Thanks for that Samuel. Pity I didnt know earlier but thats the way it goes.
I'm not at all sure it was a Tristar, I only saw a very large engine with lots of blokes in front saluting, and as some of them were RAF...I assumed it was a Tristar. It could have been an RNZAF 757, but as the party in question had flown in from Australia I presume it was on their own aircraft...unless the UK Government had asked us very nicely. They'll be taking boatloads of wine back with them I suppose, Ian Botham took a container full last time he was here!