Tom Hardy says he's been a ''bog-standard alcoholic'' his whole life.

The 41-year-old actor - who has previously admitted to being ''out of control'' with drink and drugs before turning his life around - has confessed that his past problems helped him with his latest on-screen role in 'Venom'.

Tom - who went to rehab in 2003 and has now been sober for more than a decade - said: ''I was a bog-standard alcoholic my whole life.''

The British star plays Eddie Brock, a journalist whose body is invaded by an alien, in the new movie.

And he's admitted that in some ways, he can relate to the Jekyll-and-Hyde character.

He told 'Good Morning Britain': ''There were elements of that, like my inside voice.

''I can see the symbolism there, but I know that as a grown-up and as a man I can't go out there and bite people's heads off.''

Tom has emerged as one of Hollywood's best-known stars since overcoming addiction.

And the actor has admitted his career has proven to be his saviour from his past troubles.

Tom - who married his second wife, actress Charlotte Riley, in 2014 - previously explained: ''The only thing that saved me through that dark time was acting. I originally got into it because I wanted to make my father proud of me.

''Because I was an only child, this was very important to me - and there wasn't very much of anything else that I could do.

''But acting was something I could do - and because I found that I was good at it, I wanted to make the effort to invest time and effort into doing it.''