| Elennay Limited | Information & communication | 2026 |
| Elevation Digital Ltd | Professional & scientific | 2013 |
| Elite Juniors Kickboxing Ltd | Arts & recreation | 2023 |
| Elite KIT Ltd | Wholesale & retail | 2023 |
| Elite Ladies Dance Limited | Arts & recreation | 2023 |
| Elite Ladies Growth Days Ltd | Other services | 2024 |
| Elite Ladies Kickboxing Essex Ltd | Arts & recreation | 2025 |
| Elite Ladies Kickboxing Ltd | Arts & recreation | 2020 |
| Elite Ladies Yoga Ltd | Education | 2026 |
| Elite Project Solutions Limited | Professional & scientific | 2013 |
| Elite Training Camps Ltd | Arts & recreation | 2023 |
| Elitest IT Ltd | Information & communication | 2016 |
| Elizabeth Walmsley Cleaning Limited | Administrative & support | 2023 |
| Elms Property Solutions Ltd | Real estate | 2013 |
| ELS Installations Ltd | Construction | 2021 |
| Elysium Woodworking Ltd | Manufacturing | 2014 |
| Ember Hound Ltd | Information & communication | 2026 |
| Ememes Limited | Professional & scientific | 2006 |
| Emerald Chauffeur Services Limited | Administrative & support | 2023 |
| Emma Lavelle Racing Limited | Arts & recreation | 2004 |
| Emotion Productions Ltd | Information & communication | 2021 |
| Empower and Grow Ltd | Health & social care | 2020 |
| Encipher Consulting Ltd | Information & communication | 2022 |
| Energy & Mine Investments Ltd | Professional & scientific | 2000 |
| Enfranchise 320 Limited | Wholesale & retail | 1999 |
| Ensign (U.K.) Limited | Manufacturing | 1987 |
| Eopm Projects Ltd | Professional & scientific | 2016 |
| Epona Therapy Limited | Professional & scientific | 2015 |
| Epoxy Technology Europe Limited | Other services | 2013 |
| Equacore Solutions Ltd | Professional & scientific | 2021 |
| Equest Limited | Professional & scientific | 2011 |
| ER Corporate Ventures Ltd | Energy | 2022 |
| ER New Projects 1 Limited | Energy | 2023 |
| ER New Projects 2 Limited | Energy | 2024 |
| ER New Projects 3 Limited | Energy | 2026 |
| ER Project Development Co Limited | Energy | 2022 |
| Ergo ERP Limited | Information & communication | 2008 |
| Ethereal Limited | Real estate | 2024 |
| Etherealflo Ltd | Health & social care | 2023 |
| Evexia Technologies Limited | Professional & scientific | 2024 |
| EVS Elite Vehicle Services Ltd | Administrative & support | 2016 |
| Excalibur Academies Services Ltd | Hospitality | 2021 |
| Excalibur Academies Trust | Education | 2012 |
| Exepex Estates Limited | Construction | 1947 |
| Expert Tours People & Places Limited | Administrative & support | 1999 |
| EZE Content Ltd | Information & communication | 2009 |
| F & R Brickwork Limited | Construction | 2017 |
| F1 IT Ltd | Information & communication | 2016 |
| Fabeliz Services Limited | Health & social care | 2014 |
| Facilligent Limited | Information & communication | 2013 |
| Fairbank Crane Hire Ltd | Administrative & support | 2020 |
| Fallbase Holdings Limited | Financial services | 2016 |
| Family Copies Limited | Manufacturing | 2018 |
| FAR CRY Studios Ltd | Professional & scientific | 2016 |
| Farmshopathome Limited | Wholesale & retail | 2007 |
| Farrah & EVE Paper Co. Ltd | Manufacturing | 2024 |
| Fearful Symmetry Limited | Information & communication | 2021 |
| Fentiman Design Limited | Professional & scientific | 2015 |
| Fera Outfitters Ltd | Manufacturing | 2018 |
| Fermoie Holdings Limited | Manufacturing | 2021 |
| Fermoie Limited | Manufacturing | 2016 |
| FH Kennels Holdings Ltd | Real estate | 2024 |
| Financial Insight Ltd | Professional & scientific | 2017 |
| Finhedge Software Services Limited | Information & communication | 2014 |
| Finspeak Ltd | Professional & scientific | 2013 |
| First Base Construction Limited | Construction | 2014 |
| First Ideas Limited | Information & communication | 2014 |
| First Water Ramsbury Limited | Manufacturing | 2002 |
| Fisher Acqusitions Ltd | Real estate | 2026 |
| Fisherman FILM2 Limited | Information & communication | 2020 |
| Fishlock and Dyer Limited | Construction | 2020 |
| Fishlock Holdings Ltd | Construction | 1995 |
| Fit 100 Limited | Arts & recreation | 2017 |
| Fitton & Co Ltd | Financial services | 2009 |
| Five Alls Limited | Administrative & support | 2004 |
| Fleming IP Holdings Ltd | Professional & scientific | 2022 |
| Flow Energy Group Ltd | Construction | 2023 |
| Flow State Life Ltd | Education | 2026 |
| Flux FX Ltd | Information & communication | 2015 |
| Focused Steps Ltd | Professional & scientific | 2020 |
| Foil and Sabre Ltd | Professional & scientific | 2025 |
| Force for Nature Ltd | Information & communication | 2020 |
| Force Technologies Limited | Wholesale & retail | 1986 |
| Forest Hill Farms Limited | Agriculture & fishing | 2012 |
| Forge Theorem Limited | Information & communication | 2025 |
| Forslan Hydro LLP | | 2008 |
| Fortitude Specialist Electrical Contractors Holdings Ltd | Financial services | 2023 |
| Fortitude Specialist Electrical Contractors Ltd | Construction | 2002 |
| Fosbury Church Limited | Administrative & support | 2014 |
| Foundercatalyst Holdings Ltd | Financial services | 2020 |
| Foundercatalyst IP Ltd | Financial services | 2020 |
| Foundresourcing Ltd | Administrative & support | 2019 |
| FOX Tower Holdings Ltd | Real estate | 2021 |
| Foxglove Botanical Limited | Wholesale & retail | 2025 |
| Framework AI Limited | Information & communication | 2025 |
| Francis Carpentry Limited | Construction | 2015 |
| Fred Film Production Limited | Information & communication | 2013 |
| Fred Films Colonia Limited | Information & communication | 2002 |
| Freedom Eyecare Limited | Professional & scientific | 2005 |
| Fresnel Ltd | Administrative & support | 2015 |