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.

A Scottish couple down in London for the day, the Chair of Tower Hamlets Labour Party, a Sri Lankan woman attending a course in London, the UNITE officer for Tilbury dock workers and a German speaking Blue Badge trainee – all came along together with many others, including many Blue Badge Tourist Guides, to the tailor-made walking tours commemorating the 125th anniversary of the Dockers’ Strike in 1889.