| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (new) |  | The Chronicles of Narnia: The Lion the Witch and the Wardrobe (2005) | £8,884,111 | £8,884,111 | £8,884,111 | new | 1 |
| 2 (1) |  | Harry Potter and the Goblet of Fire (2005) | £2,143,238 | £3,534,195 | £40,547,481 | -56% | 4 |
| 3 (2) |  | Flightplan (2005) | £671,978 | £1,186,197 | £4,996,112 | -46% | 3 |
| 4 (4) |  | Keeping Mum (2005) | £338,718 | £710,459 | £1,356,345 | -48% | 2 |
| 5 (3) |  | The Exorcism of Emily Rose (2005) | £338,122 | £647,776 | £3,356,653 | -56% | 3 |
| 6 (5) |  | Doom (2005) | £262,563 | £530,396 | £1,142,483 | -57% | 2 |
| 7 (6) |  | Mrs. Henderson Presents (2005) | £205,982 | £608,152 | £2,514,304 | -60% | 3 |
| 8 (7) |  | The Constant Gardener (2005) | £188,614 | £364,544 | £4,214,234 | -41% | 5 |
| 9 (new) |  | March of the Penguins (2005) | £183,798 | £183,798 | £183,798 | new | 1 |
| 10 (8) |  | Nanny Mcphee (2005) | £70,579 | £93,260 | £16,254,834 | -71% | 8 |
| 11 (new) |  | Neal 'n' Nikki (2005) | £60,075 | £60,075 | £60,075 | new | 1 |
| 12 (10) |  | In Her Shoes (2005) | £58,254 | £158,178 | £4,318,014 | -72% | 5 |
| 13 (9) |  | Transporter 2 (2005) | £50,697 | £144,014 | £991,940 | -77% | 3 |
| 14 (11) |  | Wallace & Gromit: The Curse of the Were-Rabbit (2005) | £43,369 | £68,853 | £31,843,897 | -70% | 9 |
| 15 (13) |  | Kiss, Kiss! Bang Bang (2005) | £35,234 | £68,594 | £1,512,244 | -45% | 5 |