| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (new) |  | The Final Destination (2009) | £3,633,395 | £3,633,395 | £3,633,395 | new | 1 |
| 2 (1) |  | Inglourious Basterds (2009) | £1,276,012 | £3,035,756 | £6,632,171 | -65% | 2 |
| 3 (new) |  | Funny People (2009) | £1,001,152 | £1,001,152 | £1,001,152 | new | 1 |
| 4 (2) |  | The Time Travelers Wife (2009) | £688,377 | £1,839,958 | £5,629,243 | -25% | 3 |
| 5 (4) |  | Aliens In the Attic (2009) | £679,100 | £1,592,091 | £4,486,408 | 5% | 3 |
| 6 (5) |  | Harry Potter and the Half Blood Prince (2009) | £521,432 | £1,212,778 | £49,413,633 | -13% | 7 |
| 7 (3) |  | G Force (2009) | £468,378 | £1,446,529 | £12,009,271 | -28% | 5 |
| 8 (new) |  | The Hurt Locker (2008) | £308,887 | £308,887 | £308,887 | new | 1 |
| 9 (7) |  | G.I. Joe: The Rise of Cobra (2009) | £305,092 | £794,663 | £5,844,998 | -33% | 4 |
| 10 (new) | | Broken Embraces (2009) | £296,048 | £296,048 | £296,048 | new | 1 |
| 11 (9) |  | Ice Age: Dawn of the Dinosaurs (2009) | £255,556 | £738,616 | £34,044,334 | -24% | 9 |
| 12 (8) |  | The Ugly Truth (2009) | £251,014 | £728,291 | £5,986,972 | -44% | 4 |
| 13 (6) |  | Dance Flick (2009) | £175,922 | £635,250 | £1,098,075 | -62% | 2 |
| 14 (10) |  | The Proposal (2009) | £156,379 | £468,732 | £11,541,217 | -42% | 6 |
| 15 (12) | | Bandslam (2009) | £109,707 | £349,244 | £1,563,803 | -37% | 3 |