A brand new documentary called ‘Bare Knuckle Fight Club’ explores the underground world of the UK’s most brutal bare knuckle scene.

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Aired on Channel 4 last night, the footage took viewers behind the scenes of infamous bare knuckle promoter Shaun Smith’s quest to make the sport legal.

The show featured a shit load of blood, sweat and some seriously savage knockouts. Here’s a little taster:

Brutal. That’s a good bit of watching for those of you who are ditching the clubs to stay in tonight. You can watch the full documentary on 4oD now.

For photos that show the brutal and illegal world of bare knuckle boxing, click HERE.