"She who must" bought me John Hutchinson's book for Christmas and the first chapter has a section about the birds' last flight.
One bit is when one the inbound from JFK leaving Ockham contacts Heathrow Director who says "Speedbird 2, only you and I should be on this frequency but I suspect there are many many others .. would you like to say something to them."
When I worked in Teddington for a while she used to make a 180 over my office about 11.00 when Heathrow were on easterlys ... I'll never forget it.