| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (new) |  | Terminator 3: Rise of the Machines (2003) | £6,080,369 | £6,080,369 | £6,080,369 | new | 1 |
| 2 (new) |  | Legally Blonde 2: Red, White & Blonde (2003) | £1,546,483 | £1,546,483 | £1,546,483 | new | 1 |
| 3 (new) |  | Spy Kids 3D: Game Over (2003) | £979,374 | £979,374 | £979,374 | new | 1 |
| 4 (2) |  | Bruce Almighty (2003) | £485,071 | £1,524,323 | £22,523,667 | -60% | 6 |
| 5 (8) |  | Veronica Guerin (2003) | £348,026 | £639,188 | £2,015,022 | 28% | 4 |
| 6 (1) |  | Hulk (2003) | £342,342 | £1,367,367 | £7,862,309 | -75% | 3 |
| 7 (7) |  | Piglets Big Movie (2003) | £341,676 | £985,648 | £2,493,692 | -29% | 6 |
| 8 (3) |  | Charlie's Angels: Full Throttle (2003) | £282,544 | £1,035,170 | £11,825,921 | -71% | 5 |
| 9 (4) |  | Sinbad Legend of the Seven Seas (2003) | £281,981 | £997,264 | £1,825,814 | -66% | 2 |
| 10 (5) |  | Daddy Day Care (2003) | £251,824 | £1,057,220 | £4,774,539 | -67% | 4 |
| 11 (6) |  | Agent Cody Banks (2003) | £120,839 | £642,928 | £1,177,240 | -77% | 2 |
| 12 (12) | | Goodbye Lenin (2003) | £85,438 | £207,149 | £342,460 | -37% | 2 |
| 13 (11) | | Whale Rider (2003) | £76,734 | £208,770 | £896,301 | -47% | 4 |
| 14 (9) |  | Buffalo Soldiers (2003) | £75,937 | £197,509 | £597,699 | -55% | 3 |
| 15 (new) | | Chori Chori (2003) | £48,913 | £48,913 | £48,913 | new | 1 |