| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (1) |  | Up (2009) | £5,162,325 | £7,505,632 | £13,917,468 | -19% | 2 |
| 2 (new) |  | Couples Retreat (2009) | £1,825,142 | £1,825,142 | £1,825,142 | new | 1 |
| 3 (new) |  | The Imaginarium of Doctor Parnassus (2009) | £905,786 | £905,786 | £905,786 | new | 1 |
| 4 (3) |  | The Invention of Lying (2009) | £589,914 | £1,063,391 | £4,847,173 | -46% | 3 |
| 5 (2) |  | Zombieland (2009) | £576,932 | £1,099,608 | £2,340,592 | -54% | 2 |
| 6 (4) |  | Fame (2009) | £455,699 | £822,027 | £7,876,009 | -50% | 4 |
| 7 (new) |  | Triangle (2009) | £260,626 | £260,626 | £260,626 | new | 1 |
| 8 (6) |  | Halloween II (2009) | £237,429 | £544,446 | £1,067,107 | -55% | 2 |
| 9 (5) |  | Love Happens (2009) | £217,696 | £564,435 | £1,124,159 | -61% | 2 |
| 10 (new) | | Blue (2009) | £215,962 | £215,962 | £215,962 | new | 1 |
| 11 (7) |  | Cloudy With a Chance of Meatballs (2009) | £208,789 | £273,952 | £5,684,375 | -42% | 5 |
| 12 (8) |  | Surrogates (2009) | £108,910 | £258,197 | £3,021,803 | -66% | 4 |
| 13 (new) | | Main Aur Mrs. Khanna (2009) | £89,299 | £89,299 | £89,299 | new | 1 |
| 14 (9) |  | District 9 (2009) | £76,582 | £179,306 | £8,875,093 | -64% | 7 |
| 15 (new) |  | Aadhavan (2009) | £57,582 | £57,582 | £57,582 | new | 1 |
| 16 (new) |  | All the Best (2009) | £36,333 | £36,333 | £36,333 | new | 1 |
| 17 (new) |  | Ong-Bak: The Beginning (2009) | £32,478 | £32,478 | £32,478 | new | 1 |
| 18 (16) | | Creation (2009) | £26,812 | £68,391 | £709,664 | -45% | 4 |
| 19 (18) | | Fish Tank (2009) | £25,835 | £42,908 | £512,018 | -12% | 5 |
| 20 (new) | | Thirst (2009) | £22,829 | £22,829 | £22,829 | new | 1 |
| 21 (15) |  | Dorian Gray (2009) | £16,356 | £55,241 | £2,874,904 | -73% | 6 |
| 22 (new) | | Peraanmai (2009) | £6,031 | £6,031 | £6,031 | new | 1 |
| 23 (21) |  | Harry Potter and the Half Blood Prince (2009) | £5,717 | £8,818 | £50,695,471 | -45% | 13 |
| 24 (19) | | Le Donk and Scor Zay Zee (2009) | £4,095 | £26,951 | £52,317 | -84% | 2 |
| 25 (24) |  | Moon (2009) | £2,483 | £6,329 | £1,282,082 | -17% | 13 |
| 26 (23) | | Morris: A Life With Bells On (2009) | £2,307 | £6,500 | £50,422 | -33% | 3 |
| 27 (20) |  | The Firm (2009) | £629 | £3,739 | £869,680 | -94% | 5 |
| 28 (new) | | Pontypool (2009) | £500 | £500 | £500 | new | 1 |