The following classes are known to have worked on the line during this period. The list is not exhaustive, and will be added to as more information becomes available.
Steam
A1, A2, A3, A4
B1
G5
J21, J27, J39, J72
K1
Q6, Q7
Standard 2MT 2-6-0, Standard 4MT 2-6-0, Standard 4MT 4-6-0, Standard 9F 2-10-0
Austerity 2-8-0
Black 5
Ivatt Class 2 2-6-0, Ivatt Class 4 2-6-0
Diesel ('green era')
03, 08, 17, 24, 25, 37, 40, 45, 46, 55, Prototype Deltic, DP2
Additional information much appreciated. Numbers & photographs even more so!