gorgeous long-haired blonde lady purposefully striding out to the aircraft
That would have been Gay Absalom.
She followed a family trend in joining her father (Roland?) in flying helicopters and passed her PPL in 1966. It was not long before she progressed to a CPL in a period when females and helicopters were not an accepted combination in the commercial world. She was 23 when she enrolled at the Oxford Air Training School at Kidlington and got her commercial licence.
Bristows turned her down and, although he was not a party to the original decision, Alan Bristow himself rejected her subsequent appeal. She then got a job with Air Gregory. I remember seeing her at Battersea many times during the early/mid 70's - wonder what became of her?