WELSH actor and activist Michael Sheen has written off debts totalling £1 million for 900 people in South Wales in an exposé of how the debt industry works.

In a Channel 4 programme broadcast last night, Mr Sheen uses £100,000 to buy approximately 900 personal debts for people living in South Wales.

The actor set up a debt-buying business of his own after working with a former director of a debt collection company.