Just to add to the post ... the ten got their act together by the time they got to RAF Benson [Oxford] and they performed a tight flypast of the pad before sttling down with the Merlin's and Puma's on the pan.... [added to soon after by the based police 135]. After lunch they performed an exquisitely timed formation start, stream take-off and yet another tight flypast and disappeared to the West..... .. .The downside of this was that 72 and their Wessex formation was to fly over London but just before they set forth the 'Campaign' [against aircraft - CAA] stopped them and they routed around via Biggin Hill. Many awaiting them on the London bridges were left without their target.. .. .As this flight should have passed over Parliament it can only be presumed that the late decision was not wholly instigated by the CAA. The ten aircraft flight was a massive embarassment to certain persons who work in Whitehall. One more free nail into the security forces in Northern Ireland.