I've heard lots of good things about the character and flat response of the Equator speakers, but the D5 only goes down to 53 Hz. Again, you'd probably want a sub and at £401 per pair, it doesn't leave a lot of wiggle room for buying one.
HS8's go down to 34 Hz and fairly flat. Never heard these, but the specs sure look good. Still, £450 per pair at the best prices I can find.
The Eris 4.5 only goes down to 70Hz, but at £280 per pair, you have 120 quid left to find a sub...
Saw the JBL LSR 308s at Bax for £300 for the pair. Down to 37Hz.
Did no one get the monitory joke?