Rupert Grint
Self - 'Ron Weasley'

Emma Watson
Self - 'Hermione Granger'

Daniel Radcliffe
Self - 'Harry Potter'

James Phelps
Self - 'Fred Weasley'

Oliver Phelps
Self - 'George Weasley'

Robbie Coltrane
Self - 'Rubeus Hagrid'

Matthew Lewis
Self - 'Neville Longbottom'

Alfred Enoch
Self - 'Dean Thomas'

Alan Rickman
Self - 'Professor Severus Snape'

Tom Felton
Self - 'Draco Malfoy'

Richard Harris
Self - 'Professor Albus Dumbledore' (archive footage)

Warwick Davis
Self - 'Goblin Bank Teller' and 'Professor Filius Flitwick'

Harry Melling
Self - 'Dudley Dursley'

Fiona Shaw
Self - 'Petunia Dursley'

Richard Griffiths
Self - 'Vernon Dursley'

Maggie Smith
Self - 'Professor Minerva McGonagall'

Ian Hart
Self - 'Professor Quirrell'

John Hurt
Self - 'Mr. Garrick Ollivander'

Ralph Fiennes
Self - 'Lord Voldemort'

Emma Thompson
Self - 'Professor Trelawney'