KEY POINTS:
Amy Winehouse's dad is "apoplectic" over her friendship with Pete Doherty. "I do worry about people like Pete Doherty.
He's a scumbag," said cab driver Mitch Winehouse. "I flipped when I saw him sitting with Amy backstage at her Brixton gig. That night I went crazy.
My wife thought I was going to have a heart attack."
Amy, 24, is said to be close to breaking point over husband Blake Fielder-Civil's incarceration in custody on charges of trying to pervert the course of justice in an assault case.
Admitting to Grazia magazine his daughter is 'not very well' Mitch says there is not much he can do.
"Believe me, my first instinct is to get hold of her, pick her up and take her back to my house and lock her away," he said. "But I've spoken to the finest drug counselors in the world, and they've said that is exactly the wrong thing to do."