The UK air traffic control (NATS) have extended the no fly restrictions unitl at least 0100 (local) on Tuesday 20th April.

Conditions around the movement of the layers of the volcanic ash cloud over the UK remain dynamic. NATS is maintaining close dialogue with the Met Office and with the UK's safety regulator, the CAA, in respect of the international civil aviation policy we follow in applying restrictions to use of airspace. We are currently awaiting CAA guidance.

NATS are working closely with Government, airports and airlines, and airframe and aero engine manufacturers to get a better understanding of the effects of the ash cloud and to seek solutions.

More information can be found here