James McAvoy thinks he has a ''wonky face''.

The 'Welcome to the Punch' actor doesn't believe he is conventionally good looking and would never describe himself as a heartthrob.

He said: ''I certainly don't feel like a heartthrob. I don't walk around going, 'Thank God I'm hot.' For every one person who thinks I am alright looking, you know there are 20 more saying, 'Why him? He's f***ing weird looking. He's got a wonky face! He's so pasty!''

The 33-year-old actor - who has son Brendan, two, with wife Anne-Marie Duff - gets really nervous and paranoid when it comes to filming sex scenes.

He added to Britain's Marie Claire magazine: ''I mean, sex is a nightmare in real life until you meet the person you click with. When you're pretending multiply that anxiety by a thousand.

''You wake up in the morning and you're like, 'Oh no, I've got a spot on my bum,' or you're in the middle of a scene and you're like, 'Oh no, is my breath weird?' or, 'Oh, no. She's nice but does she think I'm trying to cop a feel? But I'm really not, I'm just trying to do my job.''