have the law on (someone)(redirected from have the law on them)
have the law on (someone)
To inform the police of someone's activities. Primarily heard in UK. I'll have the law on you if I catch you on my property again!
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
have the ˈlaw on somebody(British English, informal) (often used as a threat) report somebody to the police: If you have just one more noisy party, I’ll have the law on you.
Farlex Partner Idioms Dictionary © Farlex 2017