With a thousand pounds to spend, it's worth shopping around for recently discontinued models, which can sometimes be had at very good prices.
I picked up a pair of KEF 700 speakers for £1100 , so it's worth searching. KEF speakers would be a good match for your setup, I am more than than happy with mine.
Also consider Monitor Audio and Wharfdale, depending on the kind of sound you like.
Hope this helps.