laptops are now scaned on there own, at the passenger security screening area BA website say ....Can I take electrical items such as an MP3 player, digital/film/video camera, or mobile phone in my hand baggage?
Yes, provided they fit within a bag no bigger than 56cm x 45cm x 25cm (22 x 17.5 x 9.85 inches).
Large electrical equipment such as laptops and hair dryers must be removed from hand baggage and placed in a tray for x-ray screening.
Laptops have to be turn off will on the ground ,take off ,landing and when the seat belt sing is on