Was going to keep out of this 'cos of the "I remember when factor" but could not resist in the end. The apron north of 28R (shows my age) was used in the early 60's as the cargo area and the Pan Am 707 that Airsmiles referred to would have been the Clipper 160/161 that came in early morning and left for EDDF. There would also have been it's TWA 707 equivalent, other users would have been an Aer Fungus Viscount freighter, the beloved Air France Breguet 761/763 Deux Ponts and maybe a Lufthansa Connie.
With the cargo area being North side freighters would always want to use 28R for landing, difficult with a night restriction on 28R landings, I was once promised by an Aer Lingus that he would be "quite as a mouse if he could use 28R", gave him an approach on 28L and he switched runways at about ˝ mile. The Breguet used to come inbound through Biggin early morning at min stack always winging in a thick French for descent as he appeared to have a problem losing height (to say nothing of the mobile traffic block it made outbound as it staggered towards Seaford!!) I remember JK winding him around the sky trying to get his height off to be greeted by a heavy French accent, "Londrés what you tink I am, a fighteeer"
05 approaches were normally a radar circuit with the aircraft required to call finals crossing the river, could be a bit of a sweat if you had one that was a bit tardy rolling on the 10's. 33L and 15R approaches were also flown as radar approaches with corresponding 28 or 10 departures.
Hope that helps.