The third audition episodes of both shows saw The Voice UK overtake its ITV1 rival, with 9.5 million viewers to BGT's 9.4 million, although BGT was slightly ahead with +1 viewers included.
Non the less, Simon conceded on Twitter: "A slightly irritated congrats to Danny and the BBC"
And referring to last night's Britain's Got Talent act [tag]Ashleigh and Pudsey[/tag], he added "But you didn't have a dancing dog!"
A spokesperson for the Beeb responded: "Very gentlemanly tweet from @SimonCowell."
Both shows continue this Saturday night on BBC One and ITV1.