UK Weekend Box Office
UK Box Office 18th September, 1981
| Title | Weekend | Week | Total | % Change | Total Weeks | ||
| 1 (new) |  | Omen III: The Final Conflict (1981) | £614,141 | £614,141 | £614,141 | new | 1 |
| 2 (1) |  | Stripes (1981) | £153,535 | £222,626 | £1,266,661 | -50% | 3 |
| 3 (3) |  | Arthur (1981) | £46,307 | £60,199 | £2,079,116 | 46% | 10 |
| 4 (2) |  | The Watcher In the Woods (1981) | £10,417 | £15,105 | £407,772 | -89% | 4 |
| 5 (4) |  | For Your Eyes Only (1981) | £4,433 | £5,763 | £6,010,472 | -44% | 13 |