London's Blue Badge Tourist Guides often have to take groups to West End theatre shows and, even if they do not do this regularly, it is a good idea to know what is running in Theatreland in order to advise people. With this in mind, I thought it would be fun to see which were the longest running shows on the London stage. I wonder if we are now reaching the stage of the permanent play - as much a part of the London tourist scene as the Changing of the Guard.

London is a "world class" city on many levels, and attracts visitors for a wide variety of reasons, and none more so than for its theatrical reputation, credentials and concentration of West End theatres, known as "Theatreland." Today there are well over sixty theatres both large and small located in a fairly tight geographical area.