47488 is captured at Oxford with 1M50 the 0907 Brighton to Manchester Piccadilly. This service had only started running on the 14th of May and was one of a pair of trains between Brighton and Manchester. More details available at www.1S76.com
The normal 7 car formation is already missing a coach.
This is one of two photos of this train on this date that I have.
Photo dated 31/5/79.
Photographer Barrie Watkins.