Well I know what I was after:

Size 13, Black, Leather Soled, Lace up Shoes (for Rapper)

hmmmm... Have just spent most of the day wondering around all the shoe shops in Croydon looking for a pair - needles and haystacks!

Did manage to find a pair of 12s my feet would squeeze into in the end so all is now sorted, except I wasn't planning to spend £50!