The BBC have been accused of using "dirty tricks" to keep 'The Voice' ahead in the ratings.
The star-search show peaked with 11.6 million viewers on Saturday (21.04.12) at 8.25pm, with rival show 'Britain's Got Talent' starting at 8.30pm with 5.7 million, rising to 9.9 million once 'The Voice' ended.
However, the show has been slammed as it overran by three minutes, with insiders suggesting it was done deliberately to prevent viewers from switching over.
ITV's communications manager Mike Large tweeted: "Was The Voice tonight live? Surely that can be the only reason BBC1 overran by 3 minutes... those kind of overruns only normally tend to happen on live shows, don't they?"
An ITV source added: "This is out and out dirty tricks. The BBC always say they are above this kind of thing. Clearly they are not. They are outrageous."
BBC sources claim the overlap was a result of a last-minute re-edit of the show from 100 minutes down to 90 in order to avoid a clash with 'BGT' after ITV moved its time slot back by half an hour to minimise conflict.
A source told the Daily Mirror newspaper: "We didn't want to look as though we were taking their admission of defeat and rubbing their noses in it.
"But the need to lose 10 minutes from each show explains why it overran slightly."