The 8.30pm-10pm show was seen by 49% of the overall TV audience. BBC One's 8.30pm-10pm offering 'Inspector George Gently' secured 4.6m and a 19.4% share.
ITV1 is expected to dominate this week's primetime viewing with another 'Britain's Got Talent' semi-final scheduled for tonight, the Champions League final tomorrow night and two more BGT semi-finals on Thursday and Friday.
Saturday night's 'Britain's Got Talent' show pulled in 11.3m viewers and a 49.7% share, with BBC One's 'Casualty' its closest rival with a 17.3% share and 4m viewers.