A Heathrow spokesperson said:
‘The airfield at Heathrow is fully operational with all runways, taxiways and stands clear.
‘The schedule for today has been reduced by 10% in order to cope with the low visibility conditions expected from 1600 this afternoon. Low visibility means that, for safety reasons, there needs to be a bigger gap between aircraft. Because Heathrow runs at almost 100% capacity there is no slack in the system and flights unfortunately have to be cancelled. Further cancellations are inevitable given the adverse weather conditions at other airports around Europe.
‘We ask that all passengers please check the status of their flight with their airline before they leave for the airport.
‘We have over 200 additional customer services staff at Heathrow today to assist passengers as they come through the airport.’