| Ethertech Limited | Information & communication | 2017 |
| Ethical Resource Ltd | Administrative & support | 2025 |
| ETT - Active Headset Limited | Professional & scientific | 2024 |
| Etwall (Midlands) Limited | Wholesale & retail | 2016 |
| EU Parcel Express Ltd | Transport & logistics | 2023 |
| EU Vape Kettering Ltd | Wholesale & retail | 2026 |
| Eunice Artisan Bakery Shop Kettering Limited | Wholesale & retail | 2024 |
| Euro Mini Ltd | Wholesale & retail | 2023 |
| Europe Plus Ltd | Wholesale & retail | 2021 |
| Europhealth Ltd | Administrative & support | 2011 |
| Euroroof Limited | Extraterritorial | 1928 |
| EV2G Systems Ltd | Construction | 2026 |
| EVE IT Limited | Wholesale & retail | 2021 |
| Event Productions UK Limited | Arts & recreation | 2025 |
| Everest Online Ltd | Wholesale & retail | 2025 |
| Evergracestudio Ltd | Professional & scientific | 2025 |
| Evergreen Living Limited | Construction | 2010 |
| Everleigh Homes Ltd | Real estate | 2024 |
| Everyday Wear Ltd | Wholesale & retail | 2026 |
| EVL Properties Ltd | Real estate | 2022 |
| Evolution Estate Developments Ltd | Real estate | 2016 |
| Evolve Denim Atelier CIC | Water & waste | 2026 |
| Evsal Limited | Wholesale & retail | 2022 |
| EW Financial Services Limited | Financial services | 2018 |
| Ewelina Dybich Consulting Limited | Professional & scientific | 2025 |
| Exclusive Adventures Limited | Extraterritorial | 1998 |
| Exclusive Americas Limited | Administrative & support | 1997 |
| Exdelco Limited | Real estate | 2013 |
| Executive Leadership Limited | Professional & scientific | 2024 |
| Exile Supplements Ltd | Manufacturing | 2025 |
| Eximgo Ltd | Extraterritorial | 2008 |
| Exotek Limited | Real estate | 2009 |
| Expert-Mep Ltd | Construction | 1999 |
| Express Construct Limited | Construction | 2017 |
| Exton Estimating Ltd | Professional & scientific | 2019 |
| Extraction Services Limited | Water & waste | 2017 |
| EYE CAN Ltd | Professional & scientific | 2017 |
| EYE Chippy Ltd | Hospitality | 2024 |
| Eyebury Trucks Limited | Wholesale & retail | 1972 |
| F W Tees Limited | Wholesale & retail | 1997 |
| F&F Contracting Ltd | Construction | 2021 |
| F&F Moves Limited | Transport & logistics | 2025 |
| F.E.M. Motors Ltd | Wholesale & retail | 2023 |
| F17 Holdings Limited | Financial services | 2022 |
| FAB Automotive Ltd | Wholesale & retail | 2009 |
| Fabernova Ltd | Manufacturing | 2025 |
| Fabria Limited | Hospitality | 2018 |
| Fabzone Limited | Administrative & support | 2006 |
| FACUP2021 Limited | Financial services | 2023 |
| Fade Empire Limited | Other services | 2024 |
| Fadzi Ltd | Health & social care | 2013 |
| Fahy Ltd | Wholesale & retail | 2021 |
| Faiza Spice Bar Limited | Hospitality | 2024 |
| Falcon Xbleed Ltd | Transport & logistics | 2024 |
| Fallstreak Consulting Limited | Information & communication | 2013 |
| Family First Housing Ltd | Real estate | 2015 |
| Family First Investments Limited | Real estate | 2023 |
| Family Tree Properties Limited | Real estate | 2016 |
| Fana Enterprises Limited | Financial services | 2012 |
| Fangorn Group Limited | Professional & scientific | 2021 |
| FAR East Glory Ltd | Arts & recreation | 2024 |
| FAR East Property Ltd | Real estate | 2024 |
| Farm & Garden Central Limited | Wholesale & retail | 2018 |
| Farooq Mufti Associates Limited | Professional & scientific | 2026 |
| Farrance Homes Ltd | Households | 2024 |
| Fast Automotive Ltd | Transport & logistics | 2017 |
| Fast FIX Electrical Solutions Ltd | Manufacturing | 2024 |
| Fast Performance Direct Ltd | Wholesale & retail | 2019 |
| Fast Towel Ltd | Wholesale & retail | 2018 |
| Fastaim Limited | Administrative & support | 1995 |
| Fastline Group (Holdings) Limited | Financial services | 2025 |
| Fastline Group (Topco) Limited | Financial services | 2025 |
| Fatboysfish&Chips Ltd | Hospitality | 2025 |
| Fatsal Global Limited | Households | 2025 |
| Favrytz Studios Ltd | Information & communication | 2026 |
| Fawns Recreational Services Limited | Manufacturing | 1999 |
| Faylet Limited | Administrative & support | 2016 |
| Fazik Ltd | Transport & logistics | 2019 |
| Fbjk Ltd | Hospitality | 2025 |
| FCV Maintenance Ltd | Households | 2021 |
| Felix Companies Ltd | Wholesale & retail | 2026 |
| Feng's Oriental Express Limited | Hospitality | 2026 |
| Fengru Developments Ltd | Construction | 2014 |
| Fermynwoods Contemporary Art Limited | Arts & recreation | 2005 |
| Fern Health Limited | Financial services | 2017 |
| Fern Prop Ltd | Real estate | 2026 |
| Fernbank Flat Roofing Limited | Construction | 2022 |
| Fernbrook BIO Limited | Water & waste | 2008 |
| Ferrigno & Partners Limited | Administrative & support | 2020 |
| Fewtures Limited | Education | 2026 |
| FF Estate Holdings Ltd | Professional & scientific | 2024 |
| FF Private Capital Ltd | Financial services | 2021 |
| FGN Steel Work Ltd | Construction | 2025 |
| Fidelity IT Ltd | Professional & scientific | 2023 |
| Fiflok Ltd | Wholesale & retail | 2021 |
| Filary Ltd | Transport & logistics | 2020 |
| Filly and FOX Ltd. | Wholesale & retail | 2022 |
| Finance for Property Ltd | Financial services | 2021 |
| Finance Recruit Ltd | Administrative & support | 2024 |
| Financial Compliance Consulting Ltd | Professional & scientific | 2023 |