Barebone systems with Intel Dual Core E3200 2.4Ghz, 2 Gb DDR2 Case With 350w PSU - starting at the price £124.99 inc vat. With higher end i7 system all the way up there, I think this is pretty decent deal.
All you need to get is a HDD, monitor and a GPU, but it normally pays of selecting those yourself. While if you are looking for a all-in-one package, this might not be so great; but I always liked the opportunity of getting parts I need, than being given a fixed package.
If your an active forum member over on their forum, the delivery is free; while quidco gives 3% cashback here:http://www.quidco.com/novatech/