The Late Debate: Who will replace Boris Johnson and how will the new Met Police boss rebuild trust?

On this month's The Late Debate with Simon Harris, Boris Johnson says goodbye but who should replace him in the race for Number 10? There's a new boss at top of the Met Police too - how will Sir Mark Rowley rebuild trust in the force? And after Sir Mo Farah reveals he was trafficked to Britain as a child what does it say about modern day slavery in London?