I must have become a little overwhelmed by the sight of LMS Jubilee 5690 at Edge Hill as this one of three rather similar photographs that I took! With each Kodachrome slide costing me a fair few pence, this was a bit of a surprise! After being held for a short while in the yard the train moves away towards the station a short distance to my right under the bridge where the locomotive would be detached ready to run round on the Wavertree triangle.
There is an audio recording of this event on my youtube channel, see..
https://youtu.be/dC3Vdy6E4t8