'Call the Midwife' and 'Death in Paradise' will both be returning for new series after being commissioned for a fourth run by the BBC.
Both hit BBC shows will return for a fourth series, BBC's controller of drama commissioning Ben Stephenson and BBC One controller Charlotte Moore have confirmed.
Period drama 'Call the Midwife', which stars Jessica Raine as midwife Jenny Lee, has been a consistent draw on Sunday nights, with more than eight million viewers tuning in each week.
Meanwhile, 'Death in Paradise' has continued to enjoy strong ratings despite losing lead actor Ben Miller, who has been replaced in the new series by Kris Marshall.
In addition to the renewals, BBC One has commissioned several dramas including a new adaptation of 'Poldark'.
'Being Human' star Aidan Turner has been cast in the lead role of Ross Poldark, who returns to his beloved Cornwall in 1783 after fighting in the American War of Independence, only to discover nothing is the same as he left it.
Aidan said: "I'm very excited to play Ross Poldark for the BBC and it's obviously a huge challenge to honour the extraordinary character Winston Graham created and who Debbie Horsfield has brought new life to."
Meanwhile, BAFTA-winning actress Sheridan Smith will star in one-off cancer drama 'The C Word', which is based on the real-life experiences of Lisa Lynch, who was diagnosed with breast cancer shortly after getting married and turning 28.
The 90-minute drama will begin filming in May.
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