New Met forecast
http:
//www.metoffice.gov.uk/aviation/vaac/data
/VAG_1271591498.png
Looks rather hopeful, per the most recent map/remarks
Assuming that in the very near future, everything above FL200 is "clear" and We on the ground can't "see" anything, it would make it rather difficult for governing bodies to argue the matter.
In logic-land, anyway.