[Shaun]

Eamon - **** It (I Don't Want You Back) / The Frankee reply. (100% the worst moment in music history when both these songs went to #1.)
Ed Sheeran - Galway Girl (hard to pinpoint one bad Ed Sheeran one but I think this is the absolute worst of the "made up stories about meeting some one-night-stand in the pub but in a dead classy and #relatable way innit" bollocks he puts out)
Passenger - Let Her Go (soporific)
Black Eyed Peas - The Time (Dirty Bit) (HORRIFIC. Going from the good hits of The E.N.D. to this was just unnecessary, and the beginning of a long and dark will.i.am.terrible. journey in the UK)
JLS - The Club is Alive (I am so glad they inevitably fizzled out because they only had two good songs and neither of them could make up for this atrocity)
Jason Derulo/Nicki Minaj/Ty Dolla $ign - Swalla (just...gross.)
Rihanna - Unfaithful (I am partial to quite a lot of Rihanna but I think this is the song where the vocal just does something HORRIBLE to me the most, so nasal and whiny and nasty A close 2nd in that title would be Sam Smith's "Money on my Mind")
Michael Buble - It's a Beautiful Day (again, hard to narrow down my Bublehate to one song but I think this is the most schmalzy and saccharine and nauseating)
Piero Umiliani - Mah Nà Mah Nà (aka that Muppets song, aka that song that advertised biscuits for BN. yeah, that annoying song.)
Tom Lehrer - The Elements (nothing like my other offerings here but there is absolutely no song in the world that has me wishing for it to end IMMEDIATELY more than this bloody periodic table song)

10 that spring to mind in terms of having nothing redeeming about them