Heathrow Airport has apologised after several flights were cancelled due to ‘technical issues’.
The west London airport confirmed extra staff had been put on to help with directing people to their gates after it experienced problems with electronic boards.
In a tweet, Heathrow Airport said: ‘We are experiencing technical issues at the airport which we are working hard to resolve.
‘To help direct customers to their gates, we have deployed additional Heathrow colleagues across our terminals.
‘We apologise for the disruption and will continue to provide regular updates.’
British Airways cancelled at least twenty flights, with Emirates Airlines and other carriers also experiencing delays, Mail Online reported.
The situation at Heathrow Airport was described on Twitter by one passenger as ‘utter chaos’.
Jenny Nielsen tweeted pictures of whiteboards displaying handwritten flight numbers and destinations.
She added: ‘Computer systems down at Heathrow.
‘No electronic tickets allowed, delays & no flight information on screens… Oh Blighty.’
British Airways told a customer on Twitter: ‘We’re aware Heathrow Airport is currently experiencing a technical issue that is impacting some of their IT systems across the airport, affecting a number of airlines.
‘We are working with them to resolve the issue as a priority and apologise for the delay to our customers.’
The situation was made worse by previous cancellations caused by Storm Dennis.