| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (2) |  | Pirates of the Caribbean: The Curse of the Black Pearl (2003) | £2,037,014 | £4,480,830 | £18,601,540 | -3% | 4 |
| 2 (1) |  | American Pie: The Wedding (2003) | £1,498,122 | £3,411,387 | £12,387,604 | -31% | 3 |
| 3 (new) |  | Jeepers Creepers 2 (2003) | £1,069,346 | £1,069,346 | £1,069,346 | new | 1 |
| 4 (3) |  | Lara Croft: Tomb Raider - The Cradle of Life (2003) | £845,653 | £2,021,814 | £3,546,490 | -45% | 2 |
| 5 (4) |  | Terminator 3: Rise of the Machines (2003) | £526,280 | £1,251,120 | £17,669,984 | -34% | 5 |
| 6 (new) |  | The Lizzie Mcguire Movie (2003) | £498,342 | £498,342 | £498,342 | new | 1 |
| 7 (6) |  | Spy Kids 3D: Game Over (2003) | £390,923 | £994,029 | £5,794,155 | -7% | 5 |
| 8 (new) | | Hollywood Homicide (2003) | £352,445 | £352,445 | £352,445 | new | 1 |
| 9 (8) |  | Rugrats Go Wild (2003) | £237,344 | £601,467 | £2,472,965 | 1% | 4 |
| 10 (5) |  | Freddy Vs. Jason (2003) | £216,596 | £553,364 | £2,241,094 | -51% | 3 |
| 11 (7) |  | Confidence (2003) | £193,977 | £503,986 | £829,671 | -40% | 2 |
| 12 (9) |  | The Man Who Sued God (2003) | £147,934 | £329,413 | £524,831 | -24% | 2 |
| 13 (new) |  | interMission (2003) | £146,220 | £146,220 | £146,220 | new | 1 |
| 14 (11) |  | Piglets Big Movie (2003) | £138,311 | £377,368 | £4,224,912 | -17% | 10 |
| 15 (12) | | Swimming Pool (2003) | £107,615 | £222,904 | £341,996 | -10% | 2 |