UK Box Office 19th May, 1978
| Title | Weekend | Week | Total | % Change | Total Weeks | ||
| 1 (1) |  | Pete's Dragon (1978) | £31,314 | £43,840 | £959,335 | 0% | 6 |
| 2 (2) |  | Close Encounters of the Third Kind (1978) | £18,887 | £24,553 | £12,641,582 | 0% | 10 |
| 3 (3) |  | The Stud (1978) | £8,250 | £11,550 | £1,259,543 | 0% | 6 |
| 4 (5) |  | Star Wars (1977) | £3,902 | £5,463 | £15,444,034 | 69% | 21 |
| 5 (4) |  | Saturday Night Fever (1978) | £3,656 | £5,118 | £3,189,111 | 0% | 9 |