| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (new) |  | Collateral (2004) | £2,238,200 | £2,238,200 | £2,238,200 | new | 1 |
| 2 (1) |  | Open Water (2004) | £884,322 | £1,631,947 | £3,602,123 | -55% | 2 |
| 3 (2) |  | The Terminal (2004) | £774,331 | £1,355,019 | £4,697,886 | -30% | 3 |
| 4 (3) |  | Dodgeball: A True Underdog Story (2004) | £770,168 | £1,166,476 | £7,869,395 | -22% | 4 |
| 5 (4) |  | Hellboy (2004) | £345,439 | £591,187 | £2,720,163 | -45% | 3 |
| 6 (5) |  | Anchorman: The Legend of Ron Burgundy (2004) | £331,928 | £620,492 | £1,176,356 | -40% | 2 |
| 7 (6) |  | The Bourne Supremacy (2004) | £275,318 | £499,376 | £11,108,992 | -40% | 6 |
| 8 (7) |  | The Village (2004) | £258,398 | £471,877 | £9,980,280 | -43% | 5 |
| 9 (11) |  | A Cinderella Story (2004) | £207,384 | £239,963 | £3,341,381 | -13% | 5 |
| 10 (14) |  | Garfield (2004) | £191,274 | £207,130 | £8,969,280 | -7% | 8 |
| 11 (10) | | The Motorcycle Diaries (2004) | £176,607 | £343,686 | £1,666,701 | -27% | 4 |
| 12 (9) |  | Super Size Me (2004) | £156,716 | £316,920 | £581,763 | -41% | 2 |
| 13 (new) | | Trauma (2004) | £144,148 | £144,148 | £144,148 | new | 1 |
| 14 (8) | | Wicker Park (2004) | £136,959 | £307,688 | £624,410 | -57% | 2 |
| 15 (12) |  | I, Robot (2004) | £123,676 | £217,880 | £17,790,336 | -48% | 7 |