| Fraser Capital 2 Limited | Professional & scientific | 2019 |
| Fraser Capital Limited | Professional & scientific | 2016 |
| Fraser Construct Limited | Financial services | 2023 |
| Fraser Financials Limited | Professional & scientific | 2008 |
| Fraylich Homes Limited | Real estate | 2016 |
| Fredan Care Solutions Limited | Health & social care | 2018 |
| Frederick F Smith (Development) Limited | Construction | 2020 |
| Frederick F.Smith(Builders)Limited | Construction | 1972 |
| Fredwave Ltd | Manufacturing | 2022 |
| Free Thinking Design Limited | Information & communication | 2009 |
| Freedom Factory Limited | Real estate | 2019 |
| Freedom Homes Ltd | Real estate | 2017 |
| Freedom Property Ltd | Real estate | 2020 |
| Freelance F C Limited | Professional & scientific | 2021 |
| Freemans Transport Limited | Transport & logistics | 2014 |
| Freemantle Narrows Ltd | Wholesale & retail | 2024 |
| Freescape Ltd | Construction | 2020 |
| Freight Fortunes Ltd | Transport & logistics | 2025 |
| Freight Move Ltd | Transport & logistics | 2026 |
| Freighters Ltd | Extraterritorial | 2023 |
| Fremand Ltd | Health & social care | 2023 |
| French Cellar Limited | Wholesale & retail | 2023 |
| French Style Ltd | Hospitality | 2019 |
| Fresh Laundry Cambs Ltd | Other services | 2024 |
| Fresh NAN Ltd | Hospitality | 2019 |
| Fresh SET by Char Ltd | Other services | 2024 |
| Freshland Supermarket Limited | Wholesale & retail | 2025 |
| Freshwater M & E Services Limited | Construction | 2003 |
| Freyatech Solutions Limited | Information & communication | 2018 |
| Friar Tuck Whittlesey Limited | Wholesale & retail | 2006 |
| Friar Tucks of East Anglia Limited | Hospitality | 2006 |
| Friar's Pride Investments Limited | Wholesale & retail | 2009 |
| Friar’S Pride Holdings Limited | Financial services | 2023 |
| Friendly Property Group Ltd | Real estate | 2025 |
| Friends Laser Ltd | Other services | 2024 |
| Friends of Peterborough Prison Limited | Health & social care | 2009 |
| Friends VS Music Ltd | Arts & recreation | 2017 |
| Friendsplay Ltd | Health & social care | 2018 |
| Frii Merchant Services Ltd | Administrative & support | 2019 |
| Fritech Innovation & Management Limited | Wholesale & retail | 2013 |
| Frithsden Vineyard Limited | Agriculture & fishing | 2019 |
| FRL Property Limited | Real estate | 2022 |
| FRM Automotive Limited | Wholesale & retail | 2012 |
| FRM Nica Trans Ltd | Transport & logistics | 2026 |
| FRM the Garage Limited | Extraterritorial | 2020 |
| Frog Hollow Limited | Hospitality | 2017 |
| Froggatt Gottwald Consulting Limited | Professional & scientific | 2014 |
| Froglife Limited | Professional & scientific | 1989 |
| From US 2 U Ltd | Wholesale & retail | 2025 |
| Frontline Limited | Wholesale & retail | 1937 |
| Frontline Publishing Services Limited | Professional & scientific | 1974 |
| Frozen Food & Electrical World Limited | Wholesale & retail | 2020 |
| FRP Technologies EOT Limited | Financial services | 2026 |
| FRP Technologies Ltd | Professional & scientific | 2021 |
| FRR Solutions Limited | Extraterritorial | 2004 |
| FRU Apartments Ltd | Real estate | 2019 |
| Fruhant Limited | Wholesale & retail | 2025 |
| Fruit BAT Designs Limited | Manufacturing | 2003 |
| Fruitwell Ltd | Wholesale & retail | 2015 |
| Fruitwood Limited | Administrative & support | 2000 |
| Frutrack Limited | Transport & logistics | 2024 |
| Frututti Trading Capital Investments Ltd | Wholesale & retail | 2025 |
| FRY Guys Peterborough Ltd | Hospitality | 2025 |
| FS & CC Developments Ltd | Construction | 2024 |
| FS Cars Limited | Wholesale & retail | 2021 |
| FS Galaxy Limited | Professional & scientific | 2026 |
| FS Import UK Ltd | Wholesale & retail | 2019 |
| FS Property Partners Ltd | Real estate | 2024 |
| FSB Solutions Limited | Wholesale & retail | 2020 |
| FSC General Services Ltd | Administrative & support | 2022 |
| FSC Investments Ltd. | Health & social care | 2009 |
| FSC Vehicle Parts Limited | Wholesale & retail | 2026 |
| FSG Full Service Garage Ltd | Wholesale & retail | 2021 |
| Fsquared Projects Ltd | Manufacturing | 2025 |
| Fsupplies Ltd | Wholesale & retail | 2025 |
| FT Golden Bar Estates Ltd | Real estate | 2025 |
| FT Luxe Enterprises Ltd | Real estate | 2025 |
| Fuel Your Story Limited | Wholesale & retail | 2022 |
| Fuji Property Ltd | Real estate | 2022 |
| Fulbridge Social Care Limited | Administrative & support | 2015 |
| Full Circle Strategies Ltd | Information & communication | 2024 |
| Full Force Management Ltd | Administrative & support | 2017 |
| Full GAS Creative Limited | Professional & scientific | 2022 |
| Full of Beans Peterborough Ltd | Hospitality | 2022 |
| Full of Beans Wembley Ltd | Hospitality | 2022 |
| Full Service Carpet Cleaning Ltd | Construction | 2023 |
| Full Service Garage Ltd | Wholesale & retail | 2015 |
| Full Ultima Limited | Manufacturing | 2022 |
| Fullards Limited | Financial services | 2019 |
| Fullsoft Limited | Information & communication | 2024 |
| Fumaj Ltd | Construction | 2023 |
| FUN2DRIVE Limited | Transport & logistics | 2020 |
| Funbuk-Care Ltd | Health & social care | 2015 |
| FUNK3000 Ltd. | Professional & scientific | 2024 |
| Funstream Ltd | Professional & scientific | 2012 |
| Furemene Ltd | Hospitality | 2026 |
| Furniture Deals (Peterborough) Ltd | Wholesale & retail | 2024 |
| Furry Fish Limited | Extraterritorial | 2005 |
| Further Coaching Ltd | Education | 2023 |
| Fused Services Ltd | Construction | 2025 |