| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (new) |  | Ralph Breaks the Internet: Wreck-It Ralph 2 (2018) | £4,032,775 | £4,032,775 | £4,032,775 | new | 1 |
| 2 (new) |  | Creed II (2018) | £2,991,509 | £2,991,509 | £2,991,509 | new | 1 |
| 3 (1) |  | Fantastic Beasts: The Crimes of Grindelwald (2018) | £2,709,967 | £4,710,049 | £26,753,839 | -52% | 3 |
| 4 (2) |  | The Grinch (2018) | £2,317,766 | £2,922,940 | £17,002,535 | -29% | 4 |
| 5 (3) |  | Bohemian Rhapsody (2018) | £1,534,249 | £3,015,289 | £42,018,993 | -31% | 6 |
| 6 (new) |  | 2.0 (2018) | £533,229 | £533,229 | £533,229 | new | 1 |
| 7 (5) |  | Nativity Rocks! (2018) | £466,050 | £642,277 | £1,476,691 | -44% | 2 |
| 8 (4) |  | Robin Hood (2018) | £392,198 | £911,676 | £2,242,063 | -71% | 2 |
| 9 (7) |  | Widows (2018) | £221,496 | £525,239 | £5,792,170 | -52% | 4 |
| 10 (8) |  | A Star Is Born (2018) | £221,455 | £565,970 | £28,598,254 | -47% | 9 |
| 11 (9) |  | The Nutcracker and the Four Realms (2018) | £202,199 | £273,144 | £5,112,284 | -46% | 5 |
| 12 (new) |  | Disobedience (2018) | £193,907 | £193,907 | £193,907 | new | 1 |
| 13 (new) |  | Pokémon The Movie: The Power of Us (2018) | £177,750 | £177,750 | £177,750 | new | 1 |
| 14 (new) |  | The Possession of Hannah Grace (2018) | £113,537 | £113,537 | £113,537 | new | 1 |
| 15 (new) | | Plagi Breslau (2018) | £88,271 | £88,271 | £88,271 | new | 1 |
| 16 (new) | | Three Identical Strangers (2018) | £78,790 | £78,790 | £78,790 | new | 1 |
| 17 (new) | | Don Quixote: Bolshoi Ballet 2018 (2018) | £69,780 | £69,780 | £69,780 | new | 1 |
| 18 (new) |  | Anna and the Apocalypse (2018) | £32,336 | £32,336 | £32,336 | new | 1 |
| 19 (12) |  | Johnny English Strikes Again (2018) | £26,979 | £49,372 | £17,597,229 | -70% | 9 |
| 20 (re) |  | The King and I From the London Palladium (2018) | £24,286 | £24,286 | £1,064,460 | re | 1 |
| 21 (16) |  | Peterloo (2018) | £17,144 | £59,122 | £1,127,072 | -52% | 5 |
| 22 (new) |  | Surviving Christmas With the Relatives (2018) | £12,918 | £12,918 | £12,918 | new | 1 |
| 23 (new) | | The Wild Pear Tree (2018) | £12,869 | £12,869 | £12,869 | new | 1 |
| 24 (new) | | The Image Book (2018) | £10,804 | £10,804 | £10,804 | new | 1 |
| 25 (19) |  | Allelujah: NT Live 2018 (2018) | £8,790 | £34,005 | £868,691 | 3% | 5 |
| 26 (30) |  | The Wife (2018) | £5,383 | £17,969 | £1,678,075 | 63% | 10 |
| 27 (20) |  | They Shall Not Grow Old (2018) | £2,830 | £2,830 | £1,425,832 | -51% | 7 |
| 28 (24) | | Nae Pasaran! (2018) | £2,251 | £8,889 | £70,862 | -46% | 5 |
| 29 (25) |  | Cold War (2018) | £1,696 | £5,205 | £1,145,915 | -59% | 14 |
| 30 (re) | | King Lear: NT Live 2018 (2018) | £1,500 | £1,500 | £730,254 | re | 7 |
| 31 (27) | | Juliet, Naked (2018) | £1,341 | £4,498 | £128,081 | -48% | 5 |
| 32 (re) |  | King of Thieves (2018) | £1,240 | £1,240 | £6,039,555 | re | 11 |
| 33 (37) | | Becoming Animal (2018) | £1,069 | £1,069 | £2,274 | -4% | 3 |
| 34 (17) |  | Christopher Robin (2018) | £972 | £8,030 | £14,858,384 | -94% | 16 |
| 35 (43) |  | Troilus and Cressida: RSC Live 2018 (2018) | £954 | £1,744 | £146,993 | 50% | 3 |
| 36 (28) |  | Cliff Richard Live 60th Anniversary Tour (2018) | £923 | £923 | £1,223,566 | -62% | 8 |
| 37 (re) |  | Der Rosenkavalier: Glyndebourne 2014 (2014) | £874 | £874 | £116,073 | re | 4 |
| 38 (31) | | Nureyev (2018) | £827 | £5,180 | £83,097 | -57% | 11 |
| 39 (23) |  | Postcards From London (2018) | £809 | £1,460 | £6,012 | -82% | 2 |
| 40 (36) |  | Mamma Mia! Here We Go Again (2018) | £400 | £2,479 | £65,580,232 | -68% | 20 |
| 41 (re) |  | The Importance of Being Earnest 2018 (2018) | £385 | £385 | £358,823 | re | 3 |
| 42 (32) | | Back to Berlin (2018) | £322 | £1,744 | £3,437 | -81% | 2 |
| 43 (re) | | Sgt. Stubby: An Unlikely Hero (2018) | £109 | £109 | £138,275 | re | 15 |
| 44 (45) |  | Mission:Impossible - Fallout (2018) | £53 | £18,500 | £24,415,451 | -79% | 18 |