Gambon told journalists on the Leavesden set of the new film:
"My friends' children come round and see me now, which they never did before, I'm getting letters from all over the world and kids knock on my front door, which is a bit of a nuisance, but you have to keep smiling and be nice. Being Dumbledore is a big responsibility. The work is not arduous."
Since filming began in February - it continues until the end of October - he has had enough time off to make three other films - Being Juilia, Elizabeth Rex and Ladies in Lavendar.