What does it take to hold a room? The world of stand-up comedy is still dominated by male comedians, but as writer-turned-comic Viv Groskop tells Mary Portas, it's all about finding your voice.

Also on the programme, we peak behind the scenes of The Work Like A Woman book tour and Mary reveals the many names she's been called in the workplace.

Thanks to the sponsors of this episode, Natwest. Find out more about how they're rethinking business here.