Actor Jason Isaacs told RT at this past weekend's BAFTA awards in London that he was disappointed not to have returned as Lucius Malfoy in Harry Potter and the Half-Blood Prince, the sixth Potter film which is going before cameras now. "It's a source of great embitterment in the Isaacs household," he joked with RT, "but he's in Azkaban so what can you do?"

After attempting to steal a prophesy from Harry at the end of Order of the Phoenix, which arrived in cinemas last year, Lucius is, of course, arrested by the Ministry of Magic and sent to the wizard prison of Azkaban. Those who've read the final book in the series, Harry Potter and the Deathly Hallows will know that Draco Malfoy's villainous father does reappear to make a final stand.

"I hope I'm coming back for seven," Isaacs told us, "Dan's going to Broadway to do his play for a long time, so I don't know when or if I'm going to come back. But I'll be even more bitter if I don't get to return for seven!"

Isaacs also told us how positive the Harry Potter experience was for him and many of the actors involved. "Everybody likes each other and knows each other," he said, "The whole thing goes very easily and there's none of the normal tension you have on films wondering about whether it'll work, because we know it works."

Harry Potter and the Half-Blood Prince hits theatres in November, and we can expect Deathly Hallows to start production early in the New Year.

For more from Isaacs, check out our BAFTA video interviews here.