| DWCC Ltd | |
| DWH Creative Ltd | |
| DWM Technical Solutions Ltd | Bedfordshire |
| dwx | |
| Dwyer Software | Greater London |
| DX Digital Ltd | |
| Dxcover Ltd | |
| Dyalog Ltd | Hampshire |
| Dynamic Asset Recovery | |
| Dynamic Business Services | West Yorkshire |
| Dynamic Developer | Surrey |
| Dynamic Edge | Aberdeen |
| Dynamic EMS Ltd | Fife |
| Dynamic Imaging Analytics Ltd | |
| Dynamic Networks | West Yorkshire |
| Dynamic Sales Solutions | |
| Dynamic Technologies Europe Ltd | Buckinghamshire |
| Dynamic web sites | Lincolnshire |
| Dynamic Webs | West Sussex |
| DynamicIT Business Services | Cumbria |
| Dynamics Consultants Ltd | Hampshire |
| Dynamon | |
| DynaRisk | |
| Dynasoft Ltd | Channel Islands |
| Dynex Semiconductor Ltd | Lincolnshire |
| Dynnocht Computer Services | North Lanarkshire |
| Dynumo Ventures Ltd | Belfast |
| E File Uk Ltd | Buckinghamshire |
| e intelligence | |
| E&O Laboratories Ltd | |
| E&O Laboratories Ltd | |
| e-availability | Highland |
| e-blueprint Ltd | Merseyside |
| E-business Promotion Ltd | Edinburgh |
| e-Business Systems Ltd | Greater London |
| e-Careers Ltd | Berkshire |
| e-clinic | |
| e-Fox Web Solutions | |
| E-Innovate Ltd | |
| e-Learning Centre | South Yorkshire |
| E-Limelight Ltd | Bristol |
| E-Man | |
| E-Man | |
| e-mango | Dorset |
| E-Max Systems | Glasgow |
| E-Squared Systems Ltd | West Yorkshire |
| e-Stonia | |
| E-Tech Solutions (Lincs) Ltd | Lincolnshire |
| E-telegence | Falkirk |
| e-therapeutics plc | |