UK Box Office 1st September, 1978
| Title | Weekend | Week | Total | % Change | Total Weeks | ||
| 1 (1) |  | Herbie Goes to Monte Carlo (1978) | £322,223 | £418,890 | £1,063,336 | -50% | 2 |
| 2 (new) | The Legacy (1978) | £189,416 | £189,416 | £189,416 | new | 1 | |
| 3 (2) | Convoy (1978) | £165,095 | £239,388 | £569,578 | -50% | 2 | |
| 4 (3) |  | Midnight Express (1978) | £40,851 | £53,106 | £881,724 | -55% | 4 |
| 5 (4) |  | Revenge of the Pink Panther (1978) | £8,875 | £12,425 | £1,972,580 | -47% | 8 |
| 6 (5) |  | The Wild Geese (1978) | £5,473 | £7,662 | £1,660,759 | -44% | 9 |