Tommy Robinson, whose real name is Stephen Yaxley-Lennon, is a prominent far-right activist in the UK and the former leader of the English Defence League (EDL). He has been frequently in and out of court for a variety of offenses over the last decade. If you’re seeing news that he’s been jailed for 18 months, it could be related to a violation of a court order, contempt of court, or other crime, as he’s been convicted for these types of offenses in the past. As of the time of our conversation, I don’t have real-time news update, hence, I would advise you to verify from a reliable news source for the most recent and accurate information.