| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (1) |  | The Lord of the Rings: The Return of the King (2003) | £3,713,999 | £6,257,730 | £48,099,432 | -43% | 4 |
| 2 (new) |  | The Last Samurai (2004) | £2,723,081 | £2,723,081 | £2,723,081 | new | 1 |
| 3 (2) |  | Peter Pan (2003) | £988,482 | £1,560,235 | £6,426,945 | -40% | 3 |
| 4 (3) |  | LoveActually (2003) | £819,516 | £1,511,164 | £33,459,370 | -27% | 8 |
| 5 (new) |  | Lost In Translation (2003) | £797,071 | £797,071 | £797,071 | new | 1 |
| 6 (5) |  | Cold Mountain (2003) | £749,090 | £1,347,918 | £3,127,050 | -19% | 3 |
| 7 (4) |  | Stuck On You (2003) | £726,489 | £1,188,492 | £2,303,329 | -35% | 2 |
| 8 (6) |  | Freaky Friday (2003) | £526,328 | £836,642 | £5,367,190 | -38% | 4 |
| 9 (8) |  | Brother Bear (2003) | £255,826 | £379,814 | £4,824,937 | -44% | 6 |
| 10 (7) |  | Elf (2003) | £174,296 | £429,155 | £16,263,471 | -70% | 7 |
| 11 (9) |  | Out of Time (2003) | £144,320 | £305,897 | £1,293,993 | -58% | 3 |
| 12 (13) | | Touching the Void (2003) | £113,456 | £200,909 | £819,920 | -2% | 5 |
| 13 (12) |  | Master and Commander: The Far Side of the World (2003) | £98,158 | £188,470 | £6,684,302 | -17% | 8 |
| 14 (11) |  | American Splendor (2003) | £90,696 | £171,062 | £306,630 | -33% | 2 |
| 15 (10) |  | S.W.A.T. (2003) | £54,114 | £125,182 | £5,274,283 | -66% | 6 |