| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (new) |  | The Naked Gun 2 ½: The Smell of Fear (1991) | £2,587,730 | £2,587,730 | £2,587,730 | new | 1 |
| 2 (1) |  | The Silence of the Lambs (1991) | £524,019 | £733,627 | £15,832,542 | -79% | 5 |
| 3 (new) |  | Navy Seals (1991) | £342,604 | £342,604 | £342,604 | new | 1 |
| 4 (2) |  | Not Without My Daughter (1991) | £293,091 | £381,018 | £967,200 | -50% | 2 |
| 5 (3) |  | The Pope Must Die (1991) | £221,443 | £310,020 | £875,753 | -61% | 2 |
| 6 (4) |  | Class Action (1991) | £110,812 | £149,596 | £382,035 | -52% | 2 |
| 7 (5) |  | A Kiss Before Dying (1991) | £104,429 | £146,201 | £678,791 | -33% | 3 |
| 8 (6) |  | Where Angels Fear to Tread (1991) | £98,094 | £137,332 | £274,663 | -29% | 2 |
| 9 (7) |  | The Hairdressers Husband (1991) | £55,434 | £77,608 | £721,198 | -50% | 4 |
| 10 (8) |  | Mermaids (1991) | £29,837 | £41,772 | £2,761,737 | -50% | 6 |
| 11 (12) |  | Graveyard Shift (1991) | £24,095 | £31,324 | £403,921 | -23% | 5 |
| 12 (14) |  | Problem Child (1991) | £20,355 | £27,479 | £1,200,727 | -9% | 6 |
| 13 (10) |  | L.A. Story (1991) | £16,649 | £24,141 | £3,262,297 | -62% | 7 |
| 14 (11) | | Riff Raff (1991) | £15,265 | £20,608 | £52,664 | -52% | 2 |
| 15 (15) | | Guilty By Suspicion (1991) | £6,563 | £8,532 | £562,712 | -60% | 6 |