| Title | Weekend | Week | Total | % Change | Total Weeks | ||
| 1 (new) | ![]() | Rush Hour (1998) | £1,809,093 | £1,809,093 | £1,809,093 | new | 1 |
| 2 (new) | ![]() | Babe: Pig In the City (1998) | £612,971 | £612,971 | £612,971 | new | 1 |
| 3 (1) | ![]() | Antz (1998) | £527,426 | £746,308 | £7,801,276 | -46% | 5 |
| 4 (2) | ![]() | Out of Sight (1998) | £497,920 | £936,273 | £1,805,528 | -43% | 2 |
| 5 (3) | ![]() | Blade (1998) | £328,447 | £626,819 | £5,202,433 | -51% | 4 |
| 6 (5) | ![]() | The Negotiator (1998) | £239,784 | £442,152 | £889,343 | -46% | 2 |
| 7 (4) | ![]() | Ronin (1998) | £226,302 | £466,617 | £2,280,143 | -57% | 3 |
| 8 (6) | ![]() | Small Soldiers (1998) | £140,622 | £179,921 | £5,843,031 | -36% | 7 |
| 9 (7) | ![]() | There's Something About Mary (1998) | £122,309 | £221,997 | £15,268,309 | -42% | 11 |
| 10 (8) | ![]() | Mulan (1998) | £81,865 | £94,880 | £8,636,389 | -54% | 9 |
| 11 (11) | ![]() | Saving Private Ryan (1998) | £46,076 | £86,773 | £17,687,082 | -41% | 13 |
| 12 (12) | ![]() | My Name Is Joe (1998) | £45,256 | £91,994 | £640,655 | -41% | 4 |
| 13 (re) | ![]() | Kuch Kuch Hota Hai (1998) | £43,511 | £43,511 | £1,302,596 | re | 6 |
| 14 (9) | ![]() | The Exorcist (1973) Rerelease | £41,933 | £121,612 | £7,143,595 | -72% | 53 |
| 15 (15) | ![]() | Elizabeth (1998) | £6,431 | £6,431 | £5,308,124 | -29% | 10 |