| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (new) |  | The Mummy: Tomb of the Dragon Emperor (2008) | £4,434,650 | £4,434,650 | £4,434,650 | new | 1 |
| 2 (1) |  | The Dark Knight (2008) | £4,090,024 | £9,311,139 | £34,685,968 | -39% | 3 |
| 3 (2) |  | Mamma Mia! (2008) | £2,803,272 | £7,058,141 | £39,168,064 | -11% | 5 |
| 4 (3) |  | WALL•E (2008) | £1,405,966 | £3,408,727 | £16,971,062 | -31% | 4 |
| 5 (new) |  | Make It Happen (2008) | £505,820 | £505,820 | £505,820 | new | 1 |
| 6 (new) | | Singh Is Kinng (2008) | £493,281 | £493,281 | £493,281 | new | 1 |
| 7 (5) |  | Angus, Thongs and Perfect Snogging (2008) | £453,516 | £1,390,171 | £4,274,890 | -37% | 3 |
| 8 (6) |  | Kung-Fu Panda (2008) | £419,648 | £1,124,524 | £18,186,300 | -33% | 6 |
| 9 (7) |  | Space Chimps (2008) | £404,179 | £1,097,434 | £1,660,977 | -28% | 2 |
| 10 (4) |  | The X Files: I Want to Believe (2008) | £343,336 | £943,907 | £1,831,116 | -61% | 2 |
| 11 (9) |  | Hancock (2008) | £180,532 | £486,856 | £24,410,925 | -61% | 6 |
| 12 (8) |  | The Love Guru (2008) | £146,198 | £606,855 | £1,105,684 | -71% | 2 |
| 13 (new) |  | The Fox and the Child (2008) | £132,441 | £132,441 | £132,441 | new | 1 |
| 14 (11) |  | Man On Wire (2008) | £102,818 | £207,649 | £306,157 | 4% | 2 |
| 15 (10) |  | Journey to the Center of the Earth (2008) | £90,523 | £239,358 | £3,333,993 | -44% | 5 |