wrote in message
ups.com...

The first train was around 1100-1200 from Rickmansworth, the
second around 1500 from Amersham and the train from Watford to Wembley
was the last one of the day. I was kinda thinking that the same Steam
loco would stick with the same support loco all day??

Unfortunately not. There was usually one loco coaling and/or watering at
Amersham. Normal procedure was that an incoming train at Amersham would drop
off its loco, which would proceed to the up siding for coal or water, the
spare loco at Amersham (from the previous train) would then take out the
next train. In other words, on arrival at Amersham each loco drops back one
train.