85001 is attached to the stock of the 'Buxton Belle' railtour at Manchester Piccadilly, the train eventually left about an hour late due to Mk1 BCK 21275 having a brake fault and having to be shunted to the front of the formation.
I had a very enjoyable day on this SEG/RCTS railtour.
More details here:-
http://www.sixbellsjunction.co.uk/80s/850608se.htm
Slide dated 8/6/85.
Photographer unknown.