social care | 2013 |
| Fountain Cleaners Limited | Other services | 1997 |
| Four Little Punks Ltd | Construction | 2023 |
| Fowers Oldbury & SON Ltd | Professional & scientific | 2013 |
| Foxburrows Court Residents Association Limited | Households | 2011 |
| Franchise Intelligence (GB) Limited | Information & communication | 2014 |
| Frankie on the Rocks Ltd | Hospitality | 2023 |
| Freese Watches Limited | Other services | 2019 |
| Freesprite Media Limited | Information & communication | 2016 |
| Freesprite Studios Limited | Information & communication | 2025 |
| Freestone & Webb Limited | Professional & scientific | 1990 |
| FTF Estates Ltd | Professional & scientific | 2021 |
| Fuel Integrated Communications Limited | Professional & scientific | 2004 |
| Fulton Paper 97 Limited | Wholesale & retail | 2025 |
| Fulton Paper Limited | Wholesale & retail | 2021 |
| Fundeey Limited | Information & communication | 2015 |
| Fusion Access & Lifting Limited | Manufacturing | 2023 |
| Future Focus Financial Planning Ltd | Financial services | 2020 |
| Futureforce Enterprises Limited | Administrative & support | 1999 |
| FW Consulting Limited | Professional & scientific | 2024 |
| FX3 Solutions Limited | Information & communication | 2011 |
| G & a Interiors Ltd | Construction | 2016 |
| G & I Spirit Group Limited | Wholesale & retail | 2017 |
| G a D a M B a Limited | Administrative & support | 2008 |
| G L Delivery Service Ltd | Wholesale & retail | 2019 |
| G M D Sourcing Limited | Other services | 2014 |
| G.J. Plumb Limited | Information & communication | 2012 |
| G1 Consulting & Management Ltd | Professional & scientific | 2022 |
| Gablecrest Limited | Professional & scientific | 2014 |
| Gables Residential Management Limited | Households | 2026 |
| Gainpoint Limited | Administrative & support | 2010 |
| Gallows Brackets Limited | Manufacturing | 2010 |
| Garden Games & Leisure Ltd | Wholesale & retail | 2003 |
| Gardner Business Solutions Ltd | Information & communication | 2011 |
| Garrison Digital Ltd | Information & communication | 2020 |
| Gary Porter Building Contractor Limited | Construction | 2015 |
| GAS on Sea Limited | Construction | 2018 |
| Gaster Limited | Arts & recreation | 2012 |
| Gazel Ltd | Health & social care | 2008 |
| Gazinta Properties Limited | Real estate | 2015 |
| GB Electrical (Essex) Limited | Construction | 2018 |
| GB New Media Limited | Information & communication | 2005 |