Hair and style

Richard Hammond plays God for laughs, Downton gets down and dirty – and Gareth fills the nation's heart with song (again) Richard Hammond Builds a Planet (BBC1) | iPlayer Downton Abbey (ITV) | ITVPlayer The Choir: Sing While You Work (BBC2) | iPlayer Autism: Challenging Behaviour (BBC4) | iPlayer You wouldn't mind having Richard Hammond round to change a flat tyre, but how much does he know ...