| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (2) |  | Cocoon (1985) | £204,231 | £275,712 | £3,008,639 | 14% | 12 |
| 2 (new) |  | Santa Claus: The Movie (1985) | £202,850 | £202,850 | £202,850 | new | 1 |
| 3 (new) |  | The Goonies (1985) | £194,117 | £194,117 | £194,117 | new | 1 |
| 4 (new) |  | Red Sonja (1985) | £164,867 | £164,867 | £164,867 | new | 1 |
| 5 (1) |  | Letter to Brezhnev (1985) | £154,094 | £223,436 | £799,620 | -21% | 3 |
| 6 (4) |  | My Beautiful Laundrette (1985) | £139,150 | £187,853 | £649,775 | -6% | 3 |
| 7 (5) |  | Prizzis Honor (1985) | £89,384 | £120,668 | £530,417 | -25% | 3 |
| 8 (3) |  | Plenty (1985) | £87,856 | £118,606 | £288,245 | -48% | 2 |
| 9 (7) | | Cat's Eye (1985) | £62,138 | £83,886 | £570,789 | -33% | 4 |
| 10 (6) |  | Weird Science (1985) | £43,270 | £56,251 | £549,790 | -57% | 5 |
| 11 (8) |  | St. Elmo's Fire (1985) | £37,422 | £52,391 | £783,916 | -50% | 5 |
| 12 (9) |  | Mad Max Beyond Thunderdome (1985) | £32,096 | £44,934 | £1,333,062 | -50% | 7 |
| 13 (10) |  | The Black Cauldron (1985) | £9,186 | £13,320 | £1,076,534 | -33% | 8 |
| 14 (11) |  | Subway (1985) | £5,430 | £7,602 | £157,943 | -60% | 4 |
| 15 (12) |  | Fletch (1985) | £4,729 | £6,857 | £1,188,616 | -50% | 10 |