More and more men are taking part in secret fight clubs in the UK - but why? In the last year, there were on average more than three fights every week. They are racking up millions of views on social media, but operate outside the licensing of boxing authorities and under the radar of the police. #UntoldC4 for @channel4. Available now on Channel 4 Streaming and on the Channel 4 Documentaries YouTube Channel’ in your caption. #UntoldC4 #fightclub #kingofthering #kingofthestreet #boxing #ring