Just popped into Sony Centre Tunbridge Wells to find this absolute beast of a bargain! This is half price from the overblown Sony RRP of £679.99. Other photography stock was 50% off too so some additional decently priced stuff, although it's only a small shop so the range is not great (various compacts, the NEX-3 kits and the A380 with 18-55mm are other items I recall). If you wanted to guess the prices of those take the Sony RRPs and halve them :D
Definately NOT ONLINE, but I have no idea if it's store specific or nationwide. Good luck!
EDIT: INSTORE AT TUNBRIDGE WELLS ONLY