HBO confirms first cast members for Harry Potter TV series

Nick Frost, Paapa Essiedu, Janet McTeer and Paul Whitehouse will appear in the forthcoming Harry Potter TV series, US network HBO has confirmed.

Frost has been cast as Hagrid, McTeer will play Minerva McGonagall, and Essiedu will portray Severus Snape. All three were reported to be in talks with the network in recent weeks.

HBO have now formally confirmed their casting, and announced that Whitehouse, well known for the Fast Show and Harry & Paul, will play Argus Filch.

The network also confirmed John Lithgow's announcement in February that he will play Hogwarts headmaster Albus Dumbledore.

The show is due to begin filming this summer, with the first series airing potentially as early as next year.

The actors playing Harry Potter, Ron Weasley and Hermione Granger have not yet been cast.

HBO launched an open casting call for the three lead roles, which reportedly attracted more than 30,000 submissions.

Showrunner Francesca Gardiner and executive producer Mark Mylod said they were "delighted to have such extraordinary talent onboard, and we can't wait to see them bring these beloved characters to new life".

JK Rowling's phenomenally successful series of novels has previously been adapted into a film franchise starring Daniel Radcliffe as Potter.

The TV series, however, will have more breathing space to explore the plot lines from the books without the time constraints of the film.

Rowling will serve as an executive producer on the TV series, which HBO has said will be a "faithful adaptation" of her books.

Further casting announcements are expected to follow soon, with rumours swirling about other actors reportedly in discussions about joining, including Cillian Murphy as a possible Voldermort.