Blackpool 11 was one of twelve Sun Saloons built in 1939, intended for summer use on the sea front. It had half-glazed windows, opening roof and wooden seats. During World War Two it was used to transport troops for training. During this time, it received fully glazed windows and internal bulkheads. After the war it was rebuilt to the present condition with upholstered seats and fluorescent lighting. In 1952 No.11 was fitted with  Variable Automatic Multinotch Braking Acceleration Control (VAMBAC) equipment and new Maley and Taunton type HS44 tucks incorporating cardan shaft drive and resilient wheels. Withdrawn in 1962 No. 11 went to Hayling island as part of a revival scheme to bring back the railway line. Subsequently this was not successful and No.11 was obtained for the museum and arrived on site in 1969.