1. St. Martin’s Theatre is a West End theatre located in London, England. It was originally built in 1916 and has a seating capacity of 570. One interesting fact about this theatre is that it has been home to the world’s longest-running play, \"The Mousetrap\" by Agatha Christie, since 1952. The theatre has also hosted other notable productions, including \"The Importance of Being Earnest\" and \"The Vortex.\"

2. The working hours of St. Martin’s Theatre vary depending on the production being shown. It is best to check the theatre’s website or call the box office for more information. The box office phone number is +44 (0)20 7836 1443.

3. Tickets for St. Martin’s Theatre productions can be purchased through the theatre’s website or at the box office. The price of tickets varies depending on the production and seating location. The theatre is located near several public transportation options, including the Leicester Square and Covent Garden tube stations. Bus lines 14, 19, 22B, 38, and 176 also stop near the theatre.