<Tr> <Th> Website </Th> <Td> thegreatbritishbakeoff.co.uk </Td> </Tr> <Dl> <Dd> Star Baker </Dd> </Dl> <Table> <Tr> <Th> Episode No . </Th> <Th> Signature Challenge </Th> <Th> Technical Challenge </Th> <Th> Showstopper Challenge </Th> <Th> Contestants </Th> <Th> Airdate </Th> <Th> Viewers (millions) </Th> </Tr> <Tr> <Td> </Td> <Td> Shortbread </Td> <Td> Custard Slices </Td> <Td> Portrait Cake </Td> <Td> Jo Brand </Td> <Td> 21 January 2013 (2013 - 01 - 21) </Td> <Td> 4.17 </Td> </Tr> <Tr> <Td> Stephen K. Amos </Td> </Tr> <Tr> <Td> Lorna Watson </Td> </Tr> <Tr> <Td> Ingrid Oliver </Td> </Tr> <Tr> <Td> </Td> <Td> Iced Biscuits </Td> <Td> Bakewell Tart </Td> <Td> Gateaux </Td> <Td> Warwick Davis </Td> <Td> 22 January 2013 (2013 - 01 - 22) </Td> <Td> 4.44 </Td> </Tr> <Tr> <Td> Duncan Bannatyne </Td> </Tr> <Tr> <Td> Simon Reeve </Td> </Tr> <Tr> <Td> Andy Akinwolere </Td> </Tr> <Tr> <Td> </Td> <Td> Scones </Td> <Td> Chocolate Eclairs </Td> <Td> Novelty Cake </Td> <Td> Ellie Simmonds </Td> <Td> 23 January 2013 (2013 - 01 - 23) </Td> <Td> 4.34 </Td> </Tr> <Tr> <Td> Kirsty Wark </Td> </Tr> <Tr> <Td> Julia Bradbury </Td> </Tr> <Tr> <Td> Bob Mortimer </Td> </Tr> <Tr> <Td> </Td> <Td> Chocolate Biscuits </Td> <Td> Lemon Meringue Pie </Td> <Td> Comic Relief Birthday Cake </Td> <Td> Claudia Winkleman </Td> <Td> 24 January 2013 (2013 - 01 - 24) </Td> <Td> 4.39 </Td> </Tr> <Tr> <Td> Ed Byrne </Td> </Tr> <Tr> <Td> Martha Kearney </Td> </Tr> <Tr> <Td> Helen Glover </Td> </Tr> </Table> <Tr> <Th> Episode No . </Th> <Th> Signature Challenge </Th> <Th> Technical Challenge </Th> <Th> Showstopper Challenge </Th> <Th> Contestants </Th> <Th> Airdate </Th> <Th> Viewers (millions) </Th> </Tr>

When is the great british bake off recorded