UK Weekend Box Office
UK Box Office 31st March, 1978
| Title | Weekend | Week | Total | % Change | Total Weeks | ||
| 1 (2) |  | Saturday Night Fever (1978) | £911,900 | £1,185,470 | £2,191,651 | -9% | 2 |
| 2 (1) |  | Close Encounters of the Third Kind (1978) | £539,421 | £728,218 | £11,515,144 | -49% | 3 |
| 3 (3) |  | Star Wars (1977) | £59,827 | £77,775 | £13,385,912 | -93% | 14 |
| 4 (4) |  | What's Up Superdoc! (1978) | £25,131 | £35,183 | £100,523 | -62% | 2 |
| 5 (5) |  | Abba: The Movie (1978) | £14,056 | £18,976 | £1,295,472 | -44% | 7 |
| 6 (6) |  | Tomorrow Never Comes (1978) | £8,268 | £11,162 | £263,349 | -47% | 5 |