The third change in schedules in as many weeks however seemed to benefit both shows, with The Voice hitting a huge series high.
The second run of the BBC One show has increased its ratings every week its been on air and added more than a million viewers on last weekend's show.
An average audience of 7.92 million - up from last week's 6.67 million - tuned in to the fourth round of blind auditions from 8:20PM.
The later start clearly helped the series, which had launched to a rather unimpressive 6.3 million audience last month.
But last night's instalment was well down on last year's equivalent episode, which had over 10 million viewers.
The second episode of Britain’s Got Talent 2013 auditions was also up, attracting a huge audience of 9.66 million viewers between 7PM to 8:30PM.
As judges Simon Cowell, Alesha Dixon, Amanda Holden and David Walliams returned for yet more weird and wacky try outs, ratings rose from last week's 9.35 million.
Including viewers on ITV+1, more than 10.2 million watched BGT last night, with a peak of more than 12 million viewers.
Both The Voice and Britain's Got Talent continue next Saturday night on BBC One and ITV respectively.