| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (new) |  | Incredibles 2 (2018) | £9,650,000 | £9,650,000 | £9,650,000 | new | 1 |
| 2 (new) |  | Skyscraper (2018) | £1,829,830 | £1,829,830 | £1,829,830 | new | 1 |
| 3 (2) |  | Jurassic World: Fallen Kingdom (2018) | £824,705 | £1,669,884 | £38,480,573 | -37% | 6 |
| 4 (1) |  | The First Purge (2018) | £798,455 | £1,589,789 | £3,367,946 | -55% | 2 |
| 5 (3) |  | Ocean's 8 (2018) | £529,697 | £1,201,969 | £9,731,255 | -37% | 4 |
| 6 (new) |  | The Secret of Marrowbone (2018) | £171,161 | £171,161 | £171,161 | new | 1 |
| 7 (4) |  | Sicario 2: Soldado (2018) | £131,078 | £376,168 | £1,838,626 | -59% | 3 |
| 8 (9) |  | Sanju (2018) | £96,329 | £212,265 | £1,150,401 | -56% | 3 |
| 9 (8) |  | Hereditary (2018) | £91,897 | £277,708 | £5,368,030 | -59% | 5 |
| 10 (6) |  | Adrift (2018) | £75,742 | £288,321 | £1,267,325 | -67% | 3 |
| 11 (5) |  | Tag (2018) | £75,419 | £282,565 | £1,346,420 | -70% | 3 |
| 12 (7) | | Patrick (2018) | £74,094 | £241,351 | £964,669 | -67% | 3 |
| 13 (new) |  | First Reformed (2018) | £73,233 | £73,233 | £73,233 | new | 1 |
| 14 (13) |  | Deadpool 2 (2018) | £67,155 | £163,184 | £32,501,893 | -49% | 9 |
| 15 (12) |  | Whitney (2018) | £44,968 | £180,596 | £323,532 | -69% | 2 |