| Label: | EMI 7243 8 79994 2 6 |
| Genre: | Pop |
| Style: | Vocal, Ballad |
| Format: | CD (Single) |
| 1 | What If (Full Version) | 4:06 |
| 2 | What If (Film Version) | 1:47 |
| Label: | Liberty EMI Records UK CDKATE 001 |
| Genre: | Pop, Stage & Screen |
| Style: | Theme, Ballad, Vocal |
| Format: | CD (Maxi-Single , Enhanced) |
| 1 | What If Kate Winslet » Engineer: Chris Laws, Matt Howe » Engineer [Assistant]: Daniel Pursey » Producer: Steve Mac » Written-By: Steve Mac, Wayne Hector | 4:06 |
| 2 | The Covertry Carol Tiffin Choir, The » Arranged By: Philip Pope » Chorus Master: Simon Toyne » Engineer: Adam Brown » Producer: Philip Pope » Written-By: Pageant Of The Shearmen And Taylors | 4:26 |
| 3 | What If (Film Version) Kate Winslet » Engineer: Chris Laws, Matt Howe » Engineer [Assistant]: Daniel Pursey » Producer: Steve Mac » Written-By: Steve Mac, Wayne Hector | 1:49 |
| Video | What If (Enhanced Video) Kate Winslet |
| Label: | Liberty EMI Records UK kate 001 |
| Genre: | Pop |
| Style: | Ballad, Vocal |
| Format: | CD (Single , Promo) |
| 1 | What If |
| Label: | EMI 7243 8 79994 2 8 |
| Genre: | Pop |
| Style: | Ballad, Vocal |
| Format: | CD (Single) |
| 1 | What If (Full Version) | 4:06 |
| 2 | What If (Film Version) | 1:47 |
| Label: | EMI 7243 5 53761 2 1 |
| Genre: | Pop |
| Style: | Vocal, Ballad |
| Format: | CD (Single , Mini) |
| 1 | What If | 4:05 |
| 2 | What If (Film Version) | 1:48 |
| Label: | Liberty EMI Records UK TCKATE 001 |
| Genre: | Pop, Stage & Screen |
| Style: | Theme, Ballad, Vocal |
| Format: | Cassette (Single) |
| A1 | What If Kate Winslet | 4:06 |
| A2 | The Covertry Carol Tiffin Choir, The | 4:26 |
| A3 | What If (Film Version) Kate Winslet | 1:49 |
| B1 | What If Kate Winslet | 4:06 |
| B2 | The Coventry Carol Tiffin Choir, The | 4:26 |
| B3 | What If (Film Version) Kate Winslet | 1:49 |