Shortbread recipe on The Great Comic Relief Bake Off 2015 proved a challenge for David Mitchell, Michael Sheen, Radio 1 DJ Jameela Jamil and Sarah Brown

Jo Brand takes the reigns in the bake off tent where four celebrities take on the shortbread recipe challenge in The Great Comic Relief Bake Off.

David Mitchell, Michael Sheen, Radio 1 DJ Jameela Jamil and Sarah Brown are the quartet that must face master baker Paul Hollywood and the queen of cakes Mary Berry, after they attempt to create 24 identical shortbread biscuits in their Signature Challenge.