| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (2) |  | Back to the Future (1985) | £1,033,749 | £1,447,249 | £2,848,366 | 45% | 3 |
| 2 (1) |  | Santa Claus: The Movie (1985) | £330,848 | £479,730 | £3,663,519 | -50% | 4 |
| 3 (new) |  | Silverado (1985) | £309,768 | £309,768 | £309,768 | new | 1 |
| 4 (3) |  | Legend (1985) | £197,253 | £266,292 | £584,424 | -38% | 2 |
| 5 (5) |  | The Goonies (1985) | £124,265 | £167,758 | £751,847 | 29% | 4 |
| 6 (new) |  | Enemy Mine (1985) | £106,380 | £106,380 | £106,380 | new | 1 |
| 7 (7) |  | My Beautiful Laundrette (1985) | £41,230 | £57,722 | £937,954 | -33% | 6 |
| 8 (8) |  | Plenty (1985) | £31,309 | £40,702 | £535,285 | -33% | 5 |
| 9 (9) |  | Turtle Diary (1985) | £28,757 | £38,822 | £260,013 | -10% | 3 |
| 10 (4) |  | Red Sonja (1985) | £20,919 | £30,333 | £481,819 | -80% | 4 |
| 11 (6) |  | Cocoon (1985) | £18,546 | £25,964 | £3,313,462 | -79% | 15 |
| 12 (10) |  | Prizzis Honor (1985) | £13,673 | £19,142 | £671,984 | -50% | 6 |
| 13 (12) |  | Letter to Brezhnev (1985) | £9,016 | £13,073 | £928,845 | -33% | 6 |
| 14 (11) | | Cat's Eye (1985) | £7,967 | £10,357 | £669,732 | -50% | 7 |
| 15 (13) |  | Weird Science (1985) | £5,843 | £7,888 | £617,543 | -57% | 8 |