Keith Allen has been many things. The father of popstar Lily and Game of Thrones actor Alfie Allen, he was also a TV presenter, theatre actor, the man behind two hit football anthems (the Fat Les ditty “Vindaloo” and New Order’s “World in Motion”, both of which he co-wrote) and a handful of small roles in cult movies (Shallow Grave, Trainspotting, 24 Hour Party People). Growing up, he was a troublemaker; he’d spent time in Borstal, was thrown out of drama school, even sent to prison.  Now in his 70s, as he prepares to star in a new musical called Rehab, he looks back on the moments that have made up his rollercoaster life and career with Krishnan Guru-Murthy, on this week’s episode of Ways to Change the World. Produced by Silvia Maresca.