Non attributable, authorised leaks, Chatham House rules. Briefing the media can be a baffling minefield.

In this episode on golden rules, David Yelland and Simon Lewis look at the art of going on and off the record.

They explain how it's possible to reveal and conceal vital or sensitive information, while protecting yourself and your clients in the process.

Just make sure you've made it very clear what is -and isn't - up for publication.

Producer: Duncan Middleton