| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (2) |  | Forces of Nature (1999) | £493,897 | £767,584 | £1,497,792 | -32% | 2 |
| 2 (1) |  | I Still Know What You Did Last Summer (1999) | £486,127 | £796,896 | £1,599,394 | -39% | 2 |
| 3 (3) |  | The Waterboy (1999) | £367,353 | £575,632 | £2,515,542 | -41% | 3 |
| 4 (new) |  | Best Laid Plans (1999) | £259,221 | £259,221 | £259,221 | new | 1 |
| 5 (new) |  | True Crime (1999) | £189,149 | £189,149 | £189,149 | new | 1 |
| 6 (4) |  | eXistenZ (1999) | £178,550 | £307,817 | £1,173,671 | -38% | 3 |
| 7 (new) |  | Shuang Long Hui (1992) | £170,661 | £170,661 | £170,661 | new | 1 |
| 8 (7) |  | The Rugrats Movie (1998) | £160,600 | £183,175 | £12,064,035 | -28% | 8 |
| 9 (5) |  | 8mm (1999) | £160,012 | £296,613 | £2,217,761 | -43% | 4 |
| 10 (9) |  | An Ideal Husband (1999) | £137,704 | £262,101 | £2,281,095 | -33% | 5 |
| 11 (8) |  | The Faculty (1999) | £130,958 | £210,667 | £4,346,266 | -40% | 6 |
| 12 (6) |  | Message In a Bottle (1999) | £119,112 | £256,043 | £1,922,276 | -47% | 4 |
| 13 (10) |  | Waking Ned Devine (1999) | £81,431 | £153,582 | £6,665,029 | -41% | 9 |
| 14 (11) |  | Swing (1999) | £79,097 | £145,624 | £277,762 | -40% | 2 |
| 15 (12) |  | Mighty Joe Young (1999) | £75,520 | £63,771 | £3,939,087 | -30% | 8 |