I got done for a section 5 of the public disorder act...Swearing in the presence of a policeman. Yep, you read that right: not AT the policeman, just in the presence of. How ridiculous. Freedom of speech ay?
Well politics aside, it didn't show up on my Disclosure to gain an airside pass for baggage handling and it didn't affect my visa application for New Zealand so I wouldn't worry about it. The best thing to do is get yourself a disclosure, it's only £20.