| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (1) |  | The Truman Show (1998) | £1,687,037 | £2,644,368 | £4,855,367 | -24% | 2 |
| 2 (10) |  | Mulan (1998) | £1,648,488 | £1,786,831 | £1,898,780 | 93% | 2 |
| 3 (2) |  | There's Something About Mary (1998) | £1,283,990 | £2,057,355 | £9,979,881 | -21% | 4 |
| 4 (3) |  | Elizabeth (1998) | £694,608 | £694,608 | £4,862,256 | -50% | 3 |
| 5 (4) |  | Saving Private Ryan (1998) | £675,992 | £1,250,263 | £15,149,037 | -27% | 6 |
| 6 (new) |  | A Perfect Murder (1998) | £632,292 | £632,292 | £632,292 | new | 1 |
| 7 (6) |  | Lock, Stock & Two Smoking Barrels (1998) | £369,988 | £617,586 | £9,613,710 | -15% | 8 |
| 8 (5) |  | Lethal Weapon 4 (1998) | £283,405 | £491,012 | £6,734,304 | -36% | 5 |
| 9 (7) |  | Ever After (1998) | £201,589 | £346,029 | £651,391 | -34% | 2 |
| 10 (new) |  | Kuch Kuch Hota Hai (1998) | £180,990 | £180,990 | £180,990 | new | 1 |
| 11 (9) |  | Doctor Dolittle (1998) | £153,855 | £196,893 | £19,199,088 | -17% | 12 |
| 12 (8) |  | Mercury Rising (1998) | £66,719 | £162,067 | £1,027,487 | -67% | 3 |
| 13 (11) |  | The Land Girls (1998) | £59,138 | £159,915 | £1,044,180 | -32% | 7 |
| 14 (15) |  | Divorcing Jack (1998) | £57,565 | £80,955 | £304,660 | 30% | 3 |
| 15 (13) | | Dancing At Lughnasa (1998) | £42,455 | £91,530 | £512,970 | -34% | 4 |