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Professor Greg White joins Sara in the studio as part of a very special day of programming for Radio 2’s Comic Relief efforts.

For over 24 hours, Claudia Winkleman and her ‘Strictly Come Dancing’ co-host Tess Daly will be trying to practice what they preach and ‘Keep Dancing’ here at Radio 2 in ‘The Longest Ever Danceathon For Comic Relief’!

The Danceathon will see Claudia and Tess floss, dab and salsa to the beat night and day within your favourite Radio 2 programmes, where they’ll also be joined by a host of celebrity friends helping them to stay motivated and never skip a beat.

As well as listening live, you’ll also be able to see every one of Claudia and Tess’ dance steps via the red button and the Â鶹¹ÙÍøÊ×Ò³Èë¿Ú iPlayer, and it’s all in support of this year’s Red Nose Day, which is on Friday 15th March.