| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (1) |  | Peter Rabbit (2018) | £5,610,556 | £8,004,334 | £21,643,421 | 18% | 3 |
| 2 (new) |  | Ready Player One (2018) | £5,113,041 | £5,113,041 | £5,113,041 | new | 1 |
| 3 (new) |  | Isle of Dogs (2018) | £1,641,509 | £1,641,509 | £1,641,509 | new | 1 |
| 4 (new) |  | Blockers () | £1,349,627 | £1,349,627 | £1,349,627 | new | 1 |
| 5 (3) |  | Black Panther (2018) | £1,044,075 | £1,819,584 | £46,711,648 | -20% | 7 |
| 6 (5) |  | The Greatest Showman (2017) | £812,202 | £1,381,179 | £41,494,128 | 7% | 14 |
| 7 (2) |  | Pacific Rim Uprising (2018) | £655,858 | £1,505,679 | £3,160,865 | -60% | 2 |
| 8 (new) | | Duck Duck Goose () | £653,832 | £653,832 | £653,832 | new | 1 |
| 9 (4) |  | Tomb Raider (2018) | £570,156 | £1,254,076 | £6,726,617 | -52% | 3 |
| 10 (6) |  | A Wrinkle In Time (2018) | £387,917 | £806,893 | £1,462,435 | -41% | 2 |
| 11 (new) | | Cosi Fan Tutte: Met Opera 2018 (2018) | £261,409 | £261,409 | £261,409 | new | 1 |
| 12 (new) |  | Baaghi 2 (2018) | £167,625 | £167,625 | £167,625 | new | 1 |
| 13 (new) | | Midnight Sun () | £163,482 | £163,482 | £163,482 | new | 1 |
| 14 (10) |  | Game Night () | £140,703 | £366,815 | £4,633,708 | -52% | 5 |
| 15 (7) |  | Unsane (2018) | £137,490 | £511,642 | £990,093 | -71% | 2 |
| 16 (26) |  | Early Man () | £121,188 | £147,350 | £10,699,911 | 72% | 10 |
| 17 (9) |  | Red Sparrow (2018) | £112,337 | £303,271 | £6,210,720 | -62% | 5 |
| 18 (14) |  | Three Billboards Outside Ebbing, Missouri () | £86,792 | £194,853 | £14,888,380 | -40% | 12 |
| 19 (11) |  | Finding Your Feet (2018) | £64,984 | £331,968 | £5,322,745 | -61% | 6 |
| 20 (new) |  | Journeyman () | £60,249 | £60,249 | £60,249 | new | 1 |
| 21 (new) | | Cake () | £47,137 | £47,137 | £47,137 | new | 1 |
| 22 (16) |  | You Were Never Really Here () | £41,327 | £119,750 | £932,118 | -59% | 4 |
| 23 (19) |  | Mary Magdalene (2018) | £38,872 | £125,621 | £686,240 | -35% | 3 |
| 24 (23) |  | Darkest Hour (2018) | £22,896 | £66,787 | £23,925,110 | -46% | 12 |
| 25 (re) | | Bernstein Centenary: ROH London 2017/18 () | £20,425 | £20,425 | £375,750 | re | 1 |
| 26 (new) | | Wind In the Willows: The Musical () | £13,407 | £13,407 | £13,407 | new | 1 |
| 27 (22) |  | Westwood: Punk, Icon, Activist (2018) | £7,813 | £45,687 | £88,523 | -82% | 2 |
| 28 (re) | | Messiah From Bristol Old Vic 2018 () | £5,011 | £5,011 | £88,082 | re | 1 |
| 29 (28) |  | Phantom Thread () | £4,338 | £22,148 | £2,669,413 | -68% | 9 |
| 30 (30) | | Monster Family (2018) | £3,492 | £14,357 | £328,014 | -62% | 5 |
| 31 (re) | | Psycho Vertical (2018) | £2,523 | £2,523 | £4,788 | re | 2 |
| 32 (37) | | Walk Like a Panther () | £2,434 | £6,757 | £187,378 | 10% | 4 |
| 33 (35) |  | The Mercy (2018) | £2,358 | £12,445 | £856,113 | -1% | 8 |
| 34 (38) | | My Generation (2018) | £1,988 | £4,751 | £274,711 | 2% | 3 |
| 35 (41) | | Gholam () | £1,934 | £4,314 | £5,580 | 35% | 2 |
| 36 (re) | | Dark River () | £1,783 | £1,783 | £105,674 | re | 5 |
| 37 (33) | | Julius Caesar: NT Live 2018 () | £1,330 | £20,076 | £564,327 | -61% | 2 |
| 38 (new) |  | Rangasthalam () | £1,268 | £1,268 | £1,268 | new | 1 |
| 39 (34) |  | Journeys End () | £1,266 | £15,753 | £502,938 | -59% | 9 |
| 40 (25) |  | Exhibition On Screen: Van Gogh 2018 (2018) | £1,052 | £17,546 | £51,961 | -97% | 2 |
| 41 (40) |  | Paddington 2 (2017) | £799 | £3,015 | £42,631,678 | -41% | 21 |
| 42 (49) |  | Dunkirk (2017) | £474 | £739 | £56,757,848 | 97% | 34 |
| 43 (new) | | The Bachelors () | £440 | £440 | £440 | new | 1 |
| 44 (re) |  | Loving Vincent () | £404 | £404 | £1,015,255 | re | 23 |
| 45 (44) |  | Cat On a Hot Tin Roof: NT Live 2018 () | £392 | £5,569 | £740,846 | -39% | 6 |
| 46 (re) |  | Star Wars: The Last Jedi () | £231 | £231 | £82,676,198 | re | 15 |
| 47 (45) |  | The Ice King () | £21 | £1,048 | £14,085 | -96% | 6 |