
The Great Western Railway Air Services commenced operations in April 1933, operating between Birmingham and Plymouth, with Cardiff, Teignmouth and Torquay en-route. The service consisted of one aircraft, a three-engined Westland Wessex, owned by Imperial Airways, and painted in brown and cream, the traditional colour for GWR passenger carrying vehicles, such as the railway carriages, streamlined diesel railcars, and motor busses.

Timetable dated May 22 1933, from the collections of Björn Larsson http://www.timetableimages.com/ttimages/gwr.htm