| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (new) |  | Quantum of Solace (2008) | £15,384,217 | £15,384,217 | £15,384,217 | new | 1 |
| 2 (1) |  | High School Musical 3: Senior Year (2008) | £2,742,682 | £9,373,048 | £17,782,423 | -67% | 2 |
| 3 (2) |  | Saw V (2008) | £953,397 | £2,194,827 | £4,631,644 | -61% | 2 |
| 4 (4) |  | Ghost Town (2008) | £786,690 | £2,085,839 | £3,433,517 | -42% | 2 |
| 5 (3) |  | Burn After Reading (2008) | £549,277 | £1,477,377 | £6,067,137 | -62% | 3 |
| 6 (6) |  | Igor (2008) | £347,656 | £1,489,326 | £3,241,465 | -23% | 3 |
| 7 (new) |  | Golmaal Returns (2008) | £192,842 | £192,842 | £192,842 | new | 1 |
| 8 (5) |  | Eagle Eye (2008) | £163,022 | £726,338 | £3,073,407 | -77% | 3 |
| 9 (9) |  | Mamma Mia! (2008) | £142,664 | £551,797 | £67,379,780 | -45% | 17 |
| 10 (new) |  | Hunger (2008) | £136,413 | £136,413 | £136,413 | new | 1 |
| 11 (7) |  | The House Bunny (2008) | £69,132 | £424,244 | £2,931,090 | -77% | 4 |
| 12 (new) |  | Of Time and the City (2008) | £57,195 | £57,195 | £57,195 | new | 1 |
| 13 (8) |  | Taken (2008) | £54,499 | £230,718 | £6,277,639 | -79% | 6 |
| 14 (10) |  | Mirrors (2008) | £48,609 | £216,724 | £2,620,025 | -79% | 4 |
| 15 (12) |  | The Boy In the Striped Pajamas (2008) | £47,704 | £200,703 | £4,175,750 | -57% | 8 |
| 16 (14) |  | City of Ember (2008) | £30,704 | £224,026 | £1,371,834 | -70% | 4 |
| 17 (new) | | Fashion (2008) | £20,984 | £20,984 | £20,984 | new | 1 |
| 18 (new) |  | Midnight Meat Train (2008) | £20,444 | £20,444 | £20,444 | new | 1 |
| 19 (11) |  | How to Lose Friends and Alienate People (2008) | £14,512 | £128,156 | £4,055,295 | -91% | 5 |
| 20 (18) |  | The Duchess (2008) | £13,204 | £40,485 | £6,913,447 | -44% | 9 |
| 21 (16) |  | Brideshead Revisited (2008) | £12,088 | £54,841 | £1,291,279 | -66% | 5 |
| 22 (22) |  | The Dark Knight (2008) | £9,449 | £18,857 | £48,546,431 | -43% | 15 |
| 23 (25) | | The Fall (2006) | £2,318 | £3,945 | £69,780 | 25% | 3 |
| 24 (30) |  | Miss Pettigrew Lives For a Day (2008) | £2,206 | £11,620 | £453,077 | 70% | 10 |
| 25 (29) |  | Man On Wire (2008) | £2,192 | £4,647 | £856,594 | 70% | 14 |
| 26 (23) |  | Stone of Destiny (2008) | £2,091 | £5,746 | £149,441 | -66% | 4 |
| 27 (26) |  | Somers Town (2008) | £1,212 | £2,476 | £560,042 | -27% | 10 |
| 28 (24) | | Unrelated (2008) | £1,093 | £4,017 | £91,255 | -61% | 7 |
| 29 (27) |  | Wild Child (2008) | £811 | £3,533 | £5,125,958 | -50% | 12 |
| 30 (32) |  | The Edge of Love (2008) | £709 | £2,773 | £1,509,167 | 97% | 16 |
| 31 (28) | | Outlanders (2008) | £330 | £549 | £2,062 | -78% | 2 |
| 32 (21) |  | Incendiary (2008) | £144 | £5,620 | £24,584 | -99% | 2 |