 The series premiered on 25 June 2015, on BBC First in Australia and BBC UKTV in New Zealand.The drama series premiered on 5 March 2015 and gained 3.4 million viewers, giving BBC2 a rare ratings victory over both BBC1 and ITV.It was BBC2’s second biggest new drama launch for several years, behind "Wolf Hall", which began in January with an overnight audience of 3.9 million.