The British government have released a statement announcing a cabin baggage ban on laptops, tablets and portable DVD players on direct passenger flights to the UK from Turkey, Lebanon, Jordan, Egypt, Tunisia and Saudi Arabia.
The ban applies to any device larger than 16cm long, 9.3cm wide or 1.5cm deep. It includes smart phones, but most fall inside these limits.
The ban is for devices carried in hand luggage, anybody wanting to take these items away with them will be required to stow them in their checked luggage.
You can find out more information about which airlines are affected on the BBC News website.