Oh I'd heard of them. I've protested with the left in the past who had links to them, the original Antifa were a British group. They just mostly stuck to fighting with actual Nazis and white nationalists previously. But then everyone got redefined as white nationalists, even normie black people.

Edit:https://www.vice.com/en_uk/article/qve8zm/how-british-police-shut-down-the-original-uk-antifa