| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (new) |  | Six Days Seven Nights (1998) | £908,713 | £908,713 | £908,713 | new | 1 |
| 2 (1) |  | City of Angels (1998) | £441,543 | £574,006 | £2,626,512 | -35% | 3 |
| 3 (2) |  | The Wedding Singer (1998) | £422,055 | £548,672 | £4,442,459 | -21% | 5 |
| 4 (3) |  | Mimic (1998) | £288,023 | £374,430 | £862,251 | -41% | 2 |
| 5 (5) |  | Sliding Doors (1998) | £251,629 | £327,118 | £8,311,554 | -21% | 10 |
| 6 (4) |  | The Object of My Affection (1998) | £236,260 | £307,138 | £646,810 | -30% | 2 |
| 7 (6) |  | Deep Impact (1998) | £152,253 | £213,154 | £7,906,967 | -32% | 8 |
| 8 (7) |  | Titanic (1997) | £101,814 | £1,147,630 | £65,413,414 | -18% | 24 |
| 9 (10) |  | Barneys Great Adventure (1998) | £74,243 | £100,228 | £258,999 | -27% | 2 |
| 10 (16) |  | Star Kid (1998) | £63,796 | £82,935 | £632,613 | 37% | 7 |
| 11 (new) |  | Love and Death On Long Island (1998) | £62,191 | £62,191 | £62,191 | new | 1 |
| 12 (9) |  | The Apostle (1998) | £57,489 | £74,736 | £830,147 | -44% | 4 |
| 13 (11) |  | Mousehunt (1998) | £54,627 | £71,015 | £5,529,448 | -26% | 14 |
| 14 (12) |  | Girls Night (1998) | £51,407 | £66,829 | £125,933 | -13% | 2 |
| 15 (13) |  | Wishmaster (1997) | £51,235 | £74,291 | £1,052,319 | -12% | 6 |