| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (1) |  | LoveActually (2003) | £2,273,706 | £4,087,478 | £25,166,894 | -29% | 4 |
| 2 (2) |  | Elf (2003) | £1,855,471 | £2,490,484 | £10,124,990 | -20% | 3 |
| 3 (3) |  | S.W.A.T. (2003) | £958,361 | £1,585,074 | £3,545,355 | -51% | 2 |
| 4 (5) |  | Brother Bear (2003) | £728,663 | £947,266 | £1,834,587 | -18% | 2 |
| 5 (4) |  | Master and Commander: The Far Side of the World (2003) | £712,849 | £1,259,328 | £5,230,533 | -35% | 4 |
| 6 (8) |  | Kal Ho Naa Ho (2003) | £173,073 | £266,131 | £1,141,168 | -36% | 3 |
| 7 (6) |  | The Matrix Revolutions (2003) | £172,155 | £384,006 | £17,631,436 | -39% | 6 |
| 8 (new) |  | The Fighting Temptations (2003) | £151,994 | £151,994 | £151,994 | new | 1 |
| 9 (7) | | Timeline (2003) | £147,391 | £274,364 | £553,869 | -47% | 2 |
| 10 (new) | | Touching the Void (2003) | £115,332 | £115,332 | £115,332 | new | 1 |
| 11 (9) |  | Finding Nemo (2003) | £113,170 | £153,032 | £37,113,810 | -40% | 10 |
| 12 (new) | | Dead End (2003) | £52,130 | £52,130 | £52,130 | new | 1 |
| 13 (12) |  | Thirteen (2003) | £45,919 | £86,556 | £140,109 | -14% | 2 |
| 14 (re) |  | The Lord of the Rings: The Two Towers (2002) | £42,378 | £42,378 | £57,104,876 | RE | 14 |
| 15 (13) |  | Kill Bill Volume 1 (2003) | £41,318 | £69,924 | £11,453,044 | -22% | 10 |