That's quite a tight budget in hifi terms, but nowhere near impossible. If you insist on buying new, I would check out Richer Sounds, they have lots of budget kit in stock and do deal on whole systems.
I have checked their site, if I were you, I would save up £100 more and go for the Marantz and Wharfdale system for £600, saving you £200 if you bought the stuff seperatly. Marantz always do good budget kit and in my opinon, they are a lot better than other budget brands. The wharfdale speakers are well thought of too.
Hope this isnt against the rules, link to the page here:
http://www.richersounds.com/information/hifisystems