| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (new) |  | X-Men 2 (2003) | £7,037,861 | £7,037,861 | £7,037,861 | new | 1 |
| 2 (1) |  | Johnny English (2003) | £1,200,895 | £1,856,813 | £15,592,197 | -47% | 4 |
| 3 (3) |  | How to Lose a Guy In 10 Days (2003) | £752,743 | £1,247,521 | £4,572,077 | -23% | 3 |
| 4 (4) |  | Phone Booth (2003) | £691,595 | £1,148,446 | £4,588,049 | -29% | 3 |
| 5 (2) |  | The Jungle Book 2 (2003) | £451,821 | £668,336 | £6,803,330 | -59% | 4 |
| 6 (5) |  | Dreamcatcher (2003) | £346,700 | £667,449 | £1,396,974 | -52% | 2 |
| 7 (6) |  | Welcome to Collinwood (2003) | £325,831 | £607,909 | £1,296,374 | -53% | 2 |
| 8 (8) |  | S Club Seeing Double (2003) | £128,301 | £178,743 | £2,017,582 | -60% | 4 |
| 9 (9) |  | 25th Hour (2003) | £125,451 | £237,786 | £436,127 | -37% | 2 |
| 10 (7) |  | Bulletproof Monk (2003) | £124,874 | £288,674 | £1,880,343 | -71% | 3 |
| 11 (10) |  | The Recruit (2003) | £54,382 | £127,916 | £4,417,454 | -68% | 6 |
| 12 (new) |  | The Heart of Me (2003) | £52,466 | £52,466 | £52,466 | new | 1 |
| 13 (new) | | Half Past Dead (2002) | £45,708 | £45,708 | £45,708 | new | 1 |
| 14 (new) |  | The Leopard (2003) | £39,102 | £39,102 | £39,102 | new | 1 |
| 15 (12) |  | The Little Polar Bear (2003) | £35,377 | £48,110 | £504,759 | -59% | 4 |