What would happen if Person A got on a flight with a gun in their luggage, providing it was legal?
If Person A lives in a country where it is legal to own a handgun, and got on an international flight to a country where gun ownership wasn’t legal (let’s say a US to UK flight) with a handgun in their luggage, what would happen (assuming they were unaware of gun laws in the UK and had no malicious intentions)?
Let me just say I am not planning on doing this myself, I am purely curious as surely the person could not be committing an offence at the point of departure?
Thanks.

