How about this as an answer
"I am the commander of this flight and responsible for what is loaded fuel, food, passengers cargo etc, so take them off me, place in the cargo, then as commander of the aircraft I will authorise its transfer to the flight deck when airside or do it myself"
BTW (Commander) as non UK citizen I am not aware of the laws of your country, I have bought them in good faith.
The UK law states "or intended by the person having it with him for such use by him or by some other person"
I await the CPS decision as to whether a charge is suitable in the public interest.
