In reply to h.cook2000:
I would not recommend decathalon, go to a shop that has experienced staff, ideally one with a climbing wall so you can actually test them out. Somewhere like the foundry climbing wall in Sheffield is ideal as it has a large range and experienced staff who will offer sound advice, and you can even test the shoes out before you commit to the purchase!
I often see people in the shop there buying their second pair after going somewhere like decathalon and getting sold some overly tight, technical shoe that they just don't enjoy climbing in.