Robert Webb I think will be the dark horse here. He won the Comic Relief celebrity dance thingy with a routine that was superficially a comedy dance routine but when you looked at it carefully, he has rhythm and clearly can actually dance. Added to that, he is funny and a nice guy. He should do well.
I also really hope Adam Peaty does well, mostly because he seems like a nice, down to earth, likeable, hard working guy, but also because I love it when you get someone whose body is totally wrong for dancing but is unexpectedly brilliant (like Darren Gough, one of my all time favourite Strictly contestants!)