| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (1) |  | Terminator 2: Judgment Day (1991) | £1,085,761 | £1,411,489 | £19,015,024 | -30% | 6 |
| 2 (2) |  | Robin Hood: Prince of Thieves (1991) | £1,043,864 | £1,461,410 | £20,530,893 | -29% | 10 |
| 3 (new) |  | Stepping Out (1991) | £914,787 | £914,787 | £914,787 | new | 1 |
| 4 (new) |  | F/X2 (1991) | £394,825 | £394,825 | £394,825 | new | 1 |
| 5 (3) |  | Regarding Henry (1991) | £347,704 | £504,171 | £1,101,417 | -42% | 2 |
| 6 (4) |  | True Identity (1991) | £228,607 | £297,189 | £754,403 | -50% | 2 |
| 7 (new) | | Teen Agent (1991) | £208,434 | £208,434 | £208,434 | new | 1 |
| 8 (5) |  | Only the Lonely (1991) | £170,070 | £246,602 | £610,686 | -53% | 2 |
| 9 (6) |  | Jungle Fever (1991) | £126,110 | £182,860 | £824,274 | -32% | 3 |
| 10 (9) |  | New Jack City (1991) | £100,407 | £130,529 | £1,401,205 | -25% | 4 |
| 11 (8) |  | Oscar (1991) | £96,020 | £134,428 | £658,484 | -31% | 3 |
| 12 (7) |  | Dying Young (1991) | £94,597 | £132,436 | £1,702,049 | -45% | 4 |
| 13 (10) |  | The Naked Gun 2 ½: The Smell of Fear (1991) | £86,000 | £124,700 | £10,569,363 | -9% | 13 |
| 14 (11) |  | Soapdish (1991) | £61,042 | £79,355 | £1,152,813 | -31% | 5 |
| 15 (14) |  | Close My Eyes (1991) | £43,111 | £60,355 | £268,583 | -29% | 3 |