No, and what would be the point? It's steeply down hill from the Junction to Pen Mill, so whatever is at the front is mainly there to control the brakes. If the train is to be diesel-hauled from Pen Mill to Weymouth, the simpest procedure would be to detach the steam loco at the Junction. For some reason on this occasion the steam loco is going down to Pen Mill for the ride then back up to the Junction. Anyway the diesel then runs round at Pen Mill.