Harry Potter star Daniel Radcliffe warns celebrities who use social media 'cannot expect privacy'

Celebrities who use social media to tell fans what they are doing "moment to moment" can not expect to have a private life, according to Harry Potter star Daniel Radcliffe.

The 24-year-old actor said he stayed off sites like Twitter and Facebook in an attempt to keep a low profile.

But Radcliffe, whose new show A Young Doctor's Notebook starts on Sky Arts tonight, admitted he had resented the attention he got as the young star of the Harry Potter films.

He said: "When I was 18 or 19 there was definitely a level of frustration around...I did have to think where I went more than a lot of my friends and you do get a little frustrated around that age, but ultimately it's childish, petulant - oh I want that too.

"People always say to me, 'Do you feel like you missed out on a childhood? Do you feel like you had your childhood taken away?' And I'm like: 'No, what a ridiculous, like, kids who are abused have their childhoods taken away from them.'"

Radcliffe, whose wealth has been estimated at around £50 million, said "the only time" he spends a lot of money is in bookshops where he can buy as many as 20 books in one go.