| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (new) |  | Brüno (2009) | £5,000,229 | £5,000,229 | £5,000,229 | new | 1 |
| 2 (1) |  | Ice Age: Dawn of the Dinosaurs (2009) | £4,750,720 | £7,781,647 | £15,421,531 | -38% | 2 |
| 3 (2) |  | Transformers: Revenge of the Fallen (2009) | £1,449,282 | £2,611,944 | £23,580,163 | -49% | 4 |
| 4 (4) |  | The Hangover (2009) | £1,228,918 | £2,510,356 | £16,493,961 | -19% | 5 |
| 5 (3) |  | Public Enemies (2009) | £1,048,359 | £2,381,276 | £4,609,567 | -53% | 2 |
| 6 (5) |  | My Sisters Keeper (2009) | £675,948 | £1,566,385 | £4,075,837 | -11% | 3 |
| 7 (6) |  | Year One (2009) | £242,950 | £626,621 | £2,637,356 | -50% | 3 |
| 8 (8) |  | Night At the Museum 2 (2009) | £106,420 | £193,402 | £19,475,421 | -29% | 8 |
| 9 (7) | | Kambakkht Ishq (2009) | £104,849 | £251,761 | £551,294 | -65% | 2 |
| 10 (new) | | Short Kut: The Con Is On (2009) | £80,488 | £80,488 | £80,488 | new | 1 |
| 11 (9) |  | Terminator Salvation (2009) | £68,544 | £187,890 | £14,114,589 | -54% | 6 |
| 12 (new) |  | The Private Lives of Pippa Lee (2009) | £44,511 | £44,511 | £44,511 | new | 1 |
| 13 (new) |  | Fired Up! (2009) | £30,691 | £30,691 | £30,691 | new | 1 |
| 14 (12) |  | Angels and Demons (2009) | £28,365 | £83,614 | £18,509,160 | -46% | 9 |
| 15 (15) |  | Looking For Eric (2009) | £26,950 | £64,087 | £1,183,470 | -14% | 5 |