Comet have the Lenovo G560 laptop down to £369.99 which seems to be the cheapest price for this specific model anywhere. TCB takes just over an additional £9 off this too!
Although it's not going to be any good for gamers, it's a pretty keenly priced Intel core i3 laptop anyhow (I couldn't find much cheaper for a similar spec).
Specifically - what I think's good about this is the superb keyboard that Lenovo's have and the fact it's got the superior 380 variant of the i3 processor.
For home office use (or for parents in my case) - I think the spec's spot on.