| Title | Weekend | Week | Total | % Change | Total Weeks | ||
| 1 (new) | ![]() | The Meg (2018) | £3,651,111 | £3,651,111 | £3,651,111 | new | 1 |
| 2 (2) | ![]() | Mamma Mia! Here We Go Again (2018) | £3,568,169 | £8,987,303 | £48,311,304 | -13% | 4 |
| 3 (4) | ![]() | Incredibles 2 (2018) | £2,354,530 | £5,137,804 | £45,007,302 | -2% | 5 |
| 4 (1) | ![]() | Ant-Man and the Wasp (2018) | £2,282,343 | £5,504,993 | £10,493,740 | -54% | 2 |
| 5 (3) | ![]() | Mission:Impossible - Fallout (2018) | £2,042,327 | £4,098,104 | £17,455,734 | -17% | 3 |
| 6 (5) | ![]() | Hotel Transylvania 3: Summer Vacation (2018) | £1,565,618 | £3,488,412 | £11,249,963 | 7% | 3 |
| 7 (new) | ![]() | The Darkest Minds (2018) | £388,325 | £388,325 | £388,325 | new | 1 |
| 8 (6) | ![]() | Teen Titans Go! to The Movies (2018) | £246,390 | £623,391 | £1,013,117 | -37% | 2 |
| 9 (new) | ![]() | Unfriended Dark Web (2018) | £223,110 | £223,110 | £223,110 | new | 1 |
| 10 (7) | ![]() | The First Purge (2018) | £117,451 | £269,141 | £5,776,741 | -32% | 6 |
| 11 (8) | ![]() | Jurassic World: Fallen Kingdom (2018) | £102,957 | £301,697 | £41,281,227 | -38% | 10 |
| 12 (new) | Vishwaroopam 2 (2018) | £61,771 | £61,771 | £61,771 | new | 1 | |
| 13 (new) | Dog Days (2018) | £59,223 | £59,223 | £59,223 | new | 1 | |
| 14 (10) | ![]() | Ocean's 8 (2018) | £47,159 | £105,665 | £11,029,049 | -20% | 8 |
| 15 (new) | ![]() | Heathers (1989) 30th Anniversary | £43,462 | £43,462 | £43,462 | re | 9 |