Lox Pratt is set to play Draco Malfoy, with Johnny Flynn as Lucius Malfoy. In more family castings, Bel Powley is set as Petunia Dursley and Daniel Rigby as Vernon Dursley. Additionally, Katherine Parkinson will play Molly Weasley.

The cast includes (from left to right in the photo below) Katherine Parkinson as Molly Weasley, Lox Pratt as Draco Malfoy, Johnny Flynn as Lucius Malfoy, Leo Earley as Seamus Finnigan, Alessia Leoni as Parvati Patil, Sienna Moosah as Lavender Brown, Bel Powley as Petunia Dursley, Daniel Rigby as Vernon Dursley and Bertie Carvel as Cornelius Fudge.

The roles of Cornelius Fudge and Hogwarts students Parvati Patil, Seamus Finnigan and Lavender Brown have also been filled for the upcoming HBO series