| Food Services Ltd | Wholesale & retail | 2009 |
| Foodee Limited | Hospitality | 2017 |
| Foodie Favourites Limited | Hospitality | 2024 |
| Foodland Trading Limited | Wholesale & retail | 2009 |
| Foodlog International Ltd | Wholesale & retail | 2026 |
| Foodz Junction Limited | Hospitality | 2024 |
| Foot Comfort Centre Limited | Professional & scientific | 2013 |
| Footylink Ltd | Information & communication | 2023 |
| Force Group Ltd | Construction | 2026 |
| Fore Vision Ltd | Construction | 2013 |
| Foreignstudents.Com Limited | Information & communication | 2004 |
| Forest Gate Motors Ltd | Wholesale & retail | 2023 |
| Forest Hill Golf Club Ltd | Hospitality | 2024 |
| Forever Close Limited | Arts & recreation | 2019 |
| Forfun Limited | Health & social care | 2012 |
| Forma Vita Studio Ltd | Wholesale & retail | 2025 |
| Formation (M & E ) Limited | Construction | 2018 |
| Formation Design & Build Limited | Construction | 1998 |
| Formationshunt Ltd | Administrative & support | 2022 |
| Formed Architects & Designers (UK) Limited | Professional & scientific | 2014 |
| Formooli Investments Ltd | Construction | 2023 |
| Formooli Real Estates Ltd | Real estate | 2025 |
| Formula Sound Limited | Manufacturing | 1973 |
| Formula Test Ltd | Information & communication | 2024 |
| Fornacelli Homes Ltd | Construction | 2025 |
| Fort Woks Limited | Hospitality | 2017 |
| Fortu Critical Care Limited | Health & social care | 2014 |
| Forward Consultants Ltd | Professional & scientific | 2013 |
| Forward Move Limited | Real estate | 2019 |
| Fostpat Dealers Limited | Wholesale & retail | 2016 |
| Founder-Minded Ltd | Professional & scientific | 2023 |
| Fountain of Life Apostolic Church | Other services | 2011 |
| Four Development Management Ltd | Construction | 2021 |
| Four Hearts Care Ltd | Health & social care | 2025 |
| Four Quarters (Ingestre Road) Ltd | Real estate | 2015 |
| Fouram Group Ltd | Financial services | 2024 |
| Fourth Way Wembley Autos Limited | Wholesale & retail | 2014 |
| Foxx Solutions Ltd | Wholesale & retail | 2023 |
| Franco's Motorbike Services Ltd. | Wholesale & retail | 2005 |
| Frank K Construction Ltd | Construction | 2024 |
| Frank Mays Ltd | Wholesale & retail | 2000 |
| Frankieroos Limited | Wholesale & retail | 2021 |
| Franklyn Care Services Ltd | Health & social care | 2025 |
| Fratelli Detailing Ltd | Administrative & support | 2023 |
| Freebridge Commercial Limited | Financial services | 1993 |
| Freebridge Properties Limited | Real estate | 1999 |
| Freedom Facility Services Ltd | Administrative & support | 2025 |
| Freedom Financial Solutions Ltd | Financial services | 2007 |
| Freehold 25 Ltd | Real estate | 2026 |
| Freepy Commercial Limited | Real estate | 2024 |
| Freepy Limited | Real estate | 2009 |
| Freez FIX Ltd | Manufacturing | 2026 |
| Freimco Ltd | Wholesale & retail | 2023 |
| French Building Company FBC Ltd | Construction | 2017 |
| Frentusca Constructions Ltd | Construction | 2017 |
| Fresco Deli (London) Limited | Hospitality | 2014 |
| Fresh Arts C.I.C. | Education | 2009 |
| Fresh Arts Theatre School Ltd | Arts & recreation | 2015 |
| Fresh Buns Limited | Hospitality | 2025 |
| Fresh Meat Wembley Ltd | Wholesale & retail | 2026 |
| Fresh UP Cleaning Limited | Other services | 2011 |
| Freshfusion Ltd | Hospitality | 2025 |
| Freydan Ltd | Education | 2019 |
| FRF Services Ltd | Other services | 2020 |
| Friends Hearth - TMR Ltd | Professional & scientific | 2015 |
| Friends of Barham Library | Arts & recreation | 2011 |
| Friends of Barham Park | Health & social care | 2023 |
| Friends of Preston Park Wembley C.I.C. | Arts & recreation | 2026 |
| Friends Property Solutions Ltd | Real estate | 2025 |
| Friends Tavern Limited | Administrative & support | 2016 |
| Fring Ltd | Hospitality | 2023 |
| Frinton Court Properties Limited | Real estate | 2009 |
| FRM Security Ltd | Administrative & support | 2025 |
| Fromewill Limited | Wholesale & retail | 1984 |
| Fruitful Creations Limited | Professional & scientific | 2017 |
| Fruitz Bar Limited | Wholesale & retail | 2024 |
| FS Preston Ltd | Hospitality | 2024 |
| FSA Prime Ltd | Health & social care | 2023 |
| FSA Pro Ltd | Real estate | 2024 |
| FSM Trans Ltd | Transport & logistics | 2022 |
| Fuchsia Builders Ltd | Construction | 2019 |
| Fujion Music Ltd | Information & communication | 2025 |
| Fulham Express DRY Cleaners Ltd | Administrative & support | 2019 |
| Full House Carpentry Limited | Construction | 2017 |
| Fulmar Holdco Limited | Administrative & support | 2020 |
| Funn U Need Partywholesalers Limited | Wholesale & retail | 2005 |
| Furlan FAY Health Services Ltd | Health & social care | 2017 |
| Furnyx Limited | Wholesale & retail | 2026 |
| Furqan Food Distribution Ltd | Wholesale & retail | 2015 |
| Furry Friends SCT Ltd | Wholesale & retail | 2026 |
| Fusion Beauty Limited | Other services | 2018 |
| Fusion Hairdesign Ltd | Other services | 2015 |
| Future Centre Property Management Ltd | Financial services | 2021 |
| Future Centre Storage and Distribution Ltd | Transport & logistics | 2021 |
| Future Glass & Windows UK Ltd | Manufacturing | 2011 |
| Future Home Kitchen and Furniture Decor Limited | Manufacturing | 2018 |
| Future Rebel Records Limited | Information & communication | 2017 |
| Future Stars Nursery Ltd | Health & social care | 2016 |
| Future T&D Construct Ltd | Construction | 2020 |
| Futurelane Properties Ltd | Real estate | 2016 |