They wanted the freedom to party, the state saw them as the enemy within. The untold story of the free party movement, Caslemorton and the Criminal Justice Act, and how its impact sparked a revolution around the world, from raves and festivals, to politics and protest.

The screening will be followed by a Q&A with director Aaron Trinder hosted by filmmaker Keith Allott.

Free Party: A Folk History is a new, independently made feature documentary following the birth of the free party movement in the late 80s and early 90s and the impact it has had on our present times.

The film follows the inception of the movement, a meeting between ravers and the new age travellers during Thatcher's last days in power, and the explosive years that followed, leading up the infamous Castlemorton free festival in 1992 - the largest ever illegal rave, which provoked the drastic change of the laws of trespass with the notorious introduction of the Criminal Justice Act in 1994.

Image credit: James Parkinson