Of course the problem the authorities have now is how to backtrack without losing face when it becomes clear that the air travel situation cannot continue and some degree of normality must be resumed.
I still believe they over reacted, of course we cant fly through volcanic ash, as professional pilots we all know this and dont need it explaining to us.
However whereas the obvious restrictions should be put in place, following this blanket closure of everything how will the governments spin this one??
One watches with interest.
Incidentally I dont know who it was who found dust on their car in London, but I live in Kent and the only dust around here is on my gym kit.