(13 Apr 2020, 11:52 am)ifm001 wrote Which would tally with your previous post and pic of 7016 at Stanley in 1987.
So possibly it transferred or was sold to Northern in 1986 ready for deregulation. 
Now I'm wondering just how many vehicles may have been involved. Just this batch or others. 
Also we have the ex Pte batches in 1981 I think it was  of 3524-3533 and 3684-3733.but these were always acknowledged as ex PTE which makes me wonder why 7016-7020 were not classed as ex United.

It appears I was wrong with the date. 
https://youtu.be/dwnBt0__QUY April 87. You can see the shadow of the old west stand in the clip. I thought it had gone by this point, but it clearly didn't. 
Thinking about it, sure it was the sale of Beardsley which funded the Milburn Stand. 

So... The photo of the Gallowgate bus station could have been any point up to Summer 87.