Elvis Presley's re-released song One Night was revealed as Britain's 1000th No 1 single on Sunday.
It comes nearly 53 years after Al Martino's Here In My Heart became the first single to top the charts in November 1952 holding the top spot for nine weeks.
Over the decades, Britain's hit parade has seen a rapid change in musical tastes ranging from fifties rock and roll to 21st Century reality TV stars.
However, with the fall of single sales and downloads becoming steadily more popular, the future of the singles chart is difficult to predict.
What is your favourite No 1 single? What is the worst No 1 ever?
This debate is now closed. Read a selection of your comments below.
The following comments reflect the balance of views received so far:
Best Number One - Bucks Fizz: My Camera Never Lies. It's a perfect pop song, still sounds terrific today 20 years on!
Iron Maiden's Bring Your Daughter to the Slaughter. Metal was at a low point in the 90's so to get to number one is something in itself. But an even better achievement when the media didn't play it.
The best? Impossible to choose, but would have to be from before the eighties. After that singles sales were sliding rapidly and didn't really represent what people were listening to.
Any one of the Jam's No 1 hits, especially A Town Called Malice. What will anyone have to say about the likes of 'Busted' in 20 years time?
Paul Cook, London, UK
Hmmm, really hard choice but in the end it has to be 'You Really |Got Me' by the Kinks in 1964. Check out the cover version by Van Halen as well - only song I've ever heard where the cover is as good as the original! Worst - where can I start?!
Frankie, Coventry, UK
I would have to say my favourite Number One of all time is Everybody Wants To Rule The World by Tears for Fears. It was also a great video.
Gary R. Knowlton, Pittsburgh, PA, USA
The very best No 1 ever? "I Feel Love" by Donna Summer, without a doubt. A groundbreaking track when it was released back in 1977 and still stands up well today. The worst? Anything by the Spice Girls, I guess.
Nse Ette, Lagos, Nigeria
Got to be Specials Ghost Town. It summed up the nation at the time.
Kenny, West Mids
The best no.1 single of all time is Billie Jean by the legend Michael Jackson
Jade, Middlesbrough, England
Best: Iron Maiden's Bring Your Daughter to the Slaughter. For a band who got very little airplay in the 80s and 90s - and if I'm not mistaken, banned by the Beeb - this was one heck of an achievement. Worst: Anything that Simon Cowell has a hand in.
Glenn J, UK
Best would have to be Every Breath you Take by the Police. There are too many awful records to mention, but the Cheeky Girls would be down there somewhere in bad music land.
Surely the best number one ever, is In The Year 2525, by Zagar and Evans. The worst number one, Wannabe by Spice Girls, hard to believe that it came out in the same year as Firestarter by the Prodigy.
Tony Evans, Southport
There is three songs that should be name joint all time number 1's they are Robbie Williams - Angels, Aerosmith - Don't Want To Miss A Thing and Queen's - Bohemian Rhapsody
Carl, Mansfield Nottinghamshire
Best: Careless Whisper by George Michael. Worst: 99 Red Balloons - Yuk
Lorraine Clay, Spiez, Switzerland
The best UK number one single of all time in my opinion is 'Hey Jude'. The best single not to make it is 'Wonderwall'. The worst single to be number one is undoubtedly 'Wandring Star' by Lee Marvin.
David Rainford, Manchester, United Kingdom
I used to avidly listen to the charts when I was a kid during the 80s. It was always a big event when something went straight in at Number 1. Not so much these days! My favourite has to be "Going Underground" by The Jam!
The best,' Town called Malice' by the incomparable Jam. The worst 'There's no one quite like grandma' by St Winifred's school choir ( although there are a lot of contenders for the worst!)
Mark Gillespie, Northwood, Middlesex
Bohemian Rhapsody was pretty terrible, but not the worst. There has been plenty of even more terrible number 1s. The only really great no.1 I can think of is "Ghost Town" by The Specials.
Best for me would be any Cliff Richard but if I had to choose then 'Millennium Prayer'. Worst? Any of that over rated Beatles or Elvis rubbish.
Russell Gregory, Halesowen, West Midlands
Simple. Steve Harley and Cockney Rebel. "Make me smile" (Come up and see me) a classic that I still play.. The worst...I'll go with most and say Bryan Adams, with "that" song... I went away to Kenya for three months, it was number 1 when I left, and it was still number 1 when I came back...I begged to be let back on the plane..
Gavin Clarke, Portsmouth, England
Good Vibrations by the Beach Boys is the best, closely followed by Procul Harum's A Whiter Shade of Pale. The worst? Save Your Love by Renee and Renato. Ugh!
Tim, Kent, UK
My favourite would have to be the often forgotten Number One - Free by Deniece Williams - a fine gem.
Tom Hourigan, Warwick, UK
I sincerely pity people without the capacity to appreciate any No. 1's since 1980. How tragically narrow must their appreciation for music be. As for me, impossible to choose a best one but the worst has to be Teletubbies!
Alun, Bristol, UK
Tainted Love by Soft Cell was my favourite. Remember the shock of seeing Marc Almond on TOTP? Jaws dropped and Dads across the nation declaring it "Rubbish" amongst less kind comments! Interesting that 25 years later Marc is still performing great songs.
Andrew, Edinburgh, Scotland
My favourite no 1 single of all time has to be the original Band Aid's "Do They Know It's Christmas?"
Andrew Gollins, Hoylake, England
The best (that never was): God Save The Queen by The Sex Pistols, and the worst would be I Don't Want To Talk About It by Rod Stewart, which was Number One in the week that The Pistols sold more copies (Silver Jubilee week - go figure!).
Jason, Nottingham, England
The best is either Under Pressure or Heroes - both by the Master, David Bowie. The worst? I can't begin to count them all.
Best - "Two Tribes" by Frankie Goes To Hollywood. Worst - anything by Elvis Presley.
Goody Two Shoes by Adam Ant. An absolute belter! Utterly underrated.
Paul, Chipping Sodbury, UK
My favourite No 1 is
Whiter Shade of Pale
by Procol Harum. I think the worst was Rolf Harris Two Little Boys!!
Cilla Millner, Longfield, Kent, UK
Sadly the best songs don't always reach number one, but if I have to choose I would go for Whitney Houston's "I Will Always Love You".
Gordon, Southampton, UK
"Another day" by Paul McCartney in the early innocent 70's, and the worst would be the one about pushing pineapple and shaking the tree.....
99 Red Balloons in 84, best number one, ever!
The best: anything by U2. The worst: anything by the Spice Girls.
My favourite number 1, would be the one the establishment pretended was only number 2; God Save The Queen - The Sex Pistols. Worst number 1 must surely be Shaddap Your Face - Joe Dolce.
Adam, Ryde, UK
Are friends Electric? by Gary Numan
It's very fitting that it will be Elvis. He's dominated most of the charts because he's the world's best entertainer. No-one will ever compare to him - that's why nearly 28 years after his death, his re-releases are doing better than the rubbish that people are churning out today. Long live The King!
Lucie Carroll, Dublin (but originally Leeds)
The first record I ever bought was Elvis's Jailhouse Rock. It remains my favourite record to this day and - what a young trendy I am - it's still No 1, 47 years later!
Richard Ede, Horsham, England
Whiter Shade of Pale is favourite, reminds of the summer of 67 and the innovative music around at that time. My choice for worst is Congratulations (Cliff Richard) horrible and tacky!
Andrew O'Donnell, Epsom
Crazy little thing called love, Queen.
Best: Relax - Frankie Goes To Hollywood, especially since it was banned from certain media establishments. Worst: Mr Blobby. Dreadful record and was championed by certain media establishments.
Gerald Davies, Cardiff
All Right Now by Free was the best No. 1 from summer of 1970. The worst - choose from Ernie, Grandad, No One Quite Like Grandma┐ yuk!
Stephen Passman, Brierley Hill, England
The best would be Je t'aime (Jane Birkin) and the worst will be anything by Busted.
Muthana Amir, Leicester, UK
A one hit wonder It's Almost Tomorrow by the Dream Weavers. No. 1 in March 1956 for two weeks. The reason, it was the first pop record my parents bought with their new record player, and so brings back memories of the best days of childhood. The songs not bad either.
Barry P, Havant, England
My favourite No.1 was Your Woman by British Asian artist White Town.
Matt Fedak, Sheffield, England
The record charts became meaningless when the vinyl 45 was replaced by the CD. I think that was the biggest con by the record producers ever. At least with vinyl you got what you paid for, but with the one size fits all CD, there is so much wasted space that it's almost criminal for what they charge. Oh yes, my favourite single has to be Queen's Bohemian Rhapsody, the video was ground breaking, it invented the music video that so many groups seem to need today. It seems if you dance right it doesn't matter how bad the song is.
Dave, Ramsgate, England
Lots of favourites but if I had to choose it has to be M People's Search for the Hero. The worst is no problem - anything by Cilla Black!
Tim McMahon, Pennar, Wales
Best for sheer unadulterated joy and originality She Loves You by the Beatles. Worst are most number ones since 1980, especially the new romantic drivel.
The best number one ever is Bohemian Rhapsody by Queen naturally. The worst? Perhaps the people who actually put the Mr Blobby and the pop idols of this world at the top in the first place.
Gary Clark, Washington, Tyne & Wear
Best? The spunky Relax by Frankie. Worst? Don't You Want Me by the bloke with the silly haircut and those two ugly tarts.
80s Dave, UK
The best has to be anything by Queen - truly legends. The worst - probably anything in the last ten years.
Richard, Lancashire, UK
Well my favourite would be either be the Kinks - Sunny Afternoon or The Beatles -Yellow Submarine/Eleanor Rigdby and the worst is anything by Elvis.
Mark Stanley, Aylesbury, Bucks, UK
A favourite number one single of mine is School's Out by Alice Cooper. I left school in nineteen-eighty and even now on hearing that song I recall the defiance and hope for the future from the prospective of a total school-hater. Another favourite is Wanderin' Star by Lee Marvin. Oh, the thrill of just being able to, when you've had enough of a place, open the door, and move on! And never have to return! Disability again prevents me from being an actual wanderer, but in my soul I am.
My worst number one? Anything by a manufactured, substance-less ice cream group usually droning some bland rendition of a track from the seventies or eighties, shot to number one on the back of promoters that are forcing our young to pick rather than think for themselves due to enforced, mostly imaginary, peer pressure. All the best!
Sarah, Manchester, England
Favourite has to be Anarchy In The UK by the Sex Pistols. Notable for being kept at the top spot by the powers that be during Silver Jubilee week.
Mark Gillespie, Weymouth, UK
It's not unusual. Jones the voice.
Yes - the best is The House of the Rising Sun by the Animals. A real classic. But so many 60s and early 70s number ones were quality with a capital Q.
Chris, Surrey, UK
The best number one is always a personal choice for people, for me it's Get it on by T-rex, put simply it changed my life, it made me see what a powerful thing music can be, I forgot about football in a month and went to see the big acts of the time, Bowie, Zeppelin, and many more, the worse number one, for me was Grandad by Clive Dunn, I still shiver when I think of it.
From 1,000 number ones it's hard for me to pick a favourite although Wuthering Heights by Kate Bush is probably the one for me, or Dancing Queen by Abba. As for the worst, I think it's a bit unfair to say anything by Busted. Can't say I am a huge Busted fan, but compared to the hideous Jive Bunny, they are Lennon and McCartney!
Carol, Edinburgh, UK
It's Now Or Never is my favourite Elvis No. 1 song, and the best song I have ever heard from any artist world wide.
Baidar Bakht Haroon, Rawalpindi, Pakistan
My favourite No. 1 single has to be Lionel Richie's song Hello. A lovely song and a fantastic singer to go with it.
Sharon, Bristol, UK
I vividly remember Doop by Doop in 1994. It shamelessly took the mickey out of itself but even Doop was a much better song than most of what I've heard in the past three or four years. I challenge anyone to suggest a worse Number 1 than Mr Blobby.
Alex, Aylesbury, UK
Hit Me With Your Rhythm Stick by Ian Dury and the Blockheads.
Tony, Cambridge UK
The best No 1 has to be Another Brick In The Wall by Pink Floyd. The worst is anything by Busted, Mcfly or Britney Spears.
Christian, Lancs, UK
The worst Number One single is all of the ones since about 1980, and most of the 70s. Nowadays, most bands could get themselves to number one just by getting a few of their mates to buy their record. What's it take, about 27 records? Best ever, probably Bohemian Rhapsody - that or Shaddup Your Face by Joe Dolce. I dunno, it's a close one all right.
Andy G, Northants, UK
Too many great ones to pick a favourite. The worst has to be Paul McCartney's Frog Chorus. What was he thinking?
B. Anna, NYC, USA
The worst No1 has to be Bryan Adams - Everything I Do. The best surely must be Queen with Bohemian Rhapsody!
Nick Clarkson, Manchester
I've never taken any notice of the single charts. I'm 55 now, and for as long as I can remember the charts have been the play thing of record company executives. The influential and quality music has been in the album charts, if recorded at all.
Bob Harvey, Lincs, UK
"Apache" by The Shadows. It started the whole rock group thing off in the UK in 1960.
L. S. Davis, Toronto
'House of the Rising Sun' by the Animals. Superb piece of work. Followed by 'For your Love' by the Yardbirds (got to 3 but was well worth a number 1 position).
Fave No 1 is Pink Floyd - Another Brick in the Wall.... Worst No 1, well there are far too many to mention!
Helen, Torbay, Devon
My favourite No 1 single has got to be "Young Love" by Tab Hunter. When was that? 1956? 1957? A long, long time ago, back in my teens, when I was courting my first wife.
Graham Rodhouse, Helmond, The Netherlands
I hate the way the chart works now. It is all influenced by the record companies and has devalued getting to number 1. The best is Bohemian Rhapsody but the list is endless for the worst. Where do I start? Busted, Westlife, Geri Halliwell.....
There needs to be a list of all of them somewhere - Every Breath You Take by Police, although my favourite Elvis song is Devil In Disguise which was also top in 1963.
Ken, London, UK
Surely the biggest travesty in the history of the charts was Joe Dolce's "Shaddap Your Face" keeping Ultravox's "Vienna" from the No 1 spot!
Paul Woolley, UK
The best is Queen and David Bowie - Under Pressure. The worst is anything by Busted.