OK, I've just ordered the Abit IP35 Pro XE from Scan, it's a little bit more expensive, but I want a decent motherboard that can cope with what I've got. This seems to be the best board in that range.
Now I just need to get a new PSU. I like the look of the OCZ that Cat linked, but sadly their free delivery is up to 5 days, I don't really wanna wait that long or pay £10 for delivery (although it's still only £69) and the only alternative and decent option I can see with Scan is a 550w Corsair VX. I've heard good things about them, but they are £69 with free del, so which of the two would be better?
OCZ 500W Mod XStream Pro PSU - £59 + £10 del
550w Corsair VX Series PSU - £69 inc del
Probably should've made a new thread about this, but hopefully I'll get some quick(ish) answers.