>This pressure wave was strong enough to knock a certain CFS(H) chap off his feet accompanied by much merriment from his colleagues (except me. I'd lost my bl**dy cap). The wind at the time was calm, so this short term gust was without doubt caused by the aircraft. The surprising thing, apart from the strength of the pressure wave, was the five second gap between the aircraft passing us and the arrival of the wave.<
For this and all the other inputs, many thanks -- fascinating stuff.
Sounds as though Rawnsley & Wright's description was right on the money. If only there was the faintest chance of being able to stand underneath a passing Mosquito to verify it :-(
Thanks again to all for the enlightenment.