Heathrow was among a number of major airports across Europe hit by delays after a suspected cyber attack that targeted a service provider for check-in and boarding systems.

The "technical issue" affecting Collins Aerospace, which provides check-in and boarding services for various airlines, resulted in 14 flights being cancelled at Brussels Airport on Saturday, and several more being delayed at London Heathrow, Berlin, and Dublin, among others.

'Very clever cyber attack' cancels flights in Europe - latest

Passengers have reported being unable to check in online, instead queuing for hours for staff to deal with them manually at desks and departure gates, only to be told their flights are not taking off.

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