N-Jacko
As for Ullswater's speed limit, it has been specifically framed so as not to apply to land- and ski-planes.
Are you saying that the 10mph speed limit does not apply to aircraft ? if yes is that for all the lakes in the area i.e. Windermere, Coniston etc were is this stated, when I inquired about landing on a lake I was told no for exactly this reason the speed limit was 10 mph introduced approx. 5 years ago by the nimby's.