Slam Dunk Festival returns to Leeds, England on May 23-24, 2026, delivering two days of punk, rock, metal, alternative, and post hardcore music. The festival features headliners Knocked Loose and Good Charlotte, alongside notable acts including Sublime and Taking Back Sunday. With 49 artists performing across the weekend, the lineup showcases talent from the United Kingdom, United States, Canada, and Australia. This standalone festival offers punk and rock fans a comprehensive celebration of alternative music genres in one of England's premier music cities.