Eve Hewson as Flora

Orén Kinlan as Max

Joseph Gordon-Levitt as Jeff

Jack Reynor as Ian

Marcella Plunkett as Kathy

Paul Reid as Kev

Don Wycherley as Guard

Amy Huberman as Aishling

Callan Cummins as Teenager in Music Shop

Sophie Vavasseur as Juanita

Margarita Murphy as Lawyer

Alex Deegan as Samantha

Harvey Hutchinson as Keith

Melissa Morefield as Ukulele Girl

Keith McErlean as Barry

Stephen Ryan as Cyclist

Ali Fox as Neighbour 1

Ruairí Heading as Neighbour 2

Ellie O'Halloran as Shop Assistant

Dylan Kelly as Brian

Ailbhe Cowley as Young Woman (Defendant in Court)

Marcus Lamb as George Rooney

Aislín McGuckin as Judge McGovern

Jessica Freed as Registrar

Colman Hayes as Guard in Court

Stephen Jones as Therapist

Aaron Delaney as Compound Kid 1

Jedidjah Rondala as Compound Kid 2

Kelly Thornton as Heart

Joni Mitchell as Self (archive footage) (uncredited)

Katy Perry as Self (archive footage) (uncredited)

Lionel Richie as Self (archive footage) (uncredited)

Luke Bryan as Self (archive footage) (uncredited)