If I'm very honest, you're not going to a PC that'll be that great with that low of a budget. I'd probably look into something a bit more costly. It may also be best to try and get a custom built PC with a decent Nvidia graphics card, and a rather large ram and processor.between £300-600
Entirely up to yourself on budget wise but don't leave yourself short trying to get a top of the range pc.Looking here, I'm definitely going to have to up my budget (lets go up to £1000ish) which is fine, Im working a lot at the moment with the computer in mind, so Ill have to wait a month to get paid again for it. Your help so far guys has been great!!