On summer Saturdays, the line continued to carry a very heavy traffic of long-distance trains, from northern towns to Bournemouth and back. The traditional nature of the operation of the route was reflected in the fact that most of the originating towns were on the former Midland Railway system, almost as if the railway grouping of 1923 had never taken place. These trains brought unusual traffic combinations to the route, and the home locomotive fleet was augmented by strangers such as LMS Jubilee Class 4-6-0s from the north, though these did not work over the S&D proper, and West Country Pacifics from the south. For the summer seasons of 1960, 1961 and 1962 a small number of BR Standard Class 9F 2-10-0s, which were designed as heavy freight locomotives, were transferred to Bath locomotive depot, in an attempt to reduce the preponderance of double-heading required on the majority of trains between Bath and Evercreech Junction on account of the steep gradients encountered on either side of Masbury summit. For the same reason, during the summer months the native S&D class 7F 2-8-0s were also pressed into service to assist, or to handle lighter trains on their own.
