The value society places on physical appearance has never quite made sense to blind presenter Lyndall Bywater and yet she's intrigued to discover why it matters so much to those of us in the sighted world. How much of an advantage is it to be beautiful? And what is physical beauty anyway? We've heard about the gender bias, the age bias, and the racial bias but few people talk about the beauty bias and yet it's one of the very first judgements we make when we meet someone. In this programme Lyndall explores this invisible force that controls how we behave - and reveals that when it comes to physical beauty, we all unconsciously discriminate.

Producer: Sarah ShebbeareResearcher: Robbie Wojciechowski