66041 brings up the rear of the 3J92 23.17 Toton

to West Hampstead RHTT with 66104 leading. This working is nearing its termination in North London having been in operation throughout the night and having passed this spot, on the three other tracks, three times previously. Taken photographs into the sun is not my chosen practice but it does highlight the high-pressure water being directed on to the rail head. The train is about to pass into the eastern Ampthill tunnel that can be seen in the distance.