Daniel Radcliffe is "nervous" about filming his final 'Harry Potter' scenes. The actor - who plays the boy wizard in the movie franchise of J.K. Rowling's hit children's books - admits he would rather be replaced by an older star for the ending of 'Harry Potter and the Deathly Hallows' if anti-aging technology made him look "stupid".

Speaking about the ending of the movie, which takes place 20 years after the main action, he said: "I am nervous about that because if it's good I'll be really, really pleased; if it's not good and that's what people are left with, that would be awful.

If it's a choice between having me, Rupert Grint and Emma Watson looking a bit stupid and it being slightly comical or having other actors play us, I would go for other actors every time. So, we'll see." Because the final book in the series was so long, moviemakers decided to split it into two parts and producer David Heyman admitted it was difficult to decide where to make the divide.

He told Empire: "We've played around with a couple of places and ultimately settled on a place that we think is very exciting, and I think quite bold, in that it's not necessarily where one might expect. You want to give a sense of completion, on one hand, but a sense that there's another piece, more to come. We tried one and then Steve Kloves, the screenwriter, came up with the idea to try it another way and when we tried that, it felt just right."