The Mid Sodor Railway owned at least twenty-six coaches before the railway closed down. Some of these coaches ran on bogies and were used as an express train. According to The Island of Sodor: Its People, History and Railways, no less than eight of the bogie coaches have been rescued and restored at Crovan's Gate. They are now in regular service on the Skarloey Railway. One of which is used as a saloon for V.I.P.'s.
In the television series, these coaches were all sold to the Skarloey Railway following the MSR's closure.
They are probably based on the Ffestiniog and Welsh highland Railway's joint passenger carriages 10, 16 and 23.