| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (new) |  | How to Lose Friends and Alienate People (2008) | £1,154,607 | £1,154,607 | £1,154,607 | new | 1 |
| 2 (2) |  | Taken (2008) | £1,096,324 | £1,938,056 | £3,104,042 | -6% | 2 |
| 3 (1) |  | Tropic Thunder (2008) | £987,191 | £1,726,628 | £6,765,139 | -27% | 3 |
| 4 (5) |  | Mamma Mia! (2008) | £771,647 | £1,416,668 | £64,147,403 | 21% | 13 |
| 5 (4) |  | Death Race (2008) | £448,059 | £859,346 | £1,542,384 | -34% | 2 |
| 6 (7) |  | The Boy In the Striped Pajamas (2008) | £436,194 | £735,086 | £2,791,967 | 7% | 4 |
| 7 (3) |  | Righteous Kill (2008) | £422,654 | £811,691 | £1,580,494 | -45% | 2 |
| 8 (new) |  | Brideshead Revisited (2008) | £375,270 | £375,270 | £375,270 | new | 1 |
| 9 (new) |  | Fly Me to the Moon 3D (2008) | £311,791 | £311,791 | £311,791 | new | 1 |
| 10 (6) |  | The Women (2008) | £265,859 | £616,127 | £3,704,806 | -34% | 4 |
| 11 (10) |  | Disaster Movie (2008) | £247,563 | £327,548 | £2,952,798 | -8% | 5 |
| 12 (new) | | Kidnap (2008) | £243,309 | £243,309 | £243,309 | new | 1 |
| 13 (8) |  | The Duchess (2008) | £234,391 | £666,980 | £6,360,913 | -33% | 5 |
| 14 (9) |  | Pineapple Express (2008) | £183,282 | £390,840 | £3,611,471 | -39% | 4 |
| 15 (13) |  | Il Y a Longtemps Que Je Taime (2008) | £149,037 | £255,694 | £372,684 | 22% | 2 |