| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (1) |  | Up (2009) | £3,807,003 | £5,765,736 | £19,683,204 | -26% | 3 |
| 2 (new) |  | Saw VI (2009) | £1,736,287 | £1,736,287 | £1,736,287 | new | 1 |
| 3 (new) |  | Fantastic Mr. Fox (2009) | £1,517,312 | £1,517,312 | £1,517,312 | new | 1 |
| 4 (2) |  | Couples Retreat (2009) | £932,171 | £1,763,678 | £3,588,820 | -49% | 2 |
| 5 (new) |  | Cirque Du Freak: The Vampires Assistant (2009) | £798,641 | £798,641 | £798,641 | new | 1 |
| 6 (3) |  | The Imaginarium of Doctor Parnassus (2009) | £616,719 | £1,162,929 | £2,068,715 | -32% | 2 |
| 7 (4) |  | The Invention of Lying (2009) | £362,760 | £691,759 | £5,538,932 | -39% | 4 |
| 8 (5) |  | Zombieland (2009) | £323,815 | £660,615 | £3,001,207 | -44% | 3 |
| 9 (6) |  | Fame (2009) | £218,110 | £435,394 | £8,311,403 | -52% | 5 |
| 10 (11) |  | Cloudy With a Chance of Meatballs (2009) | £142,011 | £197,286 | £5,881,661 | -32% | 6 |
| 11 (7) |  | Triangle (2009) | £97,107 | £288,277 | £548,903 | -63% | 2 |
| 12 (10) | | Blue (2009) | £80,590 | £162,274 | £378,236 | -63% | 2 |
| 13 (8) |  | Halloween II (2009) | £65,570 | £224,261 | £1,291,368 | -72% | 3 |
| 14 (re) |  | Ice Age: Dawn of the Dinosaurs (2009) | £56,746 | £56,746 | £34,872,218 | RE | 11 |
| 15 (9) |  | Love Happens (2009) | £47,666 | £210,437 | £1,334,596 | -78% | 3 |
| 16 (new) |  | The Goods: Live Hard Sell Hard (2009) | £35,362 | £35,362 | £35,362 | new | 1 |
| 17 (new) |  | The Cove (2009) | £17,956 | £17,956 | £17,956 | new | 1 |
| 18 (19) | | Fish Tank (2009) | £13,066 | £29,316 | £541,334 | -49% | 6 |
| 19 (18) | | Creation (2009) | £11,780 | £44,947 | £754,611 | -56% | 5 |
| 20 (new) | | Johnny Mad Dog (2009) | £9,718 | £9,718 | £9,718 | new | 1 |
| 21 (21) |  | Dorian Gray (2009) | £8,989 | £25,204 | £2,900,108 | -45% | 7 |
| 22 (23) |  | Harry Potter and the Half Blood Prince (2009) | £3,734 | £6,368 | £50,701,839 | -35% | 14 |
| 23 (26) | | Morris: A Life With Bells On (2009) | £1,980 | £3,040 | £53,462 | -14% | 4 |
| 24 (25) |  | Moon (2009) | £1,172 | £4,160 | £1,286,242 | -53% | 14 |
| 25 (24) | | Le Donk and Scor Zay Zee (2009) | £478 | £5,776 | £58,093 | -88% | 3 |