| 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 |
| 16 (10) |  | Nativity Rocks! (2018) | £27,195 | £252,537 | £2,956,400 | -91% | 6 |
| 17 (33) |  | Johnny English Strikes Again (2018) | £18,110 | £18,165 | £17,657,898 | 95% | 13 |
| 18 (27) |  | The King and I From the London Palladium (2018) | £15,212 | £38,309 | £1,425,713 | 86% | 5 |
| 19 (18) |  | Disobedience (2018) | £14,681 | £22,464 | £500,878 | 18% | 5 |
| 20 (16) |  | Widows (2018) | £13,429 | £31,405 | £6,247,941 | -42% | 8 |
| 21 (29) | | Antony and Cleopatra: NT Live 2018 (2018) | £5,492 | £5,989 | £567,666 | 64% | 2 |
| 22 (new) |  | Yolki 7 (2018) | £4,493 | £4,493 | £4,493 | new | 1 |
| 23 (30) |  | Allelujah: NT Live 2018 (2018) | £3,219 | £5,465 | £916,298 | 41% | 9 |
| 24 (35) |  | Mamma Mia! Here We Go Again (2018) | £2,576 | £4,639 | £65,588,324 | 74% | 24 |
| 25 (re) |  | They Shall Not Grow Old (2018) | £2,120 | £2,120 | £1,457,480 | RE | 10 |
| 26 (34) |  | Peterloo (2018) | £1,451 | £7,329 | £1,209,912 | 48% | 9 |
| 27 (20) |  | Robin Hood (2018) | £1,448 | £3,435 | £2,746,963 | -77% | 6 |
| 28 (re) | | Nureyev (2018) | £1,412 | £1,412 | £86,639 | RE | 14 |
| 29 (39) | | Nae Pasaran! (2018) | £988 | £988 | £87,555 | 52% | 9 |
| 30 (28) |  | Anna and the Apocalypse (2018) | £924 | £1,542 | £55,274 | -54% | 5 |
| 31 (21) | | The Nutcracker: ROH London 2018/19 (2018) | £816 | £7,796 | £1,161,729 | -83% | 3 |
| 32 (re) | | Back to Berlin (2018) | £602 | £602 | £7,985 | RE | 4 |
| 33 (26) |  | The Cbeebies Christmas Show: Thumbelina (2018) | £563 | £631 | £212,629 | -79% | 3 |
| 34 (25) |  | Tulip Fever (2017) | £551 | £2,991 | £122,257 | -80% | 4 |
| 35 (43) |  | Christopher Robin (2018) | £298 | £298 | £14,865,868 | 15% | 19 |
| 36 (38) | | Juliet, Naked (2018) | £202 | £518 | £142,849 | -61% | 9 |
| 37 (re) | | Await Further Instructions (2018) | £188 | £188 | £2,848 | RE | 3 |
| 38 (36) |  | The Wife (2018) | £173 | £1,426 | £1,691,256 | -74% | 14 |
| 39 (re) |  | Troilus and Cressida: RSC Live 2018 (2018) | £105 | £105 | £149,060 | RE | 6 |
| 40 (41) |  | Surviving Christmas With the Relatives (2018) | £94 | £-504 | £28,984 | -78% | 5 |
| 41 (re) |  | King of Thieves (2018) | £80 | £80 | £6,066,139 | RE | 14 |
| 42 (45) |  | Slaughterhouse Rulez (2018) | £53 | £-307 | £571,729 | -57% | 8 |