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First in the UK they banned all guns
Rules on gunbuying in the UK
To buy a shotgun in Britain you need to hold a Shotgun Certificate, and to buy a rifle you need to hold a Fire Arm Certificate. You can ask for forms for these from your local police station.
Ask also to speak to your local police firearms liaison officer, who will tell you what you need to fill those forms out to his or her satisfaction. They may also want to see a 'good reason' for you wanting a gun, such as membership of a clay shooting club or pest control. They usually want to see that you will keep your gun or guns in a secure place, such as a steel gun cabinet bolted to a wall. You have to store ammunition separately.
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Certain types of firearm are hard to obtain in Britain without a stringent Home Office licence. These include automatic weapons and most handguns.