UK Box Office 27th April, 2018
| Title | Weekend | Week | Total | % Change | Total Weeks | ||
| 1 (new) |  | Avengers: Infinity War (2018) | £29,379,496 | £29,379,496 | £29,379,496 | new | 1 |
| 2 (3) |  | The Guernsey Literary and Potato Peel Pie Society (2018) | £968,681 | £2,208,846 | £3,034,623 | 15% | 2 |
| 3 (2) |  | A Quiet Place (2018) | £920,235 | £1,608,408 | £9,871,073 | -10% | 4 |
| 4 (1) |  | Rampage (2018) | £735,856 | £1,333,133 | £7,816,910 | -48% | 3 |
| 5 (5) |  | Peter Rabbit (2018) | £585,713 | £742,031 | £39,634,873 | 17% | 7 |
| 6 (7) |  | The Greatest Showman (2017) | £300,947 | £527,332 | £45,974,245 | -1% | 18 |
| 7 (6) |  | Truth Or Dare (2018) | £246,426 | £474,244 | £2,193,619 | -39% | 3 |
| 8 (10) |  | Blade Runner (1982) Rerelease | £225,428 | £536,678 | £1,360,442 | -2% | 11 |
| 9 (new) | Cendrillon: Met Opera 2018 (2018) | £212,366 | £212,366 | £212,366 | new | 1 | |
| 10 (4) |  | Ready Player One (2018) | £203,129 | £445,041 | £15,884,060 | -60% | 5 |
| 11 (9) |  | Black Panther (2018) | £185,217 | £346,747 | £50,205,573 | -21% | 11 |
| 12 (new) |  | Beast (2018) | £166,295 | £166,295 | £166,295 | new | 1 |
| 13 (12) | Duck Duck Goose (2018) | £143,716 | £158,345 | £3,530,841 | 20% | 5 | |
| 14 (8) |  | Love, Simon (2018) | £143,540 | £275,060 | £3,540,552 | -48% | 4 |
| 15 (11) |  | Isle of Dogs (2018) | £120,808 | £236,122 | £5,735,046 | -24% | 5 |