I'm not just talking about the music, but also them as a whole person. Like what they say in interviews, their personality etc.
For me it's Olly Murs. Has a face like arse and the whole cheeky lad thing grates on me nerves.

Definitely agree with Olly Murs.

One Direction and Bruno Mars too.

One Direction.

One Direction and Olly Murs

One Direction, Olly Murs, Bruno Mars, Jason Derulo. BABYYYY WAT IFFFFFFFFF!!!!!!!!!11111

I think Olly Murs also, I think it's because he forces his 'cheeky chappy' image way to much and to the extreme which comes across cheesy and annoying so i agree with the original poster.

Going back further-Brotherhood of Man were mighty cheesy! "Save All Your Kisses For Me" is vintage cheddar of the highest order.

JLS are quite cheesy sometimes (lyrically too)

Completely agree. Also Connor Maynard and Rizzle Kicks.

Agreed.

Olly Murs, Michael Buble and One Direction for me