Holidaymakers are being evacuated back to the UK from Tunisia on special flights after a gunman killed 38 people at a beach resort.
Travel firms Thomson and First Choice confirmed that “a number of fatalities” and those injured are their customers and said around 2,500 people will be brought back to the UK today.
At least five Britons have been confirmed dead in the attack in Sousse.
Ten Thomson flights are scheduled for today, arriving at Manchester, Gatwick, East Midlands and Doncaster airports this morning.
The holiday operators said all its trips to Tunisia for the next week will be cancelled.
In a statement Thomson said: “We would like to extend our deepest sympathies to the friends and families of those involved in this tragic event.
“We are actively working with the families and friends affected to provide support in resort and a special assistance team is en route to Tunisia to assist our customers.”
The statement added: “The whole of Thomson and First Choice are deeply shocked and truly saddened by the events and we are grateful to our staff on the ground and the emergency services who are working hard in an incredibly challenging environment.”