Most West End shows in London are approximately two to two-and-a-half hours in length, including a 15 or 20 minute internal.But shows do vary in length, with some shorter shows running for one to one-and-a-half hours without an interval, and some longer shows running for up to three hours in length, usually with one interval. See our guide to West End shows and running times to find out how long your show will run for on the night.