| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (new) |  | Catch Me If You Can (2003) | £3,720,957 | £3,720,957 | £3,720,957 | new | 1 |
| 2 (1) |  | 8 Mile (2002) | £1,414,861 | £2,364,064 | £11,013,509 | -44% | 3 |
| 3 (2) |  | Chicago (2003) | £1,248,340 | £2,422,815 | £7,975,054 | -35% | 6 |
| 4 (3) |  | The Lord of the Rings: The Two Towers (2002) | £1,068,462 | £1,719,122 | £52,756,818 | -35% | 7 |
| 5 (4) |  | Gangs of New York (2003) | £675,887 | £1,250,603 | £9,120,028 | -39% | 4 |
| 6 (7) |  | About Schmidt (2002) | £612,424 | £1,047,382 | £1,804,707 | -19% | 2 |
| 7 (5) |  | I Spy (2003) | £530,499 | £785,285 | £1,663,514 | -40% | 2 |
| 8 (6) |  | Ghost Ship (2003) | £462,760 | £855,693 | £1,640,258 | -41% | 2 |
| 9 (9) |  | Harry Potter and the Chamber of Secrets (2002) | £250,390 | £320,235 | £53,462,760 | -33% | 12 |
| 10 (8) |  | The Tuxedo (2003) | £223,273 | £319,612 | £3,144,073 | -51% | 4 |
| 11 (new) |  | The Banger Sisters (2003) | £201,731 | £201,731 | £201,731 | new | 1 |
| 12 (10) |  | The Pianist (2003) | £156,904 | £283,370 | £478,592 | -20% | 2 |
| 13 (13) |  | City of God (2003) | £102,587 | £190,374 | £1,693,912 | -24% | 5 |
| 14 (11) |  | Die Another Day (2002) | £72,274 | £134,244 | £35,924,004 | -62% | 11 |
| 15 (12) |  | Star Trek: Nemesis (2003) | £62,518 | £125,832 | £4,666,630 | -65% | 5 |