Wedding dresses in the uk?

I am getting married in barbados in april and want a good dress, but nothing too fancy or long as it will be on the beach. i would like to avoid going to bridal shops if i can help it and am thinking about buying from a high street shop such as monsoon, debenhams, m&s etc. can somebody help with any other shops in the uk that may sell good bridal type dresses? i dont want to buy off the internet as i want to be able to go and try on without paying the extoritionate price that some wedding dresses in bridal shops cost. i am looking at spending no more than £200, would preferably like white (as it shows up on the photos for a beach wedding better) and am thinking of maybe a shorter or at least not right down to the floor length (as it will drag in the sand). any help would be appreciated.sorry jonny i cant access any of the links you gave.
Answer
Believe it or not, bhs have a nice bridal section, and its getting bigger, they have some beautiful dressesnot sure if they have a web site that you could check out before you went but most people are never far away from onelol googled bhswho knew there was a british horse society lolanywayhere you gohttp://www.bhs.co.uk/mall/departmentpage.cfm/bhsstore/91824/1/1