I was at Southampton UAS from late 65 until middle 68.
Originally we were based on the same (town) side as the College but, during my time, we moved to the west side of the airfield, alongside the B3397.
There was a hard standing, dedicated hangar and portakabin type offices, for briefing, admin and parachute etc stores (still there, and accessible, when I last visited (2010?)).
The AEF were also based there.
A railway line ran across the airfield and we had to taxy over it to/from dispersal (it may have been disused by then, but I think it took tankers to a refinery).
Town offices were the grand white building at the foot of Bugle st., in Southampton, which overlooks the Royal Pier.
Many a beer was quaffed standing on the balcony.
Sadly, I have no pictures from the time - too poor for a camera as a student!!