| Date | Artist - Title | Weeks at #1 |
|---|---|---|
2004 Number One Songs | ||
| – | Michael Andrews feat. Gary Jules - Mad World | 3 |
| – | Michelle McManus - All This Time | 3 |
| – | LMC V U2 - Take Me To The Clouds Above | 2 |
| – | Sam and Mark - With A Little Help From My Friends / Measure Of A Man | 1 |
| – | Busted - Who's David | 1 |
| – | Peter Andre - Mysterious Girl | 1 |
| – | Britney Spears - Toxic | 1 |
| – | DJ Casper - Cha Cha Slide | 1 |
| – | Usher - Yeah! | 2 |
| – | McFly - Five Colours In Her Hair | 2 |
| – | Eamon - F**k It (I Don't Want You Back) | 4 |
| – | Frankee - F.U.R.B (F U Right Back) | 3 |
| – | Mario Winans feat. Enya and P.Diddy - I Don't Wanna Know | 2 |
| – | Britney Spears - Everytime | 1 |
| – | McFly - Obviously | 1 |
| – | Usher - Burn | 2 |
| – | Shapeshifters - Lola's Theme | 1 |
| – | The Streets - Dry Your Eyes | 1 |
| – | Busted - Thunderbirds Are Go / 3AM | 2 |
| – | 3 Of A Kind - Babycakes | 1 |
| – | Natasha Bedingfield - These Words | 2 |
| – | Nelly - My Place / Flap Your Wings | 1 |
| – | Brian McFadden - Real To Me | 1 |
| – | Eric Prydz - Call On Me | 5 (3) |
| – | Robbie Williams - Radio | 1 |
| – | Eric Prydz - Call On Me | 5 (2) |
| – | Ja Rule feat. R.Kelly and Ashanti - Wonderful | 1 |
| – | Eminem - Just Lose It | 1 |
| – | U2 - Vertigo | 1 |
| – | Girls Aloud - I'll Stand By You | 2 |
| – | Band Aid 20 - Do They Know It's Christmas? | 4 |
30 different songs hit number one in the UK during 2004.
