The depot opened in 1999, and houses any of the museum's extensive collections which cannot be displayed at the main museum in Covent Garden, covering 6,000 square metres and 370,000 items. Everything London transport related is here, including posters, signs, models, photographs, engineering drawings and uniforms, as well as rolling stock including buses, trams, trolleybuses, and other vehicles.
And, even better, it's open for guided tours this Friday and Saturday (28th and 29th August). Tours take place at 11.00 and 14.00 and cost £10. Failing that, the next open weekend is on 10th and 11th October.
For more information on this weekend click here, or click here for information about the open day in October.