Peak tanker fleet...?
In the mid 80s I thought there were about...
2 Sqns Victors
6? Vulcans converted as a stop gap measure?
6? C-130Ks
??? Tristars
Not sure if the Tristars were doing tanking them, but they were certainly in RAF service.
So maybe the AAR fleet peaked in the mid 80s....?
I'm sure someone with more knowledge can expand on that...