UK Box Office 19th January, 1979
| Title | Weekend | Week | Total | % Change | Total Weeks | ||
| 1 (1) |  | Superman (1978) | £230,947 | £300,231 | £12,943,993 | -33% | 6 |
| 2 (2) |  | Jaws 2 (1978) | £167,402 | £234,363 | £2,337,596 | -44% | 4 |
| 3 (3) |  | Watership Down (1978) | £26,178 | £34,031 | £1,023,792 | -38% | 6 |
| 4 (4) | Piranha (1978) | £6,180 | £8,343 | £771,748 | -17% | 9 | |
| 5 (5) |  | Heaven Can Wait (1978) | £2,696 | £3,640 | £1,330,257 | -52% | 13 |