| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (new) |  | Tropic Thunder (2008) | £2,483,568 | £2,483,568 | £2,483,568 | new | 1 |
| 2 (2) |  | Mamma Mia! (2008) | £708,489 | £1,512,702 | £61,653,876 | -33% | 11 |
| 3 (4) |  | The Women (2008) | £605,390 | £1,328,812 | £2,194,122 | -30% | 2 |
| 4 (1) |  | Pineapple Express (2008) | £547,701 | £1,191,915 | £2,564,826 | -60% | 2 |
| 5 (5) |  | The Duchess (2008) | £518,865 | £1,312,613 | £4,767,223 | -39% | 3 |
| 6 (8) |  | The Boy In the Striped Pajamas (2008) | £451,446 | £822,291 | £1,335,944 | -12% | 2 |
| 7 (3) |  | Rocknrolla (2008) | £439,848 | £909,617 | £4,275,696 | -52% | 3 |
| 8 (7) |  | Disaster Movie (2008) | £371,142 | £494,263 | £2,262,969 | -37% | 3 |
| 9 (6) |  | Step Brother's (2008) | £311,957 | £600,460 | £5,846,131 | -50% | 4 |
| 10 (9) |  | The Strangers (2008) | £216,437 | £391,658 | £4,025,916 | -47% | 4 |
| 11 (10) |  | The Dark Knight (2008) | £211,370 | £379,285 | £48,020,515 | -40% | 9 |
| 12 (11) |  | Hellboy II: The Golden Army (2008) | £104,068 | £180,079 | £7,379,488 | -53% | 5 |
| 13 (13) |  | WALL•E (2008) | £91,380 | £110,995 | £22,340,631 | -42% | 10 |
| 14 (15) |  | Wild Child (2008) | £82,665 | £95,467 | £4,971,063 | -38% | 6 |
| 15 (12) |  | Eden Lake (2008) | £78,729 | £212,731 | £404,758 | -59% | 2 |
| 16 (new) | | Then She Found Me (2008) | £44,493 | £44,493 | £44,493 | new | 1 |
| 17 (new) |  | Linha De Passe (2008) | £34,156 | £34,156 | £34,156 | new | 1 |
| 18 (new) |  | The Wave (2008) | £27,981 | £27,981 | £27,981 | new | 1 |
| 19 (new) | | Unrelated (2008) | £13,248 | £13,248 | £13,248 | new | 1 |
| 20 (new) |  | Saas Bahu Aur Sensex (2008) | £12,372 | £12,372 | £12,372 | new | 1 |
| 21 (18) |  | Man On Wire (2008) | £10,449 | £30,326 | £798,644 | -53% | 8 |
| 22 (new) | | The Chaser (2008) | £9,651 | £9,651 | £9,651 | new | 1 |
| 23 (19) |  | Somers Town (2008) | £8,725 | £25,848 | £518,964 | -60% | 5 |
| 24 (20) |  | Angus, Thongs and Perfect Snogging (2008) | £7,295 | £7,657 | £5,425,203 | -6% | 9 |
| 25 (21) |  | Miss Pettigrew Lives For a Day (2008) | £6,908 | £16,490 | £399,667 | -8% | 6 |
| 26 (17) |  | The Chronicles of Narnia: Prince Caspian (2008) | £3,678 | £12,228 | £11,652,063 | -86% | 13 |
| 27 (23) |  | The Edge of Love (2008) | £1,242 | £6,803 | £1,480,865 | -42% | 13 |
| 28 (26) |  | Savage Grace (2007) | £724 | £520 | £173,450 | 14% | 11 |
| 29 (new) | | Live! (2008) | £635 | £635 | £635 | new | 1 |
| 30 (new) |  | The Girl Who Leapt Through Time (2006) | £430 | £430 | £430 | new | 1 |