My votes go to:

"Vienna" by Ultravox

"Love The Way You Lie" by Rihanna and Eminem which was ironically the best selling song of 2010!!

https://www.youtube.com/watch?v=uelHwf8o7_U

"Crazy For You" by Madonna (runner-up twice!!)

https://www.youtube.com/watch?v=Zn5OJGucveg

A bit early yet but "All I Want For Christmas" by Mariah Carey.

Spice Girls - Stop

I Believe in You, Confide in Me, Love at First Sight, and Better the Devil You Know by Kylie. Before I got into charts I thought they all hit #1 lol so they should have been #1.

Also Ray of Light by Madonna too.

Some good choices here people

Mariah Carey - We Belong Together
Adele - Chasing Pavements

Britney Spears - Piece Of Me

Little Mix DNA (though it was #3)
its the way you make me feel - steps

It has to be Strawberry Fields Forever/ Penny Lane (double A side) by The Beatles. It was a travesty that the greatest single ever released never got to the top spot.

That one brings to mind

Geri Halliwell - Look At Me

I remember she only missed out on the #1 as her record company never distributed two formats for the single only one therefore Boyzone beat her (they had the regular two CD/cassette formats)

If she had had two formats she'd have likely had five consecutive number 1 singles on her own - quite a feat.

Oasis had a few.
Wonderwall
Roll With It
Stand By Me
Stop Crying Your Out
Little by Little
Let There Be Love

Kayleigh, was kept off the top by a charity single.. hate these things

Also I much preferred Vicky Beckhams song to the Sophie Ellis Bexter shitte

Temptation - Heaven 17

What Have I Done To Deserve This? - Pet Shop Boys/Dusty Springfield

Mirror Man...and (Keep Feeling) Fascination - Human League

Annie, I'm Not Your Daddy - Kid Creole & the Coconuts

Sweet Dreams (Are Made Of This) - Eurythmics

Upside Down - Diana Ross

Milkshake - Kelis

Good call from Fanntastik, with Madonna's Ray Of Light.

Stand By Me was released a few weeks after Princess Diana died. It was kept off the top spot by that awful Candle In The Wind re-release!

The most recent one for me would be All Of Me by John Legend, nice to have a piano ballad top the chart instead of the average garbage club track dominating this year

Use somebody - kings of leon
gold - spandau (however you spell it) ballet

Anastacia - Left Outside Alone

Groove Is In The Heart - Deee Lite

Justified & Ancient - KLF/Tammy Wynette

Push It - Salt & Pepa

I'm pretty certain that Brown Sugar by the Stones only got to No.2 in the UK, though it was top of the US chart. That would definitely been a worthy chart-topper.

My picks from 1990 - 1999

1990 : Alannah Myles - Black Velvet
1991 : Seal - Crazy
1992 : Ce Ce Peniston - Finally
1993 : Haddaway - What Is Love ?
1994 : Mariah Carey - All I Want For Christmas Is You
1995 : Pulp - Common People
1996 : Bluetones - Slight Return
1997 : Natalie Imbruglia - Torn
1998 : Steps - One For Sorrow
1999 : Offspring - Why Don't You Get A Job ?

All poptastically, lyrically-blessed songs deprived of a UK #1.

Yup, it was cruelly kept off the UK #1 by ' Dawn - Knock Three Times '.

Moves Like Jagger.
It was stuck at #2 for 7 weeks, behind Example's Stay Awake, Pixie Lott's All About Tonight, , 1D's What makes You Beautiful, Dappy's No Regrets, Sak Noel's Loca People, Rihanna's We Found Love from which the bolded ones are flops in comparison to MLJ

Good call! Moves Like Jagger outsold every one of those songs in the long run though, so I guess Maroon 5 had the last laugh.

Kylie Minogue- On A Night Like This, Love At First Sight
Charlote Church- Crazy Chick
La Roux- In For The Kill
Rihanna- SOS, Unfaithful, Rude Boy
Katy Perry- Teenage Dream

It got outsold by the far superior Start Without You, so not really