relapsing

Williams had "a really long period of sobriety" before relapsing, Chanel said, but she believes both the stigma around addiction and her brother's successful career, meant they did not seek professional help.

But a Penrhyn House leader said a long-term investment plan was needed to keep people from relapsing.

Chanel says her brother had "a really long period of sobriety" before relapsing, something she says the family only discovered after James's death.

Davie is at the beginning of the process, after relapsing into drug use last year.

The Maudsley Hospital, in South London, has an intensive specialist care programme for its sickest, most regularly relapsing bipolar patients.