Think about your listener and aim to keep them interested by varying your voice, avoiding rambling or speaking in a monotone. Speak a little more loudly and slowly to emphasise a point or draw ...

Gareth Malone: 'Cause very often they will just speak on a monotone and those sort of ... Gareth Malone: Once you're using your voice, making sounds like ooh and aah and aw, you know imaging ...