| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (1) |  | Shirley Valentine () | £1,844,467 | £2,582,254 | £4,417,848 | 0% | 2 |
| 2 (2) |  | Oliver & Company () | £199,487 | £269,307 | £5,450,290 | -49% | 4 |
| 3 (4) |  | The Abyss () | £185,696 | £250,690 | £1,987,563 | -45% | 4 |
| 4 (3) |  | Star Trek V: The Final Frontier () | £171,024 | £247,985 | £1,506,103 | -53% | 3 |
| 5 (5) |  | Shag () | £153,809 | £199,952 | £483,712 | -46% | 2 |
| 6 (new) |  | Halloween 4: The Return of Michael Myers (1988) | £147,065 | £147,065 | £147,065 | new | 1 |
| 7 (new) | | A Chorus of Disapproval () | £88,843 | £88,843 | £88,843 | new | 1 |
| 8 (6) |  | Dead Poets Society () | £53,937 | £75,512 | £3,321,830 | -50% | 7 |
| 9 (7) |  | The Cook, The Thief, His Wife & Her Lover (1989) | £51,336 | £74,437 | £813,298 | -47% | 4 |
| 10 (new) |  | The Rainbow () | £45,390 | £45,390 | £45,390 | new | 1 |
| 11 (11) |  | Batman (1989) | £29,978 | £40,470 | £11,283,487 | -23% | 13 |
| 12 (8) |  | Old Gringo (1989) | £26,003 | £33,804 | £88,411 | -52% | 2 |
| 13 (new) |  | Two Moon Junction () | £25,790 | £25,790 | £25,790 | new | 1 |
| 14 (9) | | Henry V () | £21,139 | £30,652 | £731,563 | -60% | 5 |
| 15 (10) |  | K-9 (1989) | £20,413 | £28,578 | £993,203 | -55% | 5 |
| 16 (12) |  | Erik the Viking (1989) | £16,777 | £22,649 | £927,198 | -50% | 6 |
| 17 (15) |  | Sex, Lies and Videotape () | £7,858 | £10,608 | £1,047,476 | -38% | 9 |
| 18 (14) |  | Lethal Weapon 2 (1989) | £7,644 | £9,937 | £7,340,583 | -45% | 11 |
| 19 (13) | | Queen of Hearts (1989) | £6,348 | £9,205 | £130,277 | -62% | 4 |
| 20 (16) |  | The Rachel Papers (1989) | £5,243 | £7,340 | £14,680 | -29% | 2 |