Hi MikeJ,
Didn't mean to suggest you don't support farmers.
Actually meant - by pointing out that one infection many years ago came across the Channel from France in the wind - that any airspace restriction was meaningless in so far as preventing spread of infection.
It might have a use, I thought, in helping show solidarity with our farmers.
And as has been pointed out another good reason was about animal welfare to try and stop the animals being spooked.
Very best wishes,