Tidmouth Sheds are the main engine sheds on Sodor. In The Railway Series, it is shown as a shed with three or four rails leading in (the illustrations were inconsistent), but in later books it was depicted as a shed enclosing ten berths around a turntable. In the television series, the sheds were replaced by a roundhouse with a turntable at the front.
During the events of Thomas and the Magic Railroad, the left side of the sheds was being repaired for unknown reasons.
Many events have taken place at the Sheds, such as the strike of the big engines and the confrontation between Duck, Diesel, and the big engines.
- Almost every merchandise brand gives Tidmouth Sheds five berths. However, the Tomica and the ERTL Goldrail ones have six.