A pedant he say that Oman is A4O, not A40 which all the above seem to be.
As for the aerodrome the Comet prototype is visiting, without doing any research about route proving, I'll guess it's somewhere on the South Africa route - perhaps even Jan Smuts aerodrome at Johannesburg.
ETA I've remembered that it was the second prototype that BOAC used for route proving, not the first so that's 6002
Last edited by Allan Lupton; 9th Nov 2018 at 08:10.