| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (1) |  | Saving Private Ryan (1998) | £2,077,362 | £4,027,295 | £6,731,817 | -23% | 2 |
| 2 (new) |  | Lethal Weapon 4 (1998) | £2,049,606 | £2,049,606 | £2,049,606 | new | 1 |
| 3 (2) |  | Lock, Stock & Two Smoking Barrels (1998) | £711,577 | £1,326,219 | £6,090,543 | -32% | 4 |
| 4 (3) |  | The Horse Whisperer (1998) | £326,402 | £727,248 | £4,500,391 | -40% | 4 |
| 5 (5) |  | Armageddon (1998) | £319,441 | £530,039 | £15,606,028 | -37% | 7 |
| 6 (4) |  | Doctor Dolittle (1998) | £318,233 | £438,928 | £17,979,060 | -37% | 8 |
| 7 (6) |  | The X Files (1998) | £210,426 | £426,182 | £8,065,802 | -50% | 5 |
| 8 (8) |  | Lost In Space (1998) | £68,895 | £100,010 | £10,502,011 | -44% | 8 |
| 9 (10) |  | The Last Days of Disco (1998) | £50,253 | £93,185 | £314,242 | -29% | 3 |
| 10 (9) |  | Godzilla (1998) | £49,639 | £65,519 | £15,831,198 | -42% | 10 |
| 11 (new) |  | Love Is the Devil: Study For a Portrait of Francis Bacon (1998) | £46,077 | £46,077 | £46,077 | new | 1 |
| 12 (7) |  | Species II (1998) | £34,921 | £111,415 | £831,695 | -74% | 3 |
| 13 (13) |  | The Spanish Prisoner (1998) | £30,700 | £51,366 | £362,406 | -20% | 4 |
| 14 (12) |  | The Land Girls (1998) | £27,632 | £66,841 | £249,354 | -37% | 3 |
| 15 (15) |  | The Wedding Singer (1998) | £25,109 | £48,290 | £9,241,078 | -12% | 16 |