| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (1) |  | Tropic Thunder (2008) | £1,345,392 | £2,554,943 | £5,038,511 | -46% | 2 |
| 2 (new) |  | Taken (2008) | £1,165,986 | £1,165,986 | £1,165,986 | new | 1 |
| 3 (new) |  | Righteous Kill (2008) | £768,803 | £768,803 | £768,803 | new | 1 |
| 4 (new) |  | Death Race (2008) | £683,038 | £683,038 | £683,038 | new | 1 |
| 5 (2) |  | Mamma Mia! (2008) | £609,278 | £1,076,859 | £62,730,735 | -14% | 12 |
| 6 (3) |  | The Women (2008) | £405,396 | £894,557 | £3,088,679 | -33% | 3 |
| 7 (6) |  | The Boy In the Striped Pajamas (2008) | £403,965 | £720,937 | £2,056,881 | -11% | 3 |
| 8 (5) |  | The Duchess (2008) | £349,976 | £926,710 | £5,693,933 | -33% | 4 |
| 9 (4) |  | Pineapple Express (2008) | £300,402 | £655,805 | £3,220,631 | -45% | 3 |
| 10 (8) |  | Disaster Movie (2008) | £269,840 | £362,281 | £2,625,250 | -27% | 4 |
| 11 (7) |  | Rocknrolla (2008) | £200,487 | £488,909 | £4,764,605 | -54% | 4 |
| 12 (9) |  | Step Brother's (2008) | £131,502 | £308,506 | £6,154,637 | -58% | 5 |
| 13 (new) |  | Il Y a Longtemps Que Je Taime (2008) | £116,990 | £116,990 | £116,990 | new | 1 |
| 14 (new) |  | Appaloosa (2008) | £90,673 | £90,673 | £90,673 | new | 1 |
| 15 (11) |  | The Dark Knight (2008) | £88,230 | £226,143 | £48,246,658 | -58% | 10 |
| 16 (14) |  | Wild Child (2008) | £51,388 | £59,784 | £5,030,847 | -38% | 7 |
| 17 (12) |  | Hellboy II: The Golden Army (2008) | £27,774 | £67,868 | £7,447,356 | -73% | 6 |
| 18 (new) |  | Swing Vote (2008) | £27,374 | £27,374 | £27,374 | new | 1 |
| 19 (new) | | Hashar (2008) | £17,401 | £17,401 | £17,401 | new | 1 |
| 20 (15) |  | Eden Lake (2008) | £13,328 | £64,781 | £469,539 | -83% | 3 |
| 21 (19) | | Unrelated (2008) | £11,522 | £23,328 | £36,576 | -13% | 2 |
| 22 (new) |  | Redbelt (2008) | £10,303 | £10,303 | £10,303 | new | 1 |
| 23 (21) |  | Man On Wire (2008) | £6,695 | £22,189 | £820,833 | -36% | 9 |
| 24 (23) |  | Somers Town (2008) | £5,974 | £15,092 | £534,056 | -32% | 6 |
| 25 (24) |  | Angus, Thongs and Perfect Snogging (2008) | £4,115 | £5,659 | £5,430,862 | -44% | 10 |
| 26 (new) | | Alexandra (2008) | £3,343 | £3,343 | £3,343 | new | 1 |
| 27 (new) | | The Foot Fist Way (2008) | £3,049 | £3,049 | £3,049 | new | 1 |
| 28 (25) |  | Miss Pettigrew Lives For a Day (2008) | £3,045 | £13,904 | £413,571 | -56% | 7 |
| 29 (27) |  | The Edge of Love (2008) | £2,638 | £4,745 | £1,485,610 | 53% | 14 |
| 30 (28) |  | Savage Grace (2007) | £1,230 | £2,964 | £176,414 | 41% | 12 |
| 31 (26) |  | The Chronicles of Narnia: Prince Caspian (2008) | £1,111 | £1,491 | £11,653,554 | -70% | 14 |