www.boohoo.com has very different dresses but all very pretty
new look could possibly have some nice things.
top shop is always best for me also i love there summer range
also there is a little shop in Tunbridge Wells called Butterfly (something like that) that has very pretty summer dresses for good prices, I got a lovely purple dress from there! Butterfly is near office in case you didn't know about it.
Hope I helped
sara x