| Exotic Cuisine Limited | Hospitality | 2019 |
| EXP Logistics Ltd | Transport & logistics | 2017 |
| Expeditious Response Locksmith Limited | Administrative & support | 2020 |
| Expert Focus Ltd | Professional & scientific | 2019 |
| Expert Tiling & Stone Ltd | Construction | 2020 |
| Express Courier Ltd | Construction | 2021 |
| Express Finance Limited | Extraterritorial | 1994 |
| Express Logistics Global Ltd | Transport & logistics | 2024 |
| Express Roofing & Guttering Ltd | Construction | 2024 |
| Exterior Pro Cleaning Ltd | Administrative & support | 2022 |
| EYE for Detail Building Services Ltd | Construction | 2020 |
| Eyesee Optical Ltd | Health & social care | 2012 |
| Eynaolive Ltd | Hospitality | 2026 |
| EZE Quality Services Ltd | Construction | 2023 |
| Ezragen Ltd | Real estate | 2024 |
| F & G Accountancy Limited | Professional & scientific | 2020 |
| F & G Training Limited | Education | 2017 |
| F & S Basildon Limited | Wholesale & retail | 2017 |
| F & S Properties (Holdings) Ltd | Financial services | 2021 |
| F & S Properties Ltd | Real estate | 1999 |
| F and S Companion Services Ltd | Administrative & support | 2026 |
| F S Mackenzie Limited | Transport & logistics | 1970 |
| F S Steel Erectors Limited | Construction | 2014 |
| F. Leroy & Company (Essex) Limited | Construction | 2010 |
| F.H Services Essex Ltd | Transport & logistics | 2016 |
| F.Peterson Pipework Limited | Construction | 2026 |
| F.W. Russell (Gauges) Limited | Manufacturing | 1975 |
| F.W.J. Walker & Sons (Metals) Limited | Real estate | 1974 |
| FA Tiling Limited | Construction | 2023 |
| FAB Components Limited | Wholesale & retail | 2014 |
| Fabby WAX Limited | Other services | 2025 |
| Fabfireprotection Ltd | Construction | 2026 |
| Facade & Build Ltd | Construction | 2021 |
| Facilities First LLP | | 2014 |
| Facilitycare Solutions Ltd | Administrative & support | 2025 |
| Factory Door Services Limited | Construction | 2011 |
| Faefa Consulting Ltd | Transport & logistics | 2011 |
| Faesk Services Ltd | Health & social care | 2026 |
| Fagus Holdco PLC | Financial services | 2022 |
| Fairclough Building Limited | Construction | 2008 |
| Faircroft Fire & Security Ltd | Public administration | 2022 |
| Fairdeal Renovations Limited | Construction | 2023 |
| Faire Sans Dire Consulting Services Limited | Information & communication | 2016 |
| Fairfax Computing Limited | Information & communication | 2001 |
| Fairfield M&S Consultancy Limited | Professional & scientific | 2015 |
| Fairmead M.O.T Centre Limited | Wholesale & retail | 2014 |
| Fairway Accountancy Ltd | Professional & scientific | 2023 |
| Fairways Limited | Arts & recreation | 1996 |
| Fairwood Marketing Ltd | Administrative & support | 2015 |
| Faith Engineering Limited | Professional & scientific | 2012 |
| Faith in Gardens Limited | Administrative & support | 2026 |
| Fakealicious Limited | Other services | 2022 |
| Fakealicious Mentoring Limited | Other services | 2026 |
| Fakealicious Training Academy Limited | Other services | 2019 |
| Falcon Engineering Systems Limited | Construction | 2018 |
| Falowe Limited | Wholesale & retail | 2024 |
| Family Comfort Rentals Ltd | Real estate | 2024 |
| Family Passel | Education | 2018 |
| FAN Curier Ltd Ltd | Transport & logistics | 2026 |
| Fans Network Ltd | Information & communication | 2006 |
| Fanshawe Group Ltd | Construction | 2019 |
| Fanshawe MEP UK Limited | Construction | 2026 |
| Fanshawe Property Services Limited | Construction | 2026 |
| Fantastic Car Crafts Ltd | Wholesale & retail | 2025 |
| Fantastic Care Ltd | Public administration | 2025 |
| Fantie Beauty Ltd | Wholesale & retail | 2024 |
| Fantom Ltd | Wholesale & retail | 2025 |
| Faqiang Q Ltd | Wholesale & retail | 2025 |
| Faraday Woods Limited | Manufacturing | 2025 |
| Farankine Limited | Real estate | 2025 |
| Farello’S Ltd | Hospitality | 2025 |
| Fareprice Contracts Ltd | Administrative & support | 2020 |
| Farland Ltd | Construction | 2018 |
| Farm Pizza Ltd | Hospitality | 2017 |
| Farren Krew Limited | Construction | 2020 |
| Farthingwood Limited | Information & communication | 2020 |
| Farussav Limited | Manufacturing | 2021 |
| Fascook Limited | Wholesale & retail | 2022 |
| Fashion Haus Clothing Ltd | Wholesale & retail | 2019 |
| Fashion Malle (London) Limited | Wholesale & retail | 2016 |
| Fast Corporation Ltd | Professional & scientific | 2011 |
| Faster Teechnology Limited | Wholesale & retail | 2026 |
| Fastmovex Removals Ltd | Transport & logistics | 2025 |
| Fastwarm Limited | Other services | 2020 |
| FAT Boyz Diner Ltd | Hospitality | 2016 |
| FAT Goose Property Developments Limited | Construction | 2016 |
| Fauna Cottage Limited | Hospitality | 2021 |
| Favour Care Limited | Public administration | 2020 |
| Favouredlife Services Limited | Information & communication | 2022 |
| Fawkes NDT Services Ltd | Professional & scientific | 2023 |
| FAY Estates Ltd | Real estate | 2026 |
| FAY Services Ltd | Professional & scientific | 2020 |
| Faye's Intentional Training Ltd | Arts & recreation | 2024 |
| Fayeh Developments Ltd | Professional & scientific | 2025 |
| Fazin Healthcare Limited | Health & social care | 2016 |
| FB Accountancy Services Limited | Professional & scientific | 2009 |
| FBA Fusion Ltd | Wholesale & retail | 2025 |
| Fbavailable Ltd | Professional & scientific | 2022 |
| FBP Capital Limited | Financial services | 2020 |
| FBR Mechanical Limited | Construction | 2025 |