Lord Adonis stated on 'The world at One' today that there had been an over reaction to the Ash event by the authorities concerned.
Fancy that.
I'm no expert, but it seems me that only an idiot would knowingly fly into the plume found above a volcano.
However, low levels (too low to see at all from air or ground) must have been encountered countless times over the years with no one any the wiser, and no problems reported, given that there are plenty active volcanoes all over the world.
Given that any problems to be caused by ash from Iceland are plainly going to be tiny compared to flying in the plume, why not simply fly on and see if any problems occur- likely none will.
I guess we are now in that situation.
Definately, as many on here have said and now had confirmed by the gummint no less, a gross over reaction.