Medical cannabis experts, Professor Mike Barnes and campaigner Hannah Deacon sit down with their guests to find out why cannabis matters to them.---In the penultimate episode of the series, Mike turns the microphone on Hannah to hear about her journey to becoming one of the UK's most prominent cannabis campaigners. After never really finding her niche, with short-lived careers in travel and hairdressing, Hannah managed to turn the grief and pain of having a child diagnosed with intractab...