UK Weekend Box Office
UK Box Office 27th March, 1981
| Title | Weekend | Week | Total | % Change | Total Weeks | ||
| 1 (new) |  | 9 to 5 (1980) | £618,218 | £618,218 | £618,218 | new | 1 |
| 2 (1) |  | Private Benjamin (1980) | £327,343 | £441,913 | £1,576,757 | -33% | 3 |
| 3 (2) |  | Ordinary People (1981) | £114,098 | £148,327 | £1,585,301 | -50% | 4 |
| 4 (3) |  | Raging Bull (1981) | £10,518 | £15,251 | £723,013 | -30% | 6 |
| 5 (4) |  | Battle Beyond the Stars (1980) | £5,651 | £8,194 | £349,014 | -47% | 6 |
| 6 (5) |  | Flash Gordon (1980) | £800 | £1,120 | £8,833,170 | -75% | 16 |