| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (new) |  | Peter Rabbit (2018) | £7,273,207 | £7,273,207 | £7,273,207 | new | 1 |
| 2 (new) |  | Tomb Raider (2018) | £3,081,916 | £3,081,916 | £3,081,916 | new | 1 |
| 3 (1) |  | Black Panther (2018) | £1,881,691 | £2,949,122 | £42,779,145 | -36% | 5 |
| 4 (2) |  | The Greatest Showman (2017) | £1,059,983 | £1,567,303 | £38,904,203 | -32% | 12 |
| 5 (3) |  | Red Sparrow (2018) | £588,634 | £1,258,505 | £5,278,099 | -50% | 3 |
| 6 (4) |  | Game Night (2018) | £540,977 | £1,009,592 | £3,650,285 | -23% | 3 |
| 7 (5) |  | Lady Bird (2017) | £293,131 | £729,417 | £4,702,917 | -58% | 4 |
| 8 (7) |  | The Shape of Water (2018) | £289,641 | £628,832 | £6,978,097 | -48% | 5 |
| 9 (6) |  | Finding Your Feet (2018) | £285,202 | £890,323 | £4,437,675 | -50% | 4 |
| 10 (new) | | My Generation (2018) | £259,990 | £259,990 | £259,990 | new | 1 |
| 11 (new) |  | Mary Magdalene (2018) | £238,924 | £238,924 | £238,924 | new | 1 |
| 12 (new) | | The Square (2018) | £221,256 | £221,256 | £221,256 | new | 1 |
| 13 (10) |  | Three Billboards Outside Ebbing, Missouri (2018) | £212,226 | £483,484 | £14,387,369 | -41% | 10 |
| 14 (9) |  | I, Tonya (2017) | £205,446 | £466,807 | £3,293,715 | -50% | 4 |
| 15 (8) |  | Coco (2018) | £186,770 | £225,610 | £18,013,336 | -60% | 9 |
| 16 (12) |  | You Were Never Really Here (2018) | £144,731 | £317,610 | £605,954 | -50% | 2 |
| 17 (11) |  | Early Man (2018) | £84,825 | £100,492 | £10,503,095 | -71% | 8 |
| 18 (new) | | Raid (2018) | £83,414 | £83,414 | £83,414 | new | 1 |
| 19 (17) |  | Darkest Hour (2018) | £65,374 | £204,412 | £23,750,390 | -55% | 10 |
| 20 (new) | | Damo and Ivor: The Movie (2018) | £64,895 | £64,895 | £64,895 | new | 1 |
| 21 (18) | | Monster Family (2018) | £33,713 | £41,695 | £288,715 | -67% | 3 |
| 22 (26) |  | Phantom Thread (2018) | £15,505 | £68,688 | £2,611,458 | -42% | 7 |
| 23 (29) |  | The Mercy (2018) | £9,246 | £21,418 | £826,928 | 19% | 6 |
| 24 (19) | | Walk Like a Panther (2018) | £6,899 | £76,667 | £168,000 | -92% | 2 |
| 25 (33) | | Dark River (2018) | £2,753 | £6,546 | £78,515 | -45% | 4 |
| 26 (35) |  | All the Money In the World (2018) | £2,023 | £25,036 | £3,245,461 | -55% | 11 |
| 27 (31) |  | Journeys End (2018) | £1,648 | £15,510 | £477,251 | -70% | 7 |
| 28 (21) | | Carmen: ROH London 2017/18 (2018) | £1,639 | £17,440 | £697,861 | -97% | 2 |
| 29 (new) | | Psycho Vertical (2018) | £1,545 | £1,545 | £1,545 | new | 1 |
| 30 (re) |  | Twelfth Night: NT Live 2017 (2017) | £1,342 | £1,342 | £818,705 | re | 8 |
| 31 (38) |  | Paddington 2 (2017) | £1,300 | £6,708 | £42,625,401 | 5% | 19 |
| 32 (28) |  | Cat On a Hot Tin Roof: NT Live 2018 (2018) | £1,217 | £13,103 | £733,440 | -85% | 4 |
| 33 (44) |  | Loving Vincent (2017) | £1,113 | £1,212 | £1,012,987 | 73% | 22 |
| 34 (new) |  | Unless (2018) | £1,095 | £1,095 | £1,095 | new | 1 |
| 35 (40) |  | The Ice King (2018) | £1,033 | £1,579 | £12,171 | 22% | 4 |
| 36 (new) | | Gook (2018) | £1,012 | £1,012 | £1,012 | new | 1 |
| 37 (new) | | My Golden Days (2015) | £981 | £981 | £981 | new | 1 |
| 38 (new) | | Raja Abroadiya (2018) | £682 | £682 | £682 | new | 1 |
| 39 (27) |  | Dunkirk (2017) | £599 | £3,613 | £56,756,784 | -97% | 32 |
| 40 (new) | | Shikkari Shambu (2018) | £585 | £585 | £585 | new | 1 |
| 41 (43) |  | The Commuter (2018) | £394 | £1,354 | £3,952,127 | -6% | 9 |
| 42 (45) |  | Star Wars: The Last Jedi (2017) | £186 | £660 | £82,675,627 | 82% | 14 |