A Heathrow spokesman said:
There are some longer queues than normal in the terminals, but we have spoken to border force and they are putting on extra staff.Obviously we want to sort the issue out but not risk the integrity of the border controls.
More top news
City workers facing burn out from high pressure jobs are turning to the world famous Priory rehab clinic in increasing numbers.
Nick Herbert, 45, was so frustrated by his son not answering his phone that he designed an app that torments recipients until they reply.
Charlie Alliston, 20, collided with HR consultant Kim Briggs, 44, at OId Street, central London in February last year.