On TVL (preserved collection) if there are two Class 37 locos multiple working, they will be coupled together at number one end, rather than number two end.
They used to be coupled at the No.2 end but they were changed to couple at the No.1 end when the Class 20 DLC was released because the Class 20 can substitute in for it and they are always coupled nose to nose. It broke some scenarios in the process.
