| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (new) |  | Hellboy II: The Golden Army (2008) | £2,969,602 | £2,969,602 | £2,969,602 | new | 1 |
| 2 (2) |  | Mamma Mia! (2008) | £1,837,577 | £5,056,102 | £50,261,947 | -17% | 7 |
| 3 (new) |  | Get Smart (2008) | £1,542,005 | £1,542,005 | £1,542,005 | new | 1 |
| 4 (1) |  | The Dark Knight (2008) | £1,454,847 | £3,345,276 | £43,498,315 | -37% | 5 |
| 5 (3) |  | You Don't Mess With the Zohan (2008) | £781,953 | £2,039,745 | £3,560,382 | -49% | 2 |
| 6 (4) |  | The Mummy: Tomb of the Dragon Emperor (2008) | £641,421 | £1,834,301 | £9,991,490 | -55% | 3 |
| 7 (5) |  | Wild Child (2008) | £585,881 | £1,855,461 | £3,032,933 | -50% | 2 |
| 8 (7) |  | WALL•E (2008) | £459,574 | £1,346,036 | £20,511,945 | -41% | 6 |
| 9 (6) |  | Star Wars: The Clone Wars (2008) | £347,981 | £1,019,765 | £1,915,065 | -61% | 2 |
| 10 (8) |  | Space Chimps (2008) | £135,547 | £426,196 | £2,836,558 | -41% | 4 |
| 11 (9) |  | Kung-Fu Panda (2008) | £129,473 | £422,449 | £19,340,035 | -42% | 8 |
| 12 (new) |  | College Road Trip (2008) | £121,360 | £121,360 | £121,360 | new | 1 |
| 13 (new) |  | Somers Town (2008) | £121,345 | £121,345 | £121,345 | new | 1 |
| 14 (10) | | Singh Is Kinng (2008) | £102,038 | £229,980 | £1,181,227 | -43% | 3 |
| 15 (new) | | Shoot On Sight (2008) | £61,533 | £61,533 | £61,533 | new | 1 |