| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (new) |  | I, Robot (2004) | £4,745,541 | £4,745,541 | £4,745,541 | new | 1 |
| 2 (new) |  | 13 Going On 30 (2004) | £1,184,273 | £1,184,273 | £1,184,273 | new | 1 |
| 3 (1) |  | King Arthur (2004) | £778,458 | £2,186,678 | £4,094,762 | -59% | 2 |
| 4 (2) |  | Spider-Man 2 (2004) | £771,415 | £2,236,987 | £23,075,866 | -50% | 4 |
| 5 (3) |  | Garfield (2004) | £741,371 | £2,216,012 | £3,363,449 | -35% | 2 |
| 6 (4) |  | Shrek 2 (2004) | £633,701 | £1,812,645 | £44,089,175 | -36% | 6 |
| 7 (5) |  | The Stepford Wives (2004) | £471,153 | £1,415,124 | £2,361,911 | -50% | 2 |
| 8 (6) |  | Thunderbirds (2004) | £291,044 | £898,297 | £3,765,219 | -46% | 3 |
| 9 (7) |  | Fahrenheit 9/11 (2004) | £220,866 | £566,608 | £5,350,920 | -34% | 5 |
| 10 (new) | | Home On the Range (2004) | £198,226 | £198,226 | £198,226 | new | 1 |
| 11 (8) | | Mujhse Shaadi Karogi (2004) | £103,192 | £231,363 | £414,836 | -44% | 2 |
| 12 (9) |  | Harry Potter and the Prisoner of Azkaban (2004) | £73,615 | £230,292 | £45,447,546 | -44% | 10 |
| 13 (13) | | Before Sunset (2004) | £53,938 | £129,141 | £456,354 | -29% | 3 |
| 14 (11) | | Two Brother's (2004) | £36,048 | £191,362 | £958,161 | -67% | 3 |
| 15 (10) |  | New York Minute (2004) | £35,482 | £167,131 | £276,237 | -67% | 2 |