Asa Butterfield as Billy Rubin

Gwendoline Christie as Jan Stevens

Ariane Labed as Lamina Propria

Fatma Mohamed as Elle di Elle

Makis Papadimitriou as Stones

Richard Bremmer as Dr. Glock

Leo Bill as Technical Assistant Wim

Harry Alexander as Police Force

Paolo Bafico as Police Force

Pietro Greppi as Police Force

Noko as Sonic Catering Patron

Deborah Griffin as Sonic Catering Patron

Ruth Sampson as Sonic Catering Patron

Justin Turner as Sonic Patron

Ginger Brunton as Fan

Catarina Correia as Fan

Alecsander Javier Nilsson as Fan

Sebastien Kapps as Fan

Rex Latymer as Fan

Courtney Rutherford as Fan

Sara Dee as After Dinner Voice (voice)

Ingrid Evans as After Dinner Voice (voice)

James Hyland as After Dinner Voice (voice)

Britta Gartner as Mistress with Occupied Box

DJ Express as

Neilesh Ambu as Art Gallery Attendee (uncredited)

Parvinder Kaur as Spectator (uncredited)