| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (new) |  | Enemy of the State (1998) | £1,420,216 | £1,420,216 | £1,420,216 | new | 1 |
| 2 (2) |  | The Prince of Egypt (1998) | £337,057 | £1,025,381 | £1,750,940 | -54% | 2 |
| 3 (3) |  | The Mask of Zorro (1998) | £329,295 | £832,106 | £2,901,617 | -51% | 3 |
| 4 (1) |  | Rush Hour (1998) | £253,075 | £692,286 | £5,693,182 | -66% | 4 |
| 5 (4) |  | The Parent Trap (1998) | £251,719 | £849,071 | £1,969,390 | -43% | 3 |
| 6 (new) |  | What Dreams May Come (1998) | £230,610 | £230,610 | £230,610 | new | 1 |
| 7 (5) |  | Babe: Pig In the City (1998) | £134,459 | £571,188 | £2,316,416 | -54% | 4 |
| 8 (6) |  | Antz (1998) | £119,371 | £417,218 | £9,059,498 | -50% | 8 |
| 9 (7) |  | Out of Sight (1998) | £46,027 | £159,315 | £2,871,010 | -73% | 5 |
| 10 (8) |  | Blade (1998) | £45,711 | £131,062 | £5,949,562 | -64% | 7 |
| 11 (14) |  | Kuch Kuch Hota Hai (1998) | £30,744 | £47,771 | £1,441,828 | 1% | 9 |
| 12 (11) |  | There's Something About Mary (1998) | £22,046 | £63,637 | £15,574,212 | -58% | 14 |
| 13 (9) |  | The Negotiator (1998) | £20,124 | £79,694 | £1,415,991 | -77% | 5 |
| 14 (10) |  | Small Soldiers (1998) | £19,242 | £98,751 | £6,116,635 | -69% | 10 |
| 15 (new) |  | The Mighty (1998) | £14,104 | £14,104 | £14,104 | new | 1 |