<Tr> <Td_colspan="2"> Production website </Td> </Tr> <P> Last Tango in Halifax is a British drama series on BBC One . First broadcast on 20 November 2012, twenty episodes have aired . Screenwriter, Sally Wainwright, loosely adapted the story of her mother's second marriage . Starring Derek Jacobi and Anne Reid as Alan and Celia, former childhood sweethearts, who are now in their seventies . Reunited via Facebook, they meet, fall in love, and plan to marry . Reid and Jacobi enjoyed having the chance to play out a love story between older people . Sarah Lancashire and Nicola Walker star as Caroline, Celia's daughter, and Gillian, Alan's daughter, respectively . Other characters are played by Nina Sosanya, Tony Gardner, Ronni Ancona, Dean Andrews, Sacha Dhawan and Josh Bolt . </P> <P> The first series of Last Tango In Halifax aired between 20 November and 19 December 2012 . It was the UK's highest rated new mid-week television drama of 2012 and was re-commissioned for a second series . The second series aired from 19 November 2013 to 24 December 2013 . The series was re-commissioned for a third series on 24 December 2013, ahead of the final episode of the second series . The third series aired from 28 December 2014 to 1 February 2015 . Following the end of the final episode of series three, the BBC announced that a fourth series had been commissioned . Series 4 was broadcast on 19 and 20 December 2016 . </P> <Table> <Tr> <Th_colspan="2"> Series </Th> <Th> Episodes </Th> <Th_colspan="2"> Originally aired </Th> <Th> Ave . UK viewers (millions) </Th> </Tr> <Tr> <Th> First aired </Th> <Th> Last aired </Th> </Tr> <Tr> <Td> </Td> <Td> </Td> <Td> 6 </Td> <Td> 20 November 2012 </Td> <Td> 19 December 2012 </Td> <Td> 7.32 </Td> </Tr> <Tr> <Td> </Td> <Td> </Td> <Td> 6 </Td> <Td> 19 November 2013 </Td> <Td> 24 December 2013 </Td> <Td> 7.10 </Td> </Tr> <Tr> <Td> </Td> <Td> </Td> <Td> 6 </Td> <Td> 28 December 2014 </Td> <Td> 1 February 2015 </Td> <Td> 7.79 </Td> </Tr> <Tr> <Td> </Td> <Td> </Td> <Td> </Td> <Td> 19 December 2016 </Td> <Td> 20 December 2016 </Td> <Td> 7.26 </Td> </Tr> </Table>

Is there a season 4 last tango in halifax