| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (new) |  | Mission:Impossible - Fallout (2018) | £7,300,103 | £7,300,103 | £7,300,103 | new | 1 |
| 2 (1) |  | Mamma Mia! Here We Go Again (2018) | £7,104,808 | £17,282,138 | £27,018,068 | -27% | 2 |
| 3 (2) |  | Incredibles 2 (2018) | £5,146,128 | £10,792,677 | £33,216,759 | -24% | 3 |
| 4 (new) |  | Hotel Transylvania 3: Summer Vacation (2018) | £3,449,876 | £3,449,876 | £3,449,876 | new | 1 |
| 5 (new) |  | André Rieu's 2018 Maastricht Concert (2018) | £1,486,528 | £1,486,528 | £1,486,528 | new | 1 |
| 6 (4) |  | Jurassic World: Fallen Kingdom (2018) | £344,993 | £817,859 | £40,500,006 | -44% | 8 |
| 7 (3) |  | Skyscraper (2018) | £329,232 | £909,941 | £4,723,325 | -63% | 3 |
| 8 (5) |  | The First Purge (2018) | £279,751 | £601,709 | £5,101,817 | -45% | 4 |
| 9 (7) |  | Ocean's 8 (2018) | £125,664 | £287,893 | £10,753,658 | -54% | 6 |
| 10 (11) |  | Sherlock Gnomes (2018) | £98,493 | £212,923 | £9,017,422 | 25% | 12 |
| 11 (9) |  | Thomas & Friends: Big World Big Adventures: The Movie (2018) | £78,360 | £170,966 | £296,047 | -37% | 2 |
| 12 (new) |  | Apostasy (2018) | £66,002 | £66,002 | £66,002 | new | 1 |
| 13 (6) |  | Hotel Artemis (2018) | £65,264 | £267,190 | £624,451 | -82% | 2 |
| 14 (re) |  | Show Dogs (2018) | £46,413 | £46,413 | £3,274,525 | re | 6 |
| 15 (10) | | Dhadak (2018) | £40,945 | £109,053 | £220,994 | -63% | 2 |