| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (1) |  | Harry Potter and the Half Blood Prince (2009) | £2,917,786 | £7,467,397 | £40,537,578 | -44% | 3 |
| 2 (new) |  | G Force (2009) | £2,478,524 | £2,478,524 | £2,478,524 | new | 1 |
| 3 (new) |  | The Taking of Pelham 123 (2009) | £1,784,719 | £1,784,719 | £1,784,719 | new | 1 |
| 4 (2) |  | The Proposal (2009) | £1,489,268 | £3,637,109 | £6,886,749 | -54% | 2 |
| 5 (3) |  | Ice Age: Dawn of the Dinosaurs (2009) | £1,143,211 | £3,896,956 | £29,154,739 | -47% | 5 |
| 6 (new) |  | Land of the Lost (2009) | £642,553 | £642,553 | £642,553 | new | 1 |
| 7 (4) |  | Brüno (2009) | £612,577 | £1,576,091 | £14,729,716 | -49% | 4 |
| 8 (5) |  | The Hangover (2009) | £517,895 | £1,118,139 | £20,603,489 | -25% | 8 |
| 9 (new) | | Coco Before Chanel (2009) | £423,268 | £423,268 | £423,268 | new | 1 |
| 10 (new) |  | Love Aaj Kal (2009) | £405,673 | £405,673 | £405,673 | new | 1 |
| 11 (6) |  | Transformers: Revenge of the Fallen (2009) | £218,205 | £654,459 | £26,539,878 | -48% | 7 |
| 12 (9) |  | Moon (2009) | £117,851 | £251,556 | £700,394 | -15% | 3 |
| 13 (8) |  | My Sisters Keeper (2009) | £115,990 | £441,161 | £6,043,360 | -48% | 6 |
| 14 (7) |  | Public Enemies (2009) | £108,541 | £333,452 | £6,686,950 | -61% | 5 |
| 15 (10) |  | Antichrist (2009) | £48,700 | £136,831 | £235,923 | -51% | 2 |