In the UK, you can: - Make a citizen’s arrest (Police and Criminal Evidence Act, 1984, s24A) - Bring a private prosecution (Prosecution of Offences Act 1985, s6(1)) - Use reasonable force to defend yourself or property (Common Law + Criminal Law Act 1967, s3). All legal.(Peter McCormack 🏴‍☠️🇬🇧🇮🇪)