By Max Clarke

Much of UK’s airspace has reopened after air traffic controller, NATS, confirmed that much of the ash cloud had dispersed overnight.

Metrological stations in Germany, however, have detected higher than safe levels of ash which has led to fresh cancellations for flights heading to and from the northern German cities of Hamburg and Frankfurt.

Flights have also been grounded at Cardiff airport, making the Welsh capital the only UK airport facing significant disruption.

The ash thrown up by Icelandic volcano, Grimsvotn, consists of heavier particles which disperse more quickly than the finer ash that grounded 100,000 flights across the continent last year following the Eyjafjallajokull eruption.