UK Box Office 20th April, 1979
| Title | Weekend | Week | Total | % Change | Total Weeks | ||
| 1 (1) |  | Battlestar Galactica (1979) | £275,030 | £357,539 | £907,599 | -50% | 2 |
| 2 (2) |  | The Wiz (1978) | £126,075 | £176,505 | £761,493 | -38% | 3 |
| 3 (3) |  | Every Which Way But Loose (1979) | £15,703 | £22,769 | £3,760,783 | -50% | 8 |
| 4 (5) |  | National Lampoons Animal House (1979) | £4,920 | £6,642 | £2,015,574 | -52% | 8 |
| 5 (6) |  | Escape to Athena (1979) | £3,942 | £5,322 | £589,075 | -50% | 7 |