Britain says ash will not lead to airspace shutdown

“There won’t be any shutdowns,” Transport Secretary Philip Hammond told BBC radio. “We’ve moved on to a different way of working, we won’t be closing airspace.”
Last year, an ash plume from another Icelandic volcano caused six days of disruption, leading to 100,000 flights being canceled, stranding 10 million passengers and costing the industry an estimated $1.7 billion in lost revenue.
Some services have already been canceled to and from Scotland and northern England but Hammond said they did not expect widespread disruption on the same scale as last year. 
“Even though there will be ash present over last parts of the UK for parts of this week that will not stop flying activity.”