Heathrow is still dealing with the aftermath of yesterday's cyber attack as passengers face a second day of travel hell with flights already delayed and cancelled.

Hackers who targeted Collins Aerospace, a tech firm that provides services for several airlines at multiple airports across the world, caused chaos at the UK's largest airport yesterday, leaving holidaymakers stuck in three-hour check-in queues.

Check-in and boarding systems were crippled, forcing manual processing and causing hundreds of flight delays and cancellations.

Brussels and Berlin airports also experienced delays and disruption on Saturday, with half of all flights being cancelled.

And the chaos is set to spill over into today with Heathrow urging people to check the status of their flight and arrive earlier than usual.