This would be my computer of choice!
http://www.voodoopc.com/systems/rage.aspx
Fastest most powerful personal PC on the planet. Plus im sure you can get that 3 screened monitor no problem. Trust me Jabba none come close. This is the Ultimate. Plus when you configure it it automatically tells you how many pounds it will be. So shipping to the Uk will not be a problem.
Althought the Voodoo PC is better, the "l" 3 screened monitors are sooo sweet.