Guest host Richard Madeley's joined by Gemma Atkinson, Baroness Warsi and Kevin McCloud, who looks back over 21 years of Grand Designs. Plus: a peek at the new series of Junior Bake Off.

Guest host Helen Skelton's joined by Chris Kamara, Michael Portillo and Luke Kempner, who takes a look at social media workouts. And John Whaite makes a banoffee, pecan and chocolate pie.