| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (1) |  | Iron Man (2008) | £1,917,925 | £2,836,934 | £12,996,686 | -3% | 3 |
| 2 (2) |  | What Happens In Vegas... (2008) | £1,513,887 | £2,249,169 | £3,512,262 | 17% | 2 |
| 3 (3) |  | Forgetting Sarah Marshall (2008) | £570,986 | £862,569 | £6,451,403 | 8% | 4 |
| 4 (5) |  | Nims Island (2008) | £450,375 | £518,490 | £2,129,808 | 30% | 3 |
| 5 (4) |  | Speed Racer (2008) | £410,610 | £531,836 | £893,938 | 12% | 2 |
| 6 (7) |  | Made of Honor (2008) | £285,040 | £461,670 | £1,944,757 | 2% | 3 |
| 7 (6) |  | Doomsday (2008) | £253,318 | £445,219 | £756,602 | -19% | 2 |
| 8 (8) |  | In Bruges (2008) | £133,829 | £207,487 | £4,533,917 | 23% | 10 |
| 9 (new) |  | Caramel (2008) | £122,790 | £122,790 | £122,790 | new | 1 |
| 10 (9) |  | 21 (2008) | £97,192 | £150,299 | £5,430,673 | 8% | 6 |
| 11 (new) |  | Charlie Bartlett (2008) | £97,181 | £97,181 | £97,181 | new | 1 |
| 12 (new) |  | Smart People (2008) | £88,235 | £88,235 | £88,235 | new | 1 |
| 13 (10) |  | The Eye (2008) | £83,511 | £134,057 | £1,783,992 | -6% | 4 |
| 14 (new) |  | Shutter (2008) | £72,574 | £72,574 | £72,574 | new | 1 |
| 15 (11) |  | Happy-Go-Lucky (2008) | £69,510 | £121,941 | £1,413,253 | 16% | 5 |