UK Box Office 26th January, 1979
| Title | Weekend | Week | Total | % Change | Total Weeks | ||
| 1 (new) |  | Halloween (1978) | £700,048 | £700,048 | £700,048 | new | 1 |
| 2 (2) |  | Jaws 2 (1978) | £93,001 | £120,901 | £2,458,497 | -44% | 5 |
| 3 (1) |  | Superman (1978) | £92,379 | £124,712 | £13,068,705 | -60% | 7 |
| 4 (3) |  | Watership Down (1978) | £21,815 | £28,360 | £1,052,152 | -17% | 7 |
| 5 (4) | Piranha (1978) | £3,863 | £5,601 | £777,349 | -37% | 10 | |
| 6 (5) |  | Heaven Can Wait (1978) | £2,247 | £2,921 | £1,333,178 | -17% | 14 |