| 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 |