The 38-year-old ITV judge exclusively told Express.co.uk that this year's competition is "anyone's game" as she admitted there are several acts she could see going all the way.
But Alesha has a good feeling about magician Matt Edwards, 34, who made it through to the Britain's Got Talent final after impressing the public in Tuesday night's live semi-final.
"I think Ant and Dec's golden buzzer act is a potential dark horse" Alesha revealed, praising Matt's "old-fashioned" and "family-friendly" entertainment.
Alesha Dixon has revealed who she thinks could be the dark horse to win Britain's Got Talent
Alesha tipped finalist Matt Edwards as a possible winner Amanda Holden vs Alesha Dixon Thu, June 1, 2017
Britain's Got Talent judges Amanda Holden and Alesha Dixon battle it out in the style stakes.
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Amanda Holden and Alesha Dixon wow at the live finals of BGT
"I just can't call it," she admitted. "At this point in the competition now, it's anyone's game."
Matt will go up against eight-year-old magician Issy Simpson when the ITV talent contest draws to a close this weekend, and the pair will also be joined by pianist Tokio Myers, 32, comic Ned Woodman, eight, singer Kyle Tomlinson, 15, mind readers DNA and the two top acts from tonight and tomorrow night's semi-finals.
Alesha also hinted that she believes this could be the first year that a golden buzzer act takes home the prize, as she prepares for her choice, Just Us, to perform in tonight's show.
Alesha also backed her golden buzzer act Just Us
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"I love my golden buzzer act so much, of course I'd love to see them go all the way," she enthused.
The star went on to confess that if she hadn't had pressed her golden buzzer for the dance troupe, she would have for Amanda Holden's golden buzzer, comedian Daliso Chaponda, 37.
"I think he's brilliant, she gushed about the Malawi-born funny man. "Amanda and I both said at the beginning of the series that we would love to see a stand-up comedian do well.
"This may be the first year that a golden buzzer act could win."
Alesha launched the pop-up Powerpuff Girls Emporium today
Alesha said how important it is for girls to have superhero role models
Alesha has recently teamed up with Cartoon Network to help launch their pop-up Powerpuff Girls Emporium in London, celebrating fierce girls everywhere and providing a fun day out for the whole family.
"I believe in everything girl power and the Powerpuff Girls are the original ambassadors of girl power," Alesha said, adding: "I think that they're great role models for young girls.
"We need more female heroes in our lives."
The Powerpuff Girls Emporium is open today until June 3 in Central London and is free to visit.
Britain's Got Talent continues tonight at 7.30pm on ITV.