Remembering a bit more now. Red 1 was of course the airway which ran between Amsterdam and London; I may be wrong (it was over 35 years ago) but I've a feeling they included a live flight deck view of a flight from Amsterdam to Heathrow in a Trident.
The old radar unit at Heathrow occupied buildings on a site the north side which used to be 'Southern ATCC' and is now a big office building (Compass Centre)
Last edited by chevvron; 25th Nov 2017 at 18:42.