John Hartson was a premier league superstar, and he got paid a premier league salary. But that didn't stop him spending it all on his gambling problem. Six years clean, with his life and his finances back on an even keel, he's on a mission to raise awareness about the risk that gambling poses to personal finances. He talks to Louise Cooper about what a gambling addiction really costs. Meanwhile the gambling industry continues to grow. Punters lost over £13 billion last year, and an increasing share of that has come from online gambling. Some experts are worried this could spark a rise in problem gambling. Are they right? And are we doing enough to protect a new generation of problem gamblers from emerging? Presenter: Louise Cooper Producer: Matt Bardo Editor: Andy Smith.