• Jeremy Corbyn (as key-note speaker)^[4]
• Attila the Stockbroker, poet^[13]
• John McDonnell, Shadow Chancellor^[12]
• David Harvey, Marxist political economist and geography professor^[5]
• Naomi Klein, author, social activist, and filmmaker^[13]
• Ken Loach, director^[12]
• Paul Mason, journalist and activist^[5]
• George Monbiot, Climate activist and journalist^[30]

• Anthony Anaxagorou^[13]
• Boudicca^[13]
• Horse Meat Disco^[13]
• The Native (Jordan Stephens from Rizzle Kicks)^[13]
• Shay D^[13]
• The Soweto Kinch Trio^[13]
• Rum Committee^[13]

In October 2017, Labour MP Clive Lewis was criticised for language used at a fringe event of the conference in which he told the actor Sam Swann to "Get on your knees, bitch!". Swann later described the incident as "jovial".^[32]

• Jean-Luc Mélenchon (as key-note speaker)^[33]
• Jeremy Corbyn^[34]
• Paul Darke, disability activist^[35]
• Katja Kipping, leader of Die Linke^[34]
• Chantal Mouffe, political theorist^[34]
• Ralf Stegner, Social Democratic Party of Germany leader of the opposition in the Schleswig-Holstein region.^[34]
• Zitto Kabwe, leader of Alliance for Change and Transparency^[34]
• Ash Sarkar, journalist and editor of Novara Media^[34]
• Faiza Shaheen, Labour Party prospective candidate for Chingford & Woodford Green and economist^[34]
• Bonnie Castillo, executive director of National Nurses United^[36]

The venue chosen had a capacity for 10,000 attendees.^[2] Momentum had banned journalists from The Sun newspaper from having access to the festival due to its reporting of – and subsequent lack of apology for – the 1989 Hillsborough Disaster.^[1] One of the events hosted by TWT was a "Radical Bus Tour with Dan Carden". Carden, the MP for Liverpool Walton, gave a bus tour covering the key locations of protest, struggle and social progress in Liverpool.^[37]

• Adriana Alvarez, prominent activist in the Fight for $15 movement^[38]
• Diane Abbott^[39]
• Omar Barghouti, co-founder of the BDS movement (via video link)^[40]
• Jeremy Corbyn^[41]
• James Butler, co-founder of Novara Media^[42]
• Ken Loach, director^[39]
• Maya Goodfellow, writer and academic^[39]
• Ash Sarkar, editor and co-founder of Novara Media^[39]
• Hilary Wainwright, editor of Red Pepper^[39]

Over 5,000 people attended the festival which used 10 different venues,^[43] including setting up a hub in the Old Steine Gardens.^[39] Several Labour MPs hosted sessions as part of the "Radical Variety Show": such as Ed Miliband as a gameshow host, John McDonnell spinning a wheel of public ownership and Diane Abbott acting as an agony aunt.^[44]

The festival trialled its own "policy labs" during the festival, leading to the organisation compiling these ideals and publishing a "Manifesto for the Movement".^[45][46][15]

• Diane Abbott, Labour MP and member of the Socialist Campaign Group (SCG)^[6]
• John McDonnell, Labour MP and member of the SCG^[47]
• Ilhan Omar, US Democrat Congresswomen and member of the Congressional Progressive Caucus^[6]
• Ash Sarkar, editor at Novara Media^[47]
• Rashida Tlaib, US Democrat Congresswomen, member of the Progressive Caucus and Democratic Socialists of America^[47]
• Dave Ward, general secretary of the Communication Workers Union^[47]
• Rafeef Ziadah, poet and human rights activist^[47]

Owing to the lockdown, the festival was completely online and took place over a month, during which dozens of events took place.^[7] A revitalised Left Book Club provided a reading group guide during the festival.^[48] Transatlantic strategy for the left was a big topic of conversation,^[49] with one segment including a conversation between Ash Sarkar, Diane Abbott and Ilhan Omar.^[6] There was also sessions that covered issues such as Black Lives Matter to rights of tenants in the private rented sector.^[7]

• Shami Chakrabarti, Labour politician and human rights activist^[50]
• Mark Drakeford, First Minister of Wales^[50]
• Jo Grady, general secretary of the University and College Union^[50]
• Owen Hatherley, author^[50]
• Larissa Kennedy, President of the National Union of Students (NUS)^[50]
• Bernie Sanders, US Senator for Vermont and two time candidate for the Democratic Party's presidential nomination^[51]
• Ash Sarkar, editor at Novara Media^[50]
• Dave Ward, general secretary of the Communications Workers' Union^[50]

Festival organisers stated that over 2,000 people attended the festival and thousands more watched the talks online live.^[24]

With the change in Labour party leadership and its political shift, it was noted by various writers the difference of atmosphere between The World Transformed and Labour Party Conference. The party conference was described by some as fractious and tense; whilst TWT was seen as vibrant and good humoured.^[52][53][54]

Various Labour MPs on the party's left and in the Socialist Campaign Group (SCG) caucus – such as Jeremy Corbyn, John McDonnell, Clive Lewis, Zarah Sultana, Nadia Whittome and Beth Winter –^[55][56][50] took part in different panels such as the Green New Deal discussion.^[57] Sultana hosted a pub quiz during the festival.^[58]

An incident occurred when Corbyn was speaking on a climate change panel and his brother Piers Corbyn, a well known climate change sceptic and COVID-19 vaccine conspiracy theorist, interrupted the panel alongside another anti-vaxx activist to spread conspiracy theories about vaccines and climate change, to which they were dealt with by the panel.^[59][60]