- Fusion Computer Systems
- 028 77724343 - Tirglasson, Claudy, Londonderry, BT47 4ET
- Cartridge World
- 028 71367999 - 4 Strand Road, Londonderry, County Londonderry, BT48 7AB
- P C Computer Clinic
- 0845 3736600 - 7 Clyde Street, Londonderry, County Londonderry, BT48 7EJ
- 3.P.S Computer Services
- 2 Annadale Lane, Limavady, County Londonderry, BT49 9BX