We've still got one more audition show to go but it seems that it's unlikely anyone will be able to overcome the pair's huge fanbases that have amassed over the past month.
Bookmakers put Bars and Melody - who got Simon Cowell's golden buzzer - as the 5/2 favourites to win the £250,000 prize.
And while they're not even confirmed as being in the live semi-finals yet, boy band Collabro are the second tip at odds of 4/1.
Amanda Holden's golden buzzer act Paddy and Nico are at odds of 6/1 while Jack Pack are at 10/1.
The first non singing nor dancing act in the betting is Canadian magician Darcy Oake, who is given a 14/1 shot at winning.
Other strong contenders for a spot on the Royal Variety performace later this year are Bailey McConnell, Light Balance and Eva Iglesias.
However at the other end, outsiders include David Walliams' golden buzzer act Christian Spridon, who is at 200/1 to win despite being just one of four acts in the live shows so far, but it's drag act Tom Pham who's the least likely to win with odds of 250/1.
Who is your BGT favourite this year?
See who makes the live shows this Sunday night on ITV form 7PM.