Even if you've never heard of Chris Aldridge, the chances are you've heard him read news, introduce plays or deliver the Shipping Forecast as senior continuity announcer for Radio 4.

He describes his role and how he generally helps the show to run smoothly. While the show is on air, Ed is responsible for dealing with the callers, assessing them editorially and putting the best ones through to air. Calls come through thick and fast and Ed needs to make quick decisions and manage his time effectively.

Producer Dari Samuels shares his secrets of working with 1Xtra's Twin B and Yasmin Evans. A radio show consists of more than just presenters, and whilst you might not hear producers on air, they’re working hard behind the scenes to develop the format of the show, like 1Xtra Breakfast with Twin B and Yasmin Evans, and to make sure it stays on track.

Making a radio demo can be a daunting prospect. How you put yourself across in that crucial three minutes has the potential to both open and close doors.

From developing your on air radio persona to staying on top of your timings - we discover the top tips for making a demo.

DJ, presenter and voiceover artist Marcus Bronzy gives some realistic advice to prepare presenters trying to get their break, both for TV and radio.

Monki presents her own specialist music show on BBC Radio 1 and 1Xtra but it took confidence, determination plus plenty of experience and a good grasp of the technical side to get there.