I got my wedding dress from Exclusive Bridalwear in Tyseley, Birmingham. They sell one off designer sample dresses, all arranged in size order, in their showroom. They even had a voucher on their websirte for an additional 10% off. My dress which would normally retail for over £1,000 was only £315! The only thing to be aware of is that they only have the dresses that you see, they cannot order a dress in a different colour or size, although they can do alterations to the dress for you.
Their address is: 22A James Road, Tyseley, Birmingham, B11 2BA.
Their telephone number is: 0121-708 2343
Their website address is: www.exclusivebridal-tyseley.co.uk.
I also believe that certain branches of Oxfam now having wedding dress departments. Department stores such as M.& S., B.H.S. & Debenhams all sell a limited range of wedding dresses at good prices or you could try e-bay or the classified sections of local newpapers.
Good luck! Hilary.