UK Box Office 21st August, 1998
| Title | Weekend | Week | Total | % Change | Total Weeks | ||
| 1 (new) |  | The X Files (1998) | £2,506,148 | £2,506,148 | £2,506,148 | new | 1 |
| 2 (1) |  | Armageddon (1998) | £1,687,625 | £3,316,271 | £10,307,264 | -25% | 3 |
| 3 (2) |  | Doctor Dolittle (1998) | £1,297,925 | £2,643,822 | £12,873,913 | -6% | 4 |
| 4 (4) |  | Lost In Space (1998) | £567,881 | £1,200,301 | £8,875,058 | -28% | 4 |
| 5 (5) |  | Godzilla (1998) | £304,251 | £639,409 | £14,859,930 | -12% | 6 |
| 6 (3) |  | The Avengers (1998) | £303,219 | £766,480 | £1,703,646 | -68% | 2 |
| 7 (6) |  | The Wedding Singer (1998) | £88,334 | £195,095 | £8,880,151 | -30% | 12 |
| 8 (7) |  | Barneys Great Adventure (1998) | £76,200 | £159,876 | £1,960,052 | 1% | 9 |
| 9 (8) |  | The Little Mermaid (1989) Rerelease | £66,336 | £168,163 | £1,593,431 | 12% | 14 |
| 10 (9) |  | The Magic Sword: Quest For Camelot (1998) | £56,630 | £122,881 | £824,742 | 4% | 5 |
| 11 (10) |  | Eve's Bayou (1997) | £45,348 | £82,421 | £133,596 | -11% | 2 |
| 12 (11) |  | Gang Related (1998) | £30,307 | £53,250 | £95,133 | -28% | 2 |
| 13 (new) |  | Le Bossu (1998) | £29,802 | £29,802 | £29,802 | new | 1 |
| 14 (15) |  | The Daytrippers (1997) | £23,100 | £46,443 | £271,605 | -18% | 5 |
| 15 (16) |  | Titanic (1997) | £22,991 | £131,038 | £69,087,838 | 9% | 31 |