| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (new) |  | The Italian Job (2003) | £2,294,027 | £2,294,027 | £2,294,027 | new | 1 |
| 2 (1) |  | Calendar Girls (2003) | £1,855,986 | £3,802,486 | £5,679,683 | -1% | 2 |
| 3 (new) |  | Underworld (2003) | £1,487,839 | £1,487,839 | £1,487,839 | new | 1 |
| 4 (2) |  | Pirates of the Caribbean: The Curse of the Black Pearl (2003) | £883,751 | £1,363,535 | £24,695,997 | -23% | 7 |
| 5 (3) |  | American Pie: The Wedding (2003) | £403,367 | £701,469 | £16,195,854 | -39% | 6 |
| 6 (5) |  | Jeepers Creepers 2 (2003) | £185,981 | £335,524 | £3,292,610 | -51% | 4 |
| 7 (9) |  | Spy Kids 3D: Game Over (2003) | £175,116 | £191,051 | £6,674,341 | 1% | 8 |
| 8 (7) |  | The Lizzie Mcguire Movie (2003) | £163,735 | £180,739 | £1,471,009 | -15% | 4 |
| 9 (4) |  | Tears of the Sun (2003) | £133,315 | £320,878 | £727,202 | -67% | 2 |
| 10 (13) |  | Spirited Away (2001) | £127,246 | £215,804 | £368,308 | -17% | 2 |
| 11 (12) |  | interMission (2003) | £126,307 | £236,527 | £1,039,601 | -18% | 4 |
| 12 (6) |  | Lara Croft: Tomb Raider - The Cradle of Life (2003) | £122,299 | £209,754 | £5,136,809 | -54% | 5 |
| 13 (new) |  | Le Divorce (2003) | £93,061 | £93,061 | £93,061 | new | 1 |
| 14 (re) |  | Rugrats Go Wild (2003) | £89,964 | £89,964 | £2,960,646 | re | 6 |
| 15 (8) |  | Terminator 3: Rise of the Machines (2003) | £89,651 | £166,357 | £18,789,175 | -50% | 8 |