There's nothing stopping you walking into my garden and eating the food on the BBQ is there. No garden police.
But obviously my guests would yell "what's this arsehole doing?" "fuck of out of here!" and if you didn't go we'd remove you and call the police.
BUT and this is something for you to think about. Decent people just obey the law in the first place.
For anyone with an ongoing and general problem with obeying the law we provide small apartments with bars on the windows.