Labour sells its vaping crackdown - but is it too late?

The government's pointed to vapes as a key weapon in the war against cigarettes. 

In the rush to reach its smokefree targets, however, there are fears the horse has bolted - with children exposed to a whole new addiction. 

In this week's Focus on Politics, Political Reporter Giles Dexter explores the conflicting priorities that meant Labour's vaping regulations may have come too late.