If the British restrictions spread:
One thing I thought of was to buy a disposable camera when you get to where you are going and then put it in checked luggage on the way home. If it breaks well it was disposable in the first place.
With all the cutbacks in services the airlines have made in services, no pillows, food, movies etc. this is going to make flying like riding in a cattle car during World War One. Since you can no longer bring your own food and entertainment.
We will see the return of checked baggage and long waits for it and if they lose it you are really out of luck.
Flash drives loaded with the necessary programs and data and plugged into borrowed or complimentary or rented computers will be more common.