'I've hit rock bottom' - teenager in drug abuse crisis #BBCNolan

You couldn't fail to be touched by those words.... A mother pleading for her son's life. He's now 18 but has been addicted to drugs from the age of 10. And she's watched as he's changed from a bright outgoing Grammar School student with a love for golf into an agitated paranoid teenager living in a squat. Our reporter, Nicola Weir, went to meet David - we've changed his name to protect his identity.