| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (1) |  | Mary Poppins Returns (2018) | £7,441,687 | £15,062,368 | £23,243,909 | -9% | 2 |
| 2 (new) |  | Bumblebee (2018) | £5,103,382 | £5,103,382 | £5,103,382 | new | 1 |
| 3 (2) |  | Aquaman (2018) | £2,445,108 | £4,296,543 | £14,353,312 | 3% | 3 |
| 4 (new) |  | Holmes and Watson (2018) | £1,418,030 | £1,418,030 | £1,418,030 | new | 1 |
| 5 (4) |  | Ralph Breaks the Internet: Wreck-It Ralph 2 (2018) | £1,269,357 | £2,201,258 | £13,266,916 | 17% | 5 |
| 6 (5) |  | Spider-Man: Into the Spider-Verse (2018) | £1,015,505 | £1,765,847 | £5,878,855 | 2% | 3 |
| 7 (3) |  | The Grinch (2018) | £753,537 | £3,950,795 | £26,624,487 | -60% | 8 |
| 8 (8) |  | Bohemian Rhapsody (2018) | £656,641 | £1,032,832 | £47,178,811 | 37% | 10 |
| 9 (6) |  | Fantastic Beasts: The Crimes of Grindelwald (2018) | £551,938 | £1,011,123 | £32,661,577 | 4% | 7 |
| 10 (7) |  | Creed II (2018) | £411,795 | £718,294 | £9,090,207 | -9% | 5 |
| 11 (new) | | Simmba (2018) | £267,952 | £267,952 | £267,952 | new | 1 |
| 12 (15) |  | Free Solo (2018) | £163,915 | £229,268 | £830,326 | 47% | 3 |
| 13 (9) | | Zero (2018) | £85,979 | £319,842 | £651,637 | -74% | 2 |
| 14 (re) |  | A Star Is Born (2018) | £83,371 | £83,371 | £29,299,129 | RE | 11 |
| 15 (14) |  | Smallfoot (2018) | £73,470 | £137,519 | £11,250,608 | -18% | 9 |