Most cobblers will provide service for shortening belts. The price range depends on the stitching, removal buckle, and rivets. A cobbler can recommend shortening the belt from either the buckle end or the tail end, depending on how it was made.
Price to Shorten Belts
Average Price: £12
Top Price: £14
Shortening a belt often based on how the belt is connected to the buckle, a professional cobbler will normally shorten it without difficulty.