Sorry, but I can't help you!! Though I am a "shopaholic, fashion-obsessed girl" I don't live in the UK so I'm not familiar with the stores there.
I'm not sure if it ships to the UK, but you can try www.gojane.com. It's got tons of beautiful gowns to choose from at amazing prices. Click on the bar that says "Formals" and check out the selection.
Good luck and Happy Holidays!!
Bookmarks