| Dlux (UK) Limited | Information & communication | 1995 |
| DLZ Limited | Hospitality | 2003 |
| DM Cost Consulting Ltd | Professional & scientific | 2007 |
| DMN Software Systems Limited | Information & communication | 1998 |
| DNS Accountants Franchise Limited | Administrative & support | 2014 |
| DNS Accountantss LLP | | 2010 |
| DNS Associates Ltd | Construction | 2009 |
| DNS Consultancy Limited | Information & communication | 2005 |
| DNT Design Services Ltd | Wholesale & retail | 2005 |
| DNV Properties Ltd | Real estate | 2020 |
| Docker Consulting London Limited | Other services | 2024 |
| Dolanside Limited | Construction | 1998 |
| Dolphin Sports Promotions Limited | Construction | 1971 |
| Dolphin World Ltd | Professional & scientific | 2010 |
| Domasist Limited | Real estate | 2000 |
| Dominex Ltd | Construction | 2025 |
| Donald Mcphail Consultancy Ltd | Real estate | 2000 |
| Donnington Limited | Other services | 1996 |
| Dontrix Limited | | 1978 |
| Dosway Limited | Information & communication | 1997 |
| DOT Fintech Limited | Information & communication | 2020 |
| Double Twenty Ltd | Information & communication | 2023 |
| Dovetail Networking Solutions Limited | Information & communication | 2003 |
| Dower Freehold Limited | Households | 2007 |
| Doxford Securities Limited | Real estate | 2007 |
| Dragonfly Pilot Services Limited | Administrative & support | 2026 |
| Drakepine Limited | Wholesale & retail | 1988 |
| Drassington Limited | Extraterritorial | 2003 |
| Dream Homes Limited | Real estate | 2006 |
| Dreamstar Properties Limited | Real estate | 2002 |
| Drepp Tech Limited | Information & communication | 2026 |
| Drillprime Limited | Arts & recreation | 2007 |
| Drumlin Construction Ltd | Construction | 1993 |
| Drumrooske Ltd | Construction | 2008 |
| DSK Trading Limited | Administrative & support | 2006 |
| DSP Publishing Ltd | Information & communication | 2003 |
| Dtdf Consulting Ltd | Administrative & support | 2006 |
| DU Cros Management Limited | Administrative & support | 1983 |
| Duffield & Corden Launderettes Limited | Construction | 1977 |
| Dune Business Solutions Limited | Other services | 1997 |
| Dunmec Engineering Limited | Professional & scientific | 1979 |
| Dunwell Limited | Real estate | 1998 |
| Dunya Properties Ltd | Real estate | 2022 |
| DVS Tax Limited | Professional & scientific | 2004 |
| Dybco Textiles Limited | Wholesale & retail | 1985 |
| Dylan Projects Limited | Information & communication | 2003 |
| Dynamanic Films Limited | Other services | 2018 |
| Dynamix International Limited | Wholesale & retail | 2000 |
| DZ Accounting Ltd | Professional & scientific | 2019 |
| E & V Auto Services Limited | Wholesale & retail | 2003 |
| E - Zone UK Limited | Information & communication | 1999 |
| E H P Associates Limited | Construction | 1996 |
| E J Consultants (London) Limited | Information & communication | 2002 |
| E J Whittington & Co Ltd | Professional & scientific | 2001 |
| E-Med Private Medical Services Ltd | Health & social care | 2002 |
| E-Systems UK Ltd | Information & communication | 2006 |
| E. Spark Limited | Other services | 1999 |
| E.P.S. Property Services Limited | Construction | 2001 |
| E.S.R (Global) Limited | Wholesale & retail | 2011 |
| E13 Investments Limited | Financial services | 2021 |
| EA Langley (Funerals) Limited | Other services | 2000 |
| Eagle Eagle and Jinnah | | 1993 |
| Eagle Nursery Limited | Education | 2008 |
| Eaglestory Limited | | 1986 |
| Earl Consultants Limited | Professional & scientific | 2005 |
| Earthdome Limited | Construction | 1997 |
| East Lane Tyres Limited | Wholesale & retail | 2006 |
| Eastbay Painting & Decorating Limited | Construction | 2007 |
| Eastbury Limited | Real estate | 1992 |
| Eastcrown Limited | Hospitality | 1996 |
| Eastdrive Limited | Information & communication | 2003 |
| Eastern Chinese Herbal Medicine Clinic Limited | Health & social care | 2000 |
| Eastway 258 Limited | Real estate | 2025 |
| Eastway Estates (Borehamwood) Limited | Real estate | 2024 |
| Eastways Travel Service Limited | Administrative & support | 1993 |
| Easy Hoists Limited | Manufacturing | 2004 |
| Easyrush Limited | Administrative & support | 1986 |
| EBF Holdco Ltd | Wholesale & retail | 2025 |
| Ebury Close Management Company Limited | Real estate | 1998 |
| Eckotech Limited | Transport & logistics | 2008 |
| Ecovaulttech PVT Ltd | Information & communication | 2024 |
| Ecrown Limited | Extraterritorial | 2014 |
| Edcon Investments Ltd | Real estate | 2023 |
| Edenbridge Properties LLP | | 2012 |
| Edgware Autos (Hendon) Limited | | 1984 |
| Edgware Cab&Car MOT Limited | Wholesale & retail | 2020 |
| Edgware Hatzola Holdings Ltd | Other services | 2021 |
| Ednox Technologies Limited | Professional & scientific | 2000 |
| EDO Performance Consulting Limited | Other services | 2006 |
| Edward. Dutton | | 1999 |
| Effective Information Systems Limited | Real estate | 1994 |
| Effortless Relocation Limited | Other services | 2008 |
| Efiri Tete Films Limited | | 1988 |
| Ehsas Limited | Construction | 2018 |
| Eico Ltd | Wholesale & retail | 2004 |
| EKO Corporations Limited | Financial services | 2002 |
| El-Awel Engineering Ltd | Construction | 2014 |
| Elan Accountancy Limited | Professional & scientific | 2003 |
| Elastic Triangle Studio Limited | Arts & recreation | 2009 |
| Electra Consulting (UK) Limited | Information & communication | 2005 |