New rules to allow planes to temporarily fly in high ash density zones

As a result,there are no predicted restrictions on UK airspace in the immediate future, says NATS.

The Civil Aviation Authority is to announce on Tuesday that planes will be able to fly in a zone with higher ash densities for a limited amount of time.

The new zone will be called the "Limited Time Zone" and it is situated between the No Fly Zone (NFZ), referring to the areas of greatest ash density, and the red Enhanced Procedures Zone (EPZ), that is areas of low density, which were introduced during the six-day crisis last month, explains the National Air Transport Service.

According to the same source, as a result of the introduction of the new zone, there are no predicted restrictions on UK airspace in the immediate future.