And they're from Tesco!
eSys Intel Celeron PC Base Unit (£139.93)
eSys AMD 3600 PC Base Unit (189.93)
So, they're not the best systems out there and for some reason they're running 6.06, but they'll probably do just fine for surfing the net and writing documents, which is probably what someone buying a computer at this price would want to do (especially someone who'd buy a computer from Tesco).
Whether this is a good or bad thing remains to be seen (Pro: This is a step towards the mainstream for Linux/Ubuntu, Con: These could be terrible computers, which would reflect badly on Ubuntu). Either way, that's a hell of a lot of clubcard points! :D
The next step is to get Dell to release Ubuntu PCs over here. Hopefully they'll do so by the time it becomes time for me to replace my current laptop... (or at least get myself a desktop to go with it)