GENTLE STRANGER
https://www.facebook.com/loveandunlearn/
MORGAN SIMPSON & MATT KWASNIEWSKI-KELVIN
Aka the drummer and guitarist from black midi. Mega jam time!
ADAM CHRISTENSEN
MERLIN NOVA
https://www.facebook.com/Merlin-Nova-827358980648404/
STUCKY
Plus DJ set from Rosy B (Goat Girl)
Source: Windmill Brixton website