| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (1) |  | Johnny English (2003) | £2,279,100 | £5,093,970 | £13,735,384 | -10% | 3 |
| 2 (4) |  | The Jungle Book 2 (2003) | £1,114,746 | £2,619,267 | £6,134,994 | 17% | 3 |
| 3 (3) |  | How to Lose a Guy In 10 Days (2003) | £978,544 | £2,076,581 | £3,324,556 | -22% | 2 |
| 4 (2) |  | Phone Booth (2003) | £970,518 | £2,054,563 | £3,439,603 | -30% | 2 |
| 5 (new) |  | Dreamcatcher (2003) | £729,525 | £729,525 | £729,525 | new | 1 |
| 6 (new) |  | Welcome to Collinwood (2003) | £688,465 | £688,465 | £688,465 | new | 1 |
| 7 (5) |  | Bulletproof Monk (2003) | £437,928 | £983,830 | £1,591,669 | -28% | 2 |
| 8 (7) |  | S Club Seeing Double (2003) | £319,497 | £795,847 | £1,838,839 | 24% | 3 |
| 9 (new) |  | 25th Hour (2003) | £198,341 | £198,341 | £198,341 | new | 1 |
| 10 (6) |  | The Recruit (2003) | £169,914 | £404,985 | £4,289,538 | -41% | 5 |
| 11 (8) |  | Shanghai Knights (2003) | £106,461 | £298,065 | £2,238,507 | -43% | 4 |
| 12 (13) |  | The Little Polar Bear (2003) | £87,315 | £226,677 | £456,649 | 17% | 3 |
| 13 (9) |  | Just Married (2003) | £57,250 | £173,019 | £3,661,467 | -37% | 6 |
| 14 (10) |  | The Pianist (2003) | £54,482 | £129,319 | £2,512,851 | -34% | 8 |
| 15 (11) |  | Blue Crush (2003) | £38,882 | £148,812 | £1,421,761 | -52% | 4 |