Guardsman, Yorkshireman and Prizeman in May 1965, during a WSS Tyneside branch visit to Hull docks. Unfortunately I did not record the precise location - help George!

With those trees behind, could be the north side of Railway Dock.
YORKSHIREMAN maybe laid up as she went for scrapping in August 1965.
PRIZEMAN was converted to diesel that year so may have been up there during or after that change from steam.
GUARDSMAN was to last until Nov 1967

Just checked my diary, I was there on 11 May 65 and recorded first sightings of YORKSHIREMAN, AIRMAN, PRIZEMAN, NORMAN, HANDYMAN and TOLLMAN on that day. While I did not record locations I am sure some of these were in a small batch of Uniteds laid up in Railway Dock.

Thanks George.