Heres a ridiculous fact for you from a pal who is a firearms officer, to own and operate a military tank within the UK with a working weapon (turret mounted cannon) under 75mm in caliber you require:
A standard full UK driving licence (as they are not goods vehicles there is no weight restriction)and a standard shotgun licence.
Your vehicle must also be registered with your local police station.
Seems pretty simple, im off a tank shopping!
