Kempton Park Pumping station, which houses the world's two largest triple expansion steam pumps, dominates the skyline, as 37203 heads back from Shepperton with the Pathfinder Tours 1Z91 'Buffer Puffer - The Return!' railtour on 20 March 2004. Classmate 37047 can be seen on the rear of the train. After a dull day, the sun finally decided to break through towards the end of the day, allowing this backlit picture, the location of which is only a short distance from the world famous racecourse.