Day Fever (UK) is a daytime clubbing event that has become a nationwide phenomenon in the UK. It was founded by actress Vicky McClure, her husband Jonny Owen, and Jon McClure, the frontman of Reverend & The Makers. The concept was born in early 2024 as a way to bring people together for a fun, ego-free daytime party experience, allowing participants to relive the magic of late-night clubbing without the late hours.