3/4 David Mitchell, Michael Sheen, Jameela Jamil and Sarah Brown compete to be Star Baker.
Mary Nightingale presents an appeal on behalf of Rainbow Trust Children's Charity.
BBC Radio 4
An appeal on behalf of Mencap.
BBC Radio Ulster
Kevin McCloud makes an appeal on behalf of the Stephen Lawrence Charitable Trust.
2/4 Mel Giedroyc welcomes Gok Wan, Jonathan Ross, Abbey Clancy and Zoella to the tent.
Sister Frances Dominica presents an appeal on behalf of React.
1/4 Sue Perkins presents as four iconic figures face Mary and Paul's challenges.
Simon Callow presents an appeal on behalf of Target Tuberculosis.
Julie Walters presents the Radio 4 Appeal for Women's Aid.
Charlotte Hawkins presents an appeal on behalf of Motor Neurone Disease Association.