| Erika Transport Services Ltd | Transport & logistics | 2016 |
| Erin's Bar Restaurant Lakes & Lodges Ltd | Construction | 2021 |
| Erudyte Limited | Extraterritorial | 2017 |
| Esat Ltd | Administrative & support | 2021 |
| ESM Foods Ltd | Wholesale & retail | 2025 |
| Essential Staffing Limited | Administrative & support | 2016 |
| Esteem (UK) Ltd | Construction | 2002 |
| Esther Esteem CIC | Education | 2025 |
| Etints Ltd | Wholesale & retail | 2017 |
| EU Direct Limited | Transport & logistics | 2008 |
| EU International Food & Drink Ltd | Wholesale & retail | 2018 |
| Euro INT Foods Limited | Wholesale & retail | 2009 |
| EUROCARWASH2025 Ltd | Administrative & support | 2025 |
| Europe Car Ventures Ltd | Wholesale & retail | 2013 |
| Europe Tyres Limited | Wholesale & retail | 2013 |
| European Food and Wine Limited | Wholesale & retail | 2009 |
| European Market Boston Ltd | Wholesale & retail | 2019 |
| European Tyres Limited | Wholesale & retail | 2012 |
| EVA Melania Transport Ltd | Transport & logistics | 2026 |
| Evelyn& David Transport Ltd | Transport & logistics | 2024 |
| Eventexquisite Ltd. | Arts & recreation | 2011 |
| Ever&More Ltd | Wholesale & retail | 2025 |
| Evergreen Car Parts Ltd | Wholesale & retail | 2025 |
| Everguard Roofing and Guttering Ltd | Construction | 2025 |
| Evgentransport Ltd | Transport & logistics | 2024 |
| Evis Property Ltd | Real estate | 2026 |
| Evlo Holdings Ltd | Financial services | 2024 |
| EVO Foods Limited | Wholesale & retail | 2017 |
| Exclusive Physio Services Limited | Health & social care | 2025 |
| Executive Resourcing Global Limited | Administrative & support | 2010 |
| Extravaganza Productions Ltd | Arts & recreation | 2007 |
| F and S Cosmetics Limited | Health & social care | 2026 |
| F Craven & Sons Limited | Agriculture & fishing | 1995 |
| F E Addlesee & SON Limited | Other services | 2013 |
| F W Architectural Hardware Limited | Wholesale & retail | 2002 |
| F. L. Jewellery Limited | Wholesale & retail | 2020 |
| F.O Twenty Eight Ltd | Hospitality | 2022 |
| F.W. Feary (Contractors) Limited | Extraterritorial | 2005 |
| F1 Retail Limited | Manufacturing | 2011 |
| FA Cropley & SON Limited | Agriculture & fishing | 2000 |
| Fairfield Lounge Limited | Hospitality | 2016 |
| Fairway Engineering and Project Services Ltd | Professional & scientific | 2020 |
| Fairweather Estate Agents Ltd | Real estate | 2016 |
| Falcon Global Logistics Ltd | Wholesale & retail | 2025 |
| Family Rental Solution Ltd | Real estate | 2023 |
| Fancy Creations Ltd | Arts & recreation | 2023 |
| Fankaaexport Limited | Wholesale & retail | 2025 |
| Fantasy Flowers Ltd | Wholesale & retail | 2019 |
| Fashion Ladies Ltd | Wholesale & retail | 2025 |
| FAT BOY Ltd | Hospitality | 2024 |
| Favour Lebari Medics Ltd | Health & social care | 2025 |
| FCA Leisure Limited | Other services | 2016 |
| Feed RAW Ltd | Manufacturing | 2025 |
| Felicia Marine Services Limited | Transport & logistics | 2010 |
| FEN Acres Development Limited | Real estate | 2019 |
| FEN Oak Escapes Ltd | Hospitality | 2023 |
| FEN Peas Limited | Agriculture & fishing | 1968 |
| Fenbrooke Investments Ltd | Real estate | 2024 |
| Fender Consulting Ltd | Professional & scientific | 2015 |
| Fenfields Management Limited | Manufacturing | 2015 |
| Fenix Employment Limited | Administrative & support | 2021 |
| Fenland Blasting & Painting Ltd | Manufacturing | 2013 |
| Fenland Electrical Ltd | Construction | 2025 |
| Fenland Farm Services Ltd | Agriculture & fishing | 2024 |
| Fenland Property Maintenance Limited | Construction | 2007 |
| Fenland Retreat Limited | Hospitality | 2026 |
| Fenny Group Limited | Real estate | 2017 |
| Fenny Holdings Limited | Professional & scientific | 2017 |
| Fenny Marina Ltd. | Hospitality | 2003 |
| Fenside Accounting LLP | | 2004 |
| Fenside Community Centre | Education | 2006 |
| Fenwold Waters Ltd | Agriculture & fishing | 2026 |
| Fgytrans Ltd | Transport & logistics | 2025 |
| FH Empress Avenue Ltd | Real estate | 2023 |
| FH Furniture Ltd | Wholesale & retail | 2023 |
| Fibreglass Roof Master Ltd | Construction | 2011 |
| Fibreworx Roofing Ltd | Construction | 2017 |
| Field-Marshall Tractors Limited | Wholesale & retail | 2000 |
| Fieldjoin Property Management Limited | Real estate | 1990 |
| Fika Fika Ltd | Hospitality | 2024 |
| Fiksu, Inc. | | 2011 |
| Finnell Holdings Ltd | Financial services | 2024 |
| Finnforest Pension Trustees Ltd | Financial services | 1995 |
| Fire & Feast Events Ltd | Hospitality | 2025 |
| Fire Dept Limited | Information & communication | 2022 |
| Firefly Solutions Ltd | Wholesale & retail | 2023 |
| First Capital Independent Financial Advisers Limited | Financial services | 2008 |
| First Rate Flat Roofing Ltd | Construction | 2018 |
| First Rate Material Solutions Ltd | Wholesale & retail | 2022 |
| First Rate Properties (Boston) Ltd | Real estate | 2021 |
| Firth Brother Developments Limited | Construction | 2016 |
| Fishan Limited | Hospitality | 2025 |
| Fishtoft Doctors Ltd | Health & social care | 2019 |
| Fitzwilliam Works Realty I, LP | | 2023 |
| Fitzwilliam Works Realty II, LP | | 2023 |
| FJW Logistics 24/7 Ltd | Transport & logistics | 2025 |
| Flame Lily Ltd | Public administration | 2024 |
| Flardinga Holdings Limited | Financial services | 2025 |
| Flitz Solutions Ltd | Wholesale & retail | 2025 |
| FLN JUJ Ltd | Construction | 2025 |