DutchStar,
Are you working for a UK airline? If so after a review of the legislation I believe that you have no legal right to stop anyone photographing you.
An aircraft is a private place upon which entry has been gained in accordance with the conditions of carriage (unless the airline has explicitly banned photography in these conditions of carriage) then the laws of the rest of the UK would be in force, that you can photograph people and places without their consent.
Potentially one could argue that, for example filming the flight deck door entry procedures could be an offence under S58 of Terrorism Act 2000.
The best advice in the UK at least, is to allow people to take photographs as apart from a small handful of locations, it is perfectly legal even if you don't like the fact you are being photographed.