The age old "should we decriminalise cannibis?" conversation has reared it's head again, this time with the London Mayor Sadiq Khan backing the calls to decriminalise for possession of small amounts.

How are drug laws in the UK damaging police relations with ethnic communities? What would decriminalisation it mean for stop and search? And, with so many countries around the world having already legalised cannibis, how will it change things here in the UK? Former head of Counter Terrorism for the UK, Neil Basu, joins us in the studio.

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