I have a copy of a 1963 Working Timetable for Bristol which gives several trip workings for D63xxs. There's one for a pair which visited Stoke Gifford, Pilning, and Portishead during the day. There were 6 other workings for single locos covering similar locations, as well as Avonmouth, Westbury, and Ashton Meadows. At the time Bath Road had 9 locos allocated, with about 7 diagrammed daily to these trip workings......