| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (1) |  | Titanic (1997) | £3,657,613 | £5,745,322 | £30,631,202 | -5% | 5 |
| 2 (2) |  | Flubber (1998) | £1,471,733 | £1,913,253 | £4,940,818 | 16% | 3 |
| 3 (3) |  | In & Out (1997) | £689,734 | £965,628 | £1,889,179 | -25% | 2 |
| 4 (5) |  | Fairytale: A True Story (1997) | £427,076 | £597,906 | £870,201 | 36% | 2 |
| 5 (11) |  | The Boxer (1998) | £318,426 | £429,875 | £830,541 | 61% | 3 |
| 6 (new) |  | The Butcher Boy (1998) | £288,594 | £288,594 | £288,594 | new | 1 |
| 7 (10) |  | Paws (1997) | £276,646 | £387,304 | £525,035 | 50% | 2 |
| 8 (new) |  | The Postman (1998) | £198,021 | £198,021 | £198,021 | new | 1 |
| 9 (6) |  | The Devil's Advocate (1998) | £163,659 | £220,940 | £4,140,777 | -29% | 6 |
| 10 (9) |  | The Ice Storm (1997) | £140,173 | £196,242 | £647,956 | -22% | 3 |
| 11 (8) |  | Boogie Nights (1998) | £137,059 | £178,177 | £3,229,829 | -26% | 6 |
| 12 (7) |  | Up 'n' Under (1998) | £136,146 | £197,412 | £2,688,665 | -33% | 5 |
| 13 (13) |  | George of the Jungle (1997) | £127,391 | £178,347 | £8,163,866 | 24% | 10 |
| 14 (14) |  | Good Burger (1998) | £126,586 | £177,220 | £270,067 | 27% | 2 |
| 15 (12) |  | The Full Monty (1997) | £91,777 | £119,310 | £51,200,042 | -17% | 26 |