| Equinxt Ltd | Financial services | 2025 |
| Equity Roofing Limited | Construction | 2021 |
| ER Vision Ltd | Construction | 2022 |
| Ergosonics Limited | Information & communication | 2004 |
| Eritaj Limited | Other services | 2022 |
| ES Estate Agent Limited | Real estate | 2021 |
| Esdcom Co., Ltd | Administrative & support | 2023 |
| Eshine Import and Export Trading Co., Ltd | Wholesale & retail | 2024 |
| Eshmun AI Ltd | Information & communication | 2026 |
| Esprouty Consulting PVT Ltd | Information & communication | 2016 |
| ESS (2022) Limited | Financial services | 2022 |
| Essence (Yiewsley) Management Company Limited | Households | 2010 |
| Essencecraft International Ltd | Wholesale & retail | 2024 |
| Essex Metalwork Installation Limited | Construction | 2021 |
| Estate Maintenance (Harrow) Limited | | 1963 |
| Estima Scientific Ltd | Information & communication | 2019 |
| Estival Limited | Real estate | 2004 |
| Estmanco (Brentford Dock) Limited | Professional & scientific | 1999 |
| Estoril One Limited | Information & communication | 2020 |
| Esuyi Technology Co., Ltd | Administrative & support | 2023 |
| ETA Inter-Company Limited | Financial services | 2016 |
| Eternal Memorial Glass Ltd | Other services | 2026 |
| Ethereum Enterprises Ltd | Financial services | 2020 |
| Ethos&I Ltd | Health & social care | 2024 |
| Ethov Ltd | Wholesale & retail | 2023 |
| Eureka Mobile Advertising Ltd | Information & communication | 2011 |
| Euro Deco Co., Ltd | Wholesale & retail | 2021 |
| Euro Shopfronts & Shutters Ltd | Construction | 2019 |
| Euro Steel Stock Holders Ltd | Construction | 2018 |
| European College of Studies and Research Ltd | Education | 2024 |
| European Massage Limited | Other services | 2023 |
| European Organization for International Diplomacy Ltd | Education | 2024 |
| Evamber Limited | Information & communication | 2003 |
| Eveil&Nous Ltd | Information & communication | 2023 |
| Evelyn Oaks Ltd | Professional & scientific | 2025 |
| Evenlode Systems Limited | Administrative & support | 2019 |
| Events Hire Centre Ltd | Construction | 2017 |
| Evershine Products Ltd | Wholesale & retail | 2024 |
| Evidensity Ltd | Professional & scientific | 2026 |
| Evil EYE Universe Limited | Wholesale & retail | 2024 |
| Evolutionz Ltd | Health & social care | 2022 |
| Evolving Beauty Limited | Information & communication | 2011 |
| Evolvure Property Services London Limited | Other services | 2020 |
| EVP Electrical Ltd | Construction | 2019 |
| EVS NB Limited | Information & communication | 2025 |
| EVY Marie Limited | Other services | 2024 |
| Exaloa Ltd | Information & communication | 2026 |
| Excellence Holding Ltd | Financial services | 2024 |
| Exchange Squared Limited | Wholesale & retail | 2018 |
| Exchester Ltd | Information & communication | 2020 |
| Execassist (Business Consultancy) Limited | Administrative & support | 2024 |
| Executive Roofing and Building Ltd | Construction | 2025 |
| Exelis Real Estate Ltd | Real estate | 2024 |
| Exeter Roofing & Guttering Limited | Construction | 2024 |
| Exkluse Ltd | Information & communication | 2015 |
| EXLR8 Ltd | Administrative & support | 2017 |
| Exora Medical Limited | Transport & logistics | 2022 |
| Explorabilia Ltd | Administrative & support | 2016 |
| Exploron Ltd | Professional & scientific | 2020 |
| Exportech (UK) Ltd | Wholesale & retail | 2012 |
| Exposoft Trade LLP | | 2010 |
| Express Logistics London Ltd | Transport & logistics | 2021 |
| Express Stone and Granite Ltd | Wholesale & retail | 2025 |
| Extreme Backlink Ltd | Information & communication | 2024 |
| Eylul the 15TH Limited | Hospitality | 2019 |
| EZY Access Ltd | Wholesale & retail | 2022 |
| EZY Access Windows Ltd | Construction | 2025 |
| F Smith & Sons Ltd | Construction | 2025 |
| F&A Hotels Limited | Financial services | 2018 |
| F&B Investment Consultancy Ltd | Financial services | 2025 |
| F&J Property Maintenance Ltd | Construction | 2020 |
| F&M Group Limited | Other services | 2021 |
| F.A.O. N Somaiya Limited | Administrative & support | 2011 |
| Facile Academy Ltd | Wholesale & retail | 2025 |
| FAE Collective Ltd | Arts & recreation | 2025 |
| Fair Retail Adventures Ltd | Wholesale & retail | 2014 |
| Fairacres Properties Ltd | Real estate | 2020 |
| Fairbright Management Limited | Real estate | 2019 |
| Fairdale Metal Tools Co., Ltd | Manufacturing | 2020 |
| Fairmark Group Limited | Manufacturing | 2023 |
| Fairmont Construction Ltd | Construction | 2021 |
| Fairview Crescent Ltd | Real estate | 2014 |
| Fairview Hotels (Cardiff North) Limited | Hospitality | 2018 |
| Fairyfairs Ltd | Wholesale & retail | 2019 |
| Famillion Records Limited | Information & communication | 2013 |
| Fantastic Technology Limited | Administrative & support | 2020 |
| FAR East Food Ltd | Hospitality | 2012 |
| Farlina Investments Limited | Real estate | 2004 |
| Farm House Pizza (Ruislip) Ltd | Hospitality | 2017 |
| Farnham Rental Homes Ltd | Real estate | 2026 |
| Farr Finance Limited | Financial services | 2003 |
| Fashion Tree Ltd | Wholesale & retail | 2010 |
| Fast Analysts Ltd | Financial services | 2005 |
| Fast Renovation London Limited | Construction | 2025 |
| Fastrack Tours Limited | Administrative & support | 2026 |
| Fazaha Properties Limited | Real estate | 2021 |
| Fazal Fast Foods Limited | Hospitality | 1984 |
| FC Business Development and Management Limited | Professional & scientific | 2017 |
| FCT Design & Build Limited | Construction | 2021 |
| Fedapay International Ltd | Information & communication | 2019 |