UK Weekend Box Office
UK Box Office 20th March, 1981
| Title | Weekend | Week | Total | % Change | Total Weeks | ||
| 1 (1) |  | Private Benjamin () | £485,938 | £631,719 | £1,134,844 | -3% | 2 |
| 2 (2) |  | Ordinary People (1981) | £228,196 | £330,884 | £1,436,974 | -50% | 3 |
| 3 (3) |  | Raging Bull (1981) | £15,095 | £20,378 | £707,762 | -41% | 5 |
| 4 (4) |  | Battle Beyond the Stars () | £10,736 | £13,957 | £340,820 | -47% | 5 |
| 5 (5) |  | Flash Gordon () | £3,218 | £4,183 | £8,832,050 | -78% | 15 |