Do elaborate……..

In my experience, as long as the aircraft are operated in accordance with the relevant Rules of the Air, there are no requirements likely to be a show stopper for waterborne ops. Even the requirement for licensed water aerodromes was thrown out about 10 years ago….

In England & Wales, as long as you have the water owners permission, fill your boots……(Not literally of course). In a much more liberated Scotland, land anywhere….:D

Ah, the rules seem to have changed then as I seem to recall reading about 15 years back that any area of water intended to be used for seaplanes in England and Wales had to be approved by the CAA but in Scotland the ruling you mention was the case. Aha! Just reread your post and it seems I was getting confused with private and licenced operations. Cheers for clearing that up. I’m pleased they’ve got their act together.