The police can ask for the full name, address and age (and proof) of anyone who has, or recently had, a firearm, and can demand to see a firearm licence immediately or within 48 hours at a police station [Firearms Act 1977 s 31]. The police can stop, detain and search any person or vehicle if they reasonably suspect that a firearms offence is being committed or in other certain circumstances [Firearms Act 1977 s 32].