It's taking place on September 20 at London's O2 Shepherd's Bush Empire
He described the arrest of Mo Chara as “a single instance of transgressive speech taken out of context and put before a jury to secure a conviction”
Over 100 leading artists have signed the letter, which is titled, "We stand for freedom of expression"
Others confirmed for the stage include Antony Szmierek, Reverend And The Makers, Grandson and more
“We love you. You exist. You always have”
The former Labour politician is remembered as a "radical national treasure"
The festival has also announced its "electrifying" Theatre & Performance bill
Including songs by Vampire Weekend and Tom Petty
"The unlicensed use of creative works for training generative AI is a major, unjust threat to the livelihoods of the people behind those works"
Thousands have gathered in UK cities to show their support for refugees and immigrants, following xenophobic riots breaking out across the country