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Speaking after her win for 'Best Comedy Actress' at the British Comedy Awards for the second year running, Hart said that although there would be a wait for the third series, she was "not thinking about the end".
Hart has repeatedly said in interviews during the last year that she hadn't started writing series three despite the show's success, and her commitment to new BBC One drama Call the Midwife has delayed the series further still.
Miranda's high ratings will see the third series air on BBC One rather than BBC Two.
Hart will star alongside Pam Ferris and Judy Parfitt in Call the Midwife.
