| Dillon Construction Ltd | Construction | 2015 |
| Discover Energy Limited | Agriculture & fishing | 2025 |
| Discover Home Limited | Real estate | 2018 |
| Djdl Chinese Ltd | Hospitality | 2025 |
| DJF Facilities Services Ltd | Other services | 2023 |
| DJH Commissioning Limited | Construction | 2025 |
| DK Trading Limited | Financial services | 2009 |
| DLC Haulage Ltd | Water & waste | 2021 |
| Dlockwood Developments Ltd | Construction | 2025 |
| Dlpt Ltd | Other services | 2021 |
| DM Express Ltd | Transport & logistics | 2026 |
| DO IT ALL Limited | Wholesale & retail | 2021 |
| Dodo Juice Limited | Wholesale & retail | 2007 |
| Doer Cycles Ltd | Other services | 2015 |
| Dotao Limited | Information & communication | 2015 |
| Downham Market Developments Limited | Construction | 2022 |
| Downlands Water Storage UK Ltd | Construction | 2026 |
| Dplm Limited | Health & social care | 2024 |
| Dragon Inn Richmond Limited | Hospitality | 2022 |
| Drake (Rochdale) Limited | Wholesale & retail | 2003 |
| Dream Catcher Weddings Ltd | Information & communication | 2019 |
| Dreamteamsoft | Information & communication | 2012 |
| Dreizack Counselling and Consultancy Limited | Health & social care | 2023 |
| Dress Box Ltd | Wholesale & retail | 2011 |
| Drinks Boxx Company Limited | Wholesale & retail | 2016 |
| DRY Ice Restoration Ltd | Administrative & support | 2018 |
| DSO Engineering Ltd | Energy | 2025 |
| DTS Home Solutions Ltd | Construction | 2019 |
| DTS Housing Solutions Ltd | Real estate | 2023 |
| Ducu Florin Ltd | Transport & logistics | 2018 |
| Dunmow Business Centre LLP | | 2010 |
| Dunmow CM6 Ltd | Hospitality | 2025 |
| Dunmow Coachworks Limited | Wholesale & retail | 2010 |
| Dunmow Convenience Stores Ltd | Wholesale & retail | 2006 |
| Dunmow Electrical Ltd | Construction | 2024 |
| Dunmow Grill Ltd | Hospitality | 2018 |
| Dunmow Maintenance Limited | Construction | 2015 |
| Dunmow Motor Services Limited | Wholesale & retail | 2002 |
| Dunmow Music Club Ltd | Arts & recreation | 2022 |
| Dunmow Permanent Makeup Ltd | Other services | 2021 |
| Dunmow Plant Hire & Repairs Ltd | Administrative & support | 2014 |
| Dunmow Property Maintenance Limited | Construction | 2017 |
| Dunmow Valeting Ltd | Other services | 2021 |
| Duton Hill Community Association | Other services | 2026 |
| DW Surfaces Limited | Construction | 2025 |
| Dynamite Production Support Limited | Transport & logistics | 2020 |
| E H Archer & SON Limited | Construction | 2008 |
| E W Property Maintenance Ltd | Construction | 2012 |
| E&F Consultancy Limited | Professional & scientific | 2012 |
| E-Mead Consulting Limited | Professional & scientific | 2004 |
| E.W.Davies Farms Limited | Agriculture & fishing | 1954 |
| Each for ALL Productions Limited | Information & communication | 1995 |
| Eago UK Ltd | Professional & scientific | 2025 |
| Eahq Consultancy Limited | Professional & scientific | 2023 |
| East Anglia Fire Protection Ltd | Administrative & support | 2008 |
| Eastern Fire & Security Services Ltd | Administrative & support | 2005 |
| Eastern House Financial Ltd | Professional & scientific | 2023 |
| Eastern Thespians Wimbledon Limited | Arts & recreation | 2022 |
| Easton Elite Cars Limited | Transport & logistics | 2019 |
| Easy Lawns & Landscaping Ltd | Administrative & support | 2026 |
| EBC Fitness Holdings Limited | Financial services | 2013 |
| EBC Fitness Limited | Arts & recreation | 2010 |
| Eco Plan Environmental Limited | Water & waste | 2019 |
| Economic Development Corporation Limited | Other services | 2002 |
| ED Finishes Ltd | Construction | 2025 |
| Edwina Investments Limited | Financial services | 1956 |
| EEB Properties LLP | | 2006 |
| Effective People Solutons Limited | Administrative & support | 2018 |
| Effects Decorating Services Limited | Construction | 2007 |
| EGH Trading Ltd | Wholesale & retail | 2020 |
| Ehon Limited | Transport & logistics | 2018 |
| EIB Consult Ltd | Professional & scientific | 2024 |
| Eightyfive Consultancy Ltd | Professional & scientific | 2022 |
| Ejpl Limited | Manufacturing | 2011 |
| EJS Electrical Services Ltd | Construction | 2022 |
| Elaron Services Limited | Construction | 2021 |
| Elbow Creative Ltd | Information & communication | 2010 |
| Eldon Projects Limited | Construction | 2026 |
| Electric Fields Contractors Limited | Construction | 2017 |
| Electric Fields Limited | Construction | 2012 |
| Electric Footprint Limited | Professional & scientific | 2015 |
| Elephant Investments Ltd | Real estate | 2022 |
| Eleven Ltd | Construction | 2026 |
| Elite Commercial Estates Ltd | Water & waste | 2021 |
| Elite Lofts (Essex) Limited | Construction | 2002 |
| Elite Prestige Limited | Wholesale & retail | 2009 |
| Elite Smoke Ventilation Ltd | Construction | 2023 |
| Elitrade Limited | Other services | 2015 |
| ELM Installations Ltd | Manufacturing | 2016 |
| Elmec International Sales Limited | Wholesale & retail | 1997 |
| Elmscroft Management Limited | Real estate | 2008 |
| Elsdon & Sons Limited | Manufacturing | 2011 |
| Elsworth Ethanol Company Limited | Manufacturing | 2002 |
| Emerald EV Limited | Construction | 2023 |
| Emik Sunny Days Ltd | Energy | 2020 |
| Emma Elizabeth Celebrant Ltd | Other services | 2025 |
| Emma Raducanu Enterprises Limited | Other services | 2023 |
| Endless Aura Ltd | Extraterritorial | 2018 |
| Engineering Services & Solutions (ESS) Ltd | Manufacturing | 2019 |
| Enigma Key Limited | Information & communication | 2014 |