Topman
Very trendy threads, super cheap and no one in the states knows it! A must stop for me every time I visit England, which is a lot b/c my wifes a Brit!
Next
Smart Casual.
River Island
Chain store all over UK. Cheap.
Ted Baker
Awsome store, bits can be found in US department stores.
Saint
Edgy one of kind threads if your ever in Manchester.
Energie
Popular European brand. I've seen a few stores in the US.
Kendals
Manchester department store. All top European designers.
OnMyList
List your pants off!