| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (1) |  | The Matrix Reloaded (2003) | £3,783,905 | £9,812,925 | £21,978,201 | -69% | 2 |
| 2 (new) |  | Bringing Down the House (2003) | £1,133,139 | £1,133,139 | £1,133,139 | new | 1 |
| 3 (2) |  | X-Men 2 (2003) | £454,234 | £1,237,539 | £19,540,997 | -50% | 5 |
| 4 (3) |  | Kangaroo Jack (2003) | £310,422 | £900,069 | £2,376,668 | -41% | 3 |
| 5 (new) |  | Ripleys Game (2003) | £244,457 | £244,457 | £244,457 | new | 1 |
| 6 (4) |  | Johnny English (2003) | £181,274 | £525,178 | £18,830,322 | -48% | 8 |
| 7 (5) |  | Old School (2003) | £89,668 | £220,625 | £2,116,703 | -48% | 4 |
| 8 (9) |  | The Jungle Book 2 (2003) | £87,934 | £270,921 | £8,078,774 | -42% | 8 |
| 9 (8) |  | How to Lose a Guy In 10 Days (2003) | £82,513 | £222,466 | £6,656,373 | -48% | 7 |
| 10 (11) | | Secretary (2003) | £79,953 | £180,524 | £567,387 | -34% | 3 |
| 11 (7) |  | Darkness Falls (2003) | £71,650 | £182,202 | £1,624,200 | -55% | 4 |
| 12 (10) |  | Phone Booth (2003) | £70,123 | £167,937 | £6,508,292 | -50% | 7 |
| 13 (6) |  | The Hot Chick (2003) | £68,045 | £235,998 | £405,450 | -60% | 2 |
| 14 (12) |  | Andaaz (2003) | £49,986 | £131,818 | £233,322 | -51% | 2 |
| 15 (13) |  | I Capture the Castle (2003) | £44,334 | £116,592 | £616,930 | -36% | 4 |