The UK is due to announce a ban on laptops and other electronic devices on certain passenger flights, following a similar move by the US.
It is understood UK restrictions may differ from the US Department of Homeland Security's ban, which affects laptops and tablets.
Flights from 10 airports in eight Muslim majority countries are subject to the US announcement.
US officials said bombs could be hidden in a series of devices.
Under the US move, large electronic devices will only be allowed on board in checked baggage. Phones are exempt from the new rules.
The airlines affected by the US ban are: Royal Jordanian, Egypt Air, Turkish Airlines, Saudi Arabian Airlines, Kuwait Airways, Royal Air Maroc, Qatar Airways, Emirates and Etihad Airways.