| Falsework Ltd | Construction | 2017 |
| FAM Drive Logistics Ltd | Transport & logistics | 2025 |
| FAM Estates Ltd | Real estate | 2025 |
| Fama Consultancy Ltd | Professional & scientific | 2015 |
| Famander Limited | Real estate | 1991 |
| Famatec Ltd | Wholesale & retail | 2025 |
| Famcore Ltd | Extraterritorial | 2025 |
| Fame MMA UK Ltd | Arts & recreation | 2019 |
| Famed and Framed Limited | Manufacturing | 2025 |
| Fameos Property Network Ltd | Hospitality | 2025 |
| Familia House CIC | Agriculture & fishing | 2021 |
| Familiar Independent Ltd | Wholesale & retail | 2024 |
| Familie Hofer Ltd | Extraterritorial | 2023 |
| Familienheimatdw Ltd | Extraterritorial | 2023 |
| Family Choice African Enterprises Ltd | Wholesale & retail | 2025 |
| Family Choice Marketplace UK Limited | Wholesale & retail | 2025 |
| Family Enterprises Ltd | Wholesale & retail | 2021 |
| Family Essentials Limited | Wholesale & retail | 2022 |
| Family Exit UK Ltd | Real estate | 2021 |
| Family Fortunes Limited | Wholesale & retail | 2025 |
| Family Fried Chicken Ltd | Hospitality | 2025 |
| Family Hand Car Wash&Valet Centre Ltd | Other services | 2024 |
| Family Haven Hub CIC | Health & social care | 2026 |
| Family History Books Limited | Information & communication | 2003 |
| Family History Online Limited | Information & communication | 2002 |
| Family House Lettings Limited | Real estate | 2024 |
| Family Law Advice Limited | Professional & scientific | 2022 |
| Family Mini Market Limited | Wholesale & retail | 2026 |
| Family Partners Services Ltd | Wholesale & retail | 2024 |
| Family Refugee Support Project | Health & social care | 2003 |
| Family Shop Ltd | Wholesale & retail | 2024 |
| Family Unity Limited | Health & social care | 2025 |
| Family Wellness Centres Limited | Health & social care | 2009 |
| FAMO5 Ltd | Extraterritorial | 2023 |
| Famous Auto Electrician Ltd | Wholesale & retail | 2019 |
| Famous Fashions Ltd | Wholesale & retail | 2024 |
| Famous Five Limited | Hospitality | 2024 |
| Famous Indian Ltd | Hospitality | 2025 |
| Famous Jackets Ltd | Wholesale & retail | 2022 |
| Famst Ltd | Wholesale & retail | 2024 |
| Famwell Ltd | Administrative & support | 1999 |
| Famy UK for Trading Limited | Hospitality | 2021 |
| FAN Chong & Family Co. Ltd | Wholesale & retail | 2018 |
| FAN Courier Delivery Ltd | Construction | 2022 |
| FAN Drinks Limited | Financial services | 2025 |
| Fanasboxhead Limited | Wholesale & retail | 2025 |
| Fanatics (International) Limited | Wholesale & retail | 2006 |
| Fanazone Ltd | Wholesale & retail | 2025 |
| Fancy Care Limited | Health & social care | 2015 |
| Fancy Dress IT Limited | Wholesale & retail | 2018 |
| Fancy Food Restaurant Limited | Hospitality | 2005 |
| Fancy for Trading Ltd | Wholesale & retail | 2026 |
| Fancy Little Bakes Ltd | Manufacturing | 2021 |
| Fancy Party Store Ltd | Wholesale & retail | 2020 |
| Fancy Trading Limited | Wholesale & retail | 2015 |
| Fandangle Furniture Redesign Limited | Wholesale & retail | 2016 |
| Fandi Capital Plus Trading Ltd | Wholesale & retail | 2026 |
| Fandou Grange Holdings Ltd | Financial services | 2026 |
| Fands Homes Ltd | Real estate | 2025 |
| Fanfair Events Limited | Wholesale & retail | 2016 |
| Fangfang Beauty Limited | Wholesale & retail | 2021 |
| Fangrade Limited | Real estate | 1998 |
| Fania Limited | Professional & scientific | 2016 |
| Fannon Consultancy Limited | Professional & scientific | 2024 |
| Fanpet Ltd | Manufacturing | 2026 |
| Fansco Limited | Construction | 2024 |
| Fanspark Marketing Ltd | Professional & scientific | 2025 |
| FANSW39 Ltd | Wholesale & retail | 2025 |
| Fantacy Trading Ltd | Wholesale & retail | 2026 |
| Fantaisia Ambience Ltd | Information & communication | 2024 |
| Fantastic Facias Limited | Construction | 2020 |
| Fantastic Gift Ideas Company Limited | Wholesale & retail | 2019 |
| Fantasy Beauty Salon Limited | Other services | 2024 |
| Fantom Warrior Limited | Wholesale & retail | 2020 |
| Fantox Ltd | Professional & scientific | 2014 |
| Fanttik Innovation Limited | Wholesale & retail | 2021 |
| Fanxiya International Trading Limited | Wholesale & retail | 2025 |
| FAR Building Designs Ltd | Professional & scientific | 2023 |
| FAR East Consulting Limited | Professional & scientific | 2006 |
| FAR East Ocean (UK) Ltd | Extraterritorial | 2016 |
| FAR Logistics (Felixstowe) Ltd | Transport & logistics | 2015 |
| FAR Logistics (Glasgow) Ltd | Transport & logistics | 2015 |
| FAR Logistics (Heathrow) Ltd | Transport & logistics | 2017 |
| FAR Logistics (Liverpool) Limited | Transport & logistics | 2014 |
| FAR Logistics (Manchester) Ltd | Transport & logistics | 2015 |
| FAR Logistics (Newcastle) Ltd | Transport & logistics | 2022 |
| FAR Logistics (Nottingham) Ltd | Transport & logistics | 2015 |
| FAR Logistics (Retail) Ltd | Transport & logistics | 2026 |
| FAR Logistics (Southampton) Ltd | Transport & logistics | 2015 |
| FAR Logistics (Warrington) Ltd | Transport & logistics | 2015 |
| FAR Logistics Transport Ltd | Transport & logistics | 2021 |
| FAR Ltd | Wholesale & retail | 2020 |
| FAR Optics Ltd | Other services | 2018 |
| FAR OUT and Solid Investments Limited | Real estate | 2002 |
| FAR Pavilion (Carnforth) Ltd | Hospitality | 2014 |
| FAR Residential Ltd | Real estate | 2020 |
| FAR Trek Ltd | Financial services | 2018 |
| Faraday and Little Lever Limited | Real estate | 2020 |
| Faradeem Elite Holdings Limited | Real estate | 2023 |
| Faradeem Elite LUX Ltd | Real estate | 2019 |