| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (2) |  | The Dark Knight () | £2,302,866 | £5,467,071 | £40,153,039 | -44% | 4 |
| 2 (3) |  | Mamma Mia! () | £2,208,482 | £6,037,781 | £45,205,845 | -21% | 6 |
| 3 (new) |  | You Don't Mess With the Zohan (2008) | £1,520,637 | £1,520,637 | £1,520,637 | new | 1 |
| 4 (1) |  | The Mummy: Tomb of the Dragon Emperor () | £1,429,842 | £3,722,539 | £8,157,189 | -68% | 2 |
| 5 (new) |  | Wild Child () | £1,177,472 | £1,177,472 | £1,177,472 | new | 1 |
| 6 (new) |  | Star Wars: The Clone Wars () | £895,300 | £895,300 | £895,300 | new | 1 |
| 7 (4) |  | WALL•E () | £783,335 | £2,194,847 | £19,165,909 | -44% | 5 |
| 8 (9) |  | Space Chimps () | £230,767 | £749,385 | £2,410,362 | -43% | 3 |
| 9 (8) |  | Kung-Fu Panda (2008) | £223,660 | £731,286 | £18,917,586 | -47% | 7 |
| 10 (6) | | Singh Is Kinng () | £178,035 | £457,966 | £951,247 | -64% | 2 |
| 11 (7) |  | Angus, Thongs and Perfect Snogging () | £144,223 | £749,707 | £5,024,597 | -68% | 4 |
| 12 (5) |  | Make It Happen (2008) | £123,616 | £641,650 | £1,147,470 | -76% | 2 |
| 13 (new) |  | Bachna Ae Haseeno (2008) | £100,693 | £100,693 | £100,693 | new | 1 |
| 14 (new) |  | Miss Pettigrew Lives For a Day (2008) | £90,878 | £90,878 | £90,878 | new | 1 |
| 15 (10) |  | The X Files: I Want to Believe () | £63,787 | £355,748 | £2,186,864 | -81% | 3 |
| 16 (14) |  | Man On Wire () | £62,110 | £156,238 | £462,395 | -40% | 3 |
| 17 (new) |  | God Tussi Great Ho (2008) | £51,800 | £51,800 | £51,800 | new | 1 |
| 18 (new) | | Sathyam () | £16,079 | £16,079 | £16,079 | new | 1 |
| 19 (17) |  | The Chronicles of Narnia: Prince Caspian () | £13,578 | £61,586 | £11,559,608 | -61% | 8 |
| 20 (19) |  | Cass (2008) | £8,930 | £21,983 | £123,199 | -61% | 3 |
| 21 (new) | | The Banishment () | £8,031 | £8,031 | £8,031 | new | 1 |
| 22 (20) |  | The Edge of Love (2008) | £5,610 | £21,200 | £1,232,203 | -44% | 8 |
| 23 (22) | | Before the Rains () | £3,467 | £8,396 | £51,586 | -30% | 4 |
| 24 (21) |  | Savage Grace () | £3,439 | £7,534 | £155,321 | -52% | 6 |
| 25 (25) |  | A Complete History of My Sexual Failures (2008) | £1,514 | £2,816 | £80,138 | 25% | 8 |
| 26 (23) | | Death Defying Acts (2008) | £1,384 | £4,842 | £8,819 | -65% | 2 |