| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (1) |  | Charlie's Angels: Full Throttle () | £1,581,273 | £3,250,170 | £6,523,248 | -52% | 2 |
| 2 (2) |  | Bruce Almighty (2003) | £1,518,232 | £3,031,849 | £16,423,840 | -53% | 3 |
| 3 (new) |  | Daddy Day Care (2003) | £796,259 | £796,259 | £796,259 | new | 1 |
| 4 (new) |  | Veronica Guerin () | £271,996 | £271,996 | £271,996 | new | 1 |
| 5 (3) |  | 2 Fast 2 Furious (2003) | £225,229 | £553,131 | £6,720,986 | -64% | 4 |
| 6 (4) |  | The Matrix Reloaded (2003) | £121,955 | £347,389 | £32,069,708 | -61% | 8 |
| 7 (new) | | Whale Rider (2003) | £121,610 | £121,610 | £121,610 | new | 1 |
| 8 (new) |  | The In-Laws (2003) | £108,031 | £108,031 | £108,031 | new | 1 |
| 9 (5) |  | Wrong Turn (2003) | £87,395 | £260,915 | £1,187,564 | -68% | 3 |
| 10 (6) |  | Identity (2003) | £57,043 | £196,363 | £3,099,720 | -72% | 5 |
| 11 (10) |  | Piglets Big Movie (2003) | £52,977 | £135,751 | £253,380 | -27% | 3 |
| 12 (7) | | Nicholas Nickleby (2003) | £43,792 | £191,980 | £826,126 | -76% | 3 |
| 13 (9) | | Main Prem Ki Diwani Hoon (2003) | £37,437 | £83,667 | £402,211 | -55% | 3 |
| 14 (15) | | To Be and to Have () | £28,450 | £85,348 | £247,648 | -28% | 4 |
| 15 (8) |  | Anger Management () | £27,888 | £125,898 | £5,670,260 | -79% | 6 |
| 16 (11) | | Dark Blue (2003) | £24,952 | £85,895 | £155,944 | -64% | 2 |
| 17 (new) | | Qayamat () | £24,012 | £24,012 | £24,012 | new | 1 |
| 18 (14) |  | Ripleys Game () | £17,056 | £136,106 | £1,053,520 | -61% | 5 |
| 19 (19) |  | Chalte Chalte (2003) | £16,550 | £15,894 | £803,980 | 80% | 5 |
| 20 (16) | | Igby Goes Down () | £10,098 | £23,975 | £459,493 | -65% | 5 |