| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (2) |  | My Stepmother Is An Alien (1988) | £269,327 | £363,591 | £686,908 | -17% | 2 |
| 2 (new) |  | A Nightmare On Elm Street 4: The Dream Master (1989) | £255,115 | £255,115 | £255,115 | new | 1 |
| 3 (1) |  | Rain Man (1989) | £220,422 | £297,570 | £5,618,140 | -35% | 10 |
| 4 (new) |  | Mississippi Burning (1988) | £175,136 | £175,136 | £175,136 | new | 1 |
| 5 (3) |  | Betrayed (1989) | £136,648 | £177,642 | £400,938 | -39% | 2 |
| 6 (4) |  | Working Girl (1988) | £118,831 | £154,480 | £2,753,727 | -38% | 6 |
| 7 (new) |  | Without a Clue (1988) | £112,404 | £112,404 | £112,404 | new | 1 |
| 8 (5) |  | The Dead Pool (1988) | £98,043 | £137,260 | £1,530,650 | -47% | 4 |
| 9 (new) |  | How to Get Ahead In Advertising (1989) | £90,887 | £90,887 | £90,887 | new | 1 |
| 10 (7) |  | Twins (1989) | £87,124 | £126,330 | £3,656,505 | -41% | 8 |
| 11 (new) |  | The January Man (1989) | £84,536 | £84,536 | £84,536 | new | 1 |
| 12 (6) |  | The Tall Guy (1989) | £83,896 | £113,260 | £1,673,712 | -50% | 4 |
| 13 (8) |  | Tequila Sunrise (1989) | £48,470 | £63,011 | £1,777,113 | -41% | 6 |
| 14 (9) |  | Alien Nation (1988) | £40,035 | £56,049 | £984,098 | -44% | 5 |
| 15 (new) |  | Getting It Right (1989) | £39,954 | £39,954 | £39,954 | new | 1 |