| Fairbairns Property Group Limited | Real estate | 2022 |
| Fairdown (UK) Ltd | Wholesale & retail | 2011 |
| Fairfax Holiday Rentals Limited | Real estate | 2011 |
| Fairfax Land and Real Estate Limited | Real estate | 2015 |
| Fairfax Land Development Advisors Ltd | Real estate | 2024 |
| Fairlea Ltd | Construction | 2023 |
| Fairlead Education Consultancy Limited | Education | 2016 |
| Fairline Holdco Limited | Manufacturing | 2025 |
| Fairview HDG Ltd | Real estate | 2025 |
| Faisal,Ayman and Falila Limited | Health & social care | 2024 |
| Faith in GOD Ministries Peterborough Limited | Administrative & support | 2017 |
| Faithful Communications Limited | Professional & scientific | 2016 |
| Faithstone-Igmh Limited | Real estate | 2026 |
| Faizan-E-Madina Food Store Ltd | Wholesale & retail | 2019 |
| Faizan-E-Madina Shop Ltd | Wholesale & retail | 2024 |
| Fakenham Ltd | Hospitality | 2025 |
| Falah Consulting Ltd | Professional & scientific | 2014 |
| Falcon Court (Huntingdon) Management Company Limited | Real estate | 2017 |
| Falcon International Consorcjum Ltd | Administrative & support | 2024 |
| Falcon Nest Group Limited | Real estate | 2021 |
| Falcon Plumber Ltd | Construction | 2016 |
| Falcon Special Products Limited | Manufacturing | 2025 |
| Falcon Tyres & Auto Ltd | Wholesale & retail | 2023 |
| Falcon Tyres Limited | Wholesale & retail | 2018 |
| Falcons Technologies Ltd | Wholesale & retail | 2025 |
| Falcore Consulting Ltd | Professional & scientific | 2017 |
| Familiar Faces Limited | Arts & recreation | 2015 |
| Families First Peterborough C.I.C. | Health & social care | 2013 |
| Family Assessment and Intervention Service Limited | Health & social care | 2014 |
| Family Wealth Company Limited | Professional & scientific | 2022 |
| Fane Investors Ltd | Real estate | 2026 |
| Fanny Marshall Limited | Real estate | 2017 |
| Fantastic Cats UK Ltd | Wholesale & retail | 2026 |
| Fantastic Financial Ltd | Financial services | 1999 |
| Fantastic Flooring Peterborough Limited | Construction | 2020 |
| Fantastic Solutions Ltd | Information & communication | 2001 |
| FAR Beach Holdings Ltd | Financial services | 2023 |
| Far-Away Art Limited | Arts & recreation | 2004 |
| Faracare Limited | Health & social care | 2022 |
| Fare Focus Travel and Tours PVT Ltd | Administrative & support | 2024 |
| Farez Medical Limited | Health & social care | 2015 |
| Fargo Global (UK) Ltd. | Manufacturing | 2019 |
| Farha's Clinic Ltd | Other services | 2018 |
| Farhizzy Ltd | Real estate | 2026 |
| Faringdon Fields Management Company Limited | Households | 2017 |
| Farnsworth Court Management Company Limited | Real estate | 1990 |
| Faroberts Ltd | Professional & scientific | 2021 |
| Farooq Group Limited | Hospitality | 2025 |
| Farsight Security Services Limited | Administrative & support | 2006 |
| Fashion Diary Limited | Wholesale & retail | 2024 |
| Fashion Loft Limited | Wholesale & retail | 2025 |
| Fast Despatch Logistics Limited | Transport & logistics | 2018 |
| Fast Food March Ltd | Hospitality | 2026 |
| Fast Forward Direct Limited | Transport & logistics | 2015 |
| Fast Track Courier Solutions Ltd | Transport & logistics | 2025 |
| Fast Van Rental UK Limited | Administrative & support | 2016 |
| FAST1CLEANING Ltd | Administrative & support | 2018 |
| Fastseal Limited | Manufacturing | 2003 |
| Fatah Mini Market Ltd | Real estate | 2025 |
| Fatal Logistics Ltd | Transport & logistics | 2025 |
| Fate Marketing Limited | Professional & scientific | 2025 |
| Fateh Fleet Limited | Transport & logistics | 2026 |
| Father Christmas Limited | Information & communication | 1998 |
| Fatiha Ltd | Wholesale & retail | 2025 |
| Faun Productions Ltd | Information & communication | 2026 |
| Faux Forest Ltd | Wholesale & retail | 2023 |
| Fauzi and Dalal Co Ltd | Professional & scientific | 2026 |
| Favour GH Ltd | Health & social care | 2015 |
| Favoured Touch Creations Ltd | Manufacturing | 2025 |
| Fawkes Mgmt Limited | Information & communication | 2023 |
| Fazal Holdings Limited | Real estate | 2017 |
| Fazal Property Ltd | Real estate | 2004 |
| Fazs Curry & Grill Ltd | Hospitality | 2025 |
| FB Associated Services Limited | Construction | 2013 |
| FB Kebab House Ltd | Hospitality | 2025 |
| FBA Kickstarter Ltd | Administrative & support | 2024 |
| FBF Music Limited | Arts & recreation | 2019 |
| FBF Music Live Limited | Arts & recreation | 2019 |
| FBH Property Holdings Limited | Real estate | 2016 |
| FBR Logistics Ltd | Manufacturing | 2025 |
| FBS Engineering Limited | Construction | 2021 |
| FBS Peterborough Ltd | Real estate | 2022 |
| FC & Partners Ltd | Professional & scientific | 2026 |
| FC Peterborough CIC | Arts & recreation | 2020 |
| FC Stickers Ltd | Wholesale & retail | 2023 |
| FC Umbrella Company Ltd | Professional & scientific | 2024 |
| FCE Limited | Construction | 2001 |
| FCK Transport Ltd | Transport & logistics | 2019 |
| FCM Restaurants Limited | Hospitality | 2020 |
| FCS PB Ltd | Hospitality | 2024 |
| FD Aesthetics Ltd | Other services | 2021 |
| FD Clinic Ltd | Other services | 2026 |
| FD Delivery Ltd | Transport & logistics | 2023 |
| Fd&T Ltd | Wholesale & retail | 2025 |
| FDL Parcel Network Ltd | Transport & logistics | 2024 |
| Feathered Nest Ltd | Real estate | 2019 |
| FEB Properties Midd Ltd | Real estate | 2021 |
| February Properties Ltd | Real estate | 2018 |
| Feden Limited | Health & social care | 2024 |
| Fedenss Limited | Other services | 2014 |