| Title | Weekend | Week | Total | % Change | Total Weeks | ||
| 1 (1) | ![]() | Antz (1998) | £1,737,782 | £2,309,635 | £3,960,197 | 5% | 2 |
| 2 (new) | ![]() | Blade (1998) | £1,642,390 | £1,642,390 | £1,642,390 | new | 1 |
| 3 (2) | ![]() | The Exorcist (1973) Rerelease | £609,195 | £1,141,985 | £6,246,912 | -48% | 50 |
| 4 (3) | ![]() | Snake Eyes (1998) | £443,076 | £778,275 | £1,522,184 | -40% | 2 |
| 5 (4) | ![]() | Small Soldiers (1998) | £388,644 | £485,795 | £5,048,273 | -23% | 4 |
| 6 (5) | ![]() | There's Something About Mary (1998) | £381,966 | £633,452 | £14,270,374 | -19% | 8 |
| 7 (6) | ![]() | Mulan (1998) | £340,585 | £412,934 | £8,065,127 | -26% | 6 |
| 8 (new) | ![]() | Hope Floats (1998) | £318,643 | £318,643 | £318,643 | new | 1 |
| 9 (7) | ![]() | The Truman Show (1998) | £279,418 | £470,282 | £9,369,721 | -35% | 6 |
| 10 (new) | ![]() | Fear and Loathing In Las Vegas (1998) | £206,498 | £206,498 | £206,498 | new | 1 |
| 11 (9) | ![]() | Saving Private Ryan (1998) | £143,432 | £277,504 | £17,284,661 | -24% | 10 |
| 12 (13) | ![]() | Kuch Kuch Hota Hai (1998) | £112,492 | £157,247 | £1,043,500 | -19% | 5 |
| 13 (10) | ![]() | Lock, Stock & Two Smoking Barrels (1998) | £108,189 | £210,486 | £11,077,435 | -35% | 12 |
| 14 (re) | ![]() | My Name Is Joe (1998) | £89,656 | £89,656 | £253,530 | re | 1 |
| 15 (15) | ![]() | Elizabeth (1998) | £17,645 | £17,645 | £5,280,086 | -63% | 7 |