| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (new) |  | District 9 (2009) | £2,288,378 | £2,288,378 | £2,288,378 | new | 1 |
| 2 (1) |  | The Final Destination (2009) | £1,986,515 | £5,091,661 | £8,725,056 | -45% | 2 |
| 3 (new) |  | (500) Days of Summer (2009) | £1,242,631 | £1,242,631 | £1,242,631 | new | 1 |
| 4 (2) |  | Inglourious Basterds (2009) | £764,454 | £1,972,544 | £8,604,715 | -40% | 3 |
| 5 (3) |  | Funny People (2009) | £586,417 | £1,605,234 | £2,606,386 | -41% | 2 |
| 6 (5) |  | Aliens In the Attic (2009) | £498,881 | £1,210,473 | £5,696,881 | -27% | 4 |
| 7 (4) |  | The Time Travelers Wife (2009) | £445,332 | £1,200,060 | £6,829,303 | -35% | 4 |
| 8 (7) |  | G Force (2009) | £349,987 | £955,464 | £12,964,735 | -25% | 6 |
| 9 (6) |  | Harry Potter and the Half Blood Prince (2009) | £326,006 | £849,521 | £50,263,154 | -37% | 8 |
| 10 (10) | | Broken Embraces (2009) | £215,720 | £448,999 | £745,047 | -27% | 2 |
| 11 (8) |  | The Hurt Locker (2008) | £176,710 | £485,882 | £794,769 | -43% | 2 |
| 12 (11) |  | Ice Age: Dawn of the Dinosaurs (2009) | £170,969 | £506,498 | £34,550,832 | -33% | 10 |
| 13 (9) |  | G.I. Joe: The Rise of Cobra (2009) | £154,609 | £448,471 | £6,293,469 | -49% | 5 |
| 14 (12) |  | The Ugly Truth (2009) | £114,170 | £334,052 | £6,321,024 | -55% | 5 |
| 15 (14) |  | The Proposal (2009) | £78,222 | £199,334 | £11,740,551 | -50% | 7 |