UK Weekend Box Office
UK Box Office 28th August, 1981
| Title | Weekend | Week | Total | % Change | Total Weeks | ||
| 1 (new) |  | The Watcher In the Woods (1981) | £83,333 | £83,333 | £83,333 | new | 1 |
| 2 (2) |  | Raiders of the Lost Ark (1981) | £78,488 | £113,808 | £2,551,783 | -42% | 5 |
| 3 (1) |  | Arthur (1981) | £64,616 | £90,462 | £1,943,405 | -55% | 7 |