| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (new) |  | Darkest Hour (2018) | £4,058,356 | £4,058,356 | £4,058,356 | new | 1 |
| 2 (1) |  | Jumanji: Welcome to the Jungle (2017) | £2,435,626 | £3,639,624 | £29,912,422 | -37% | 4 |
| 3 (new) |  | Three Billboards Outside Ebbing, Missouri (2018) | £2,361,782 | £2,361,782 | £2,361,782 | new | 1 |
| 4 (3) |  | The Greatest Showman (2017) | £2,142,337 | £3,538,428 | £13,537,211 | -11% | 3 |
| 5 (new) |  | Insidious: The Last Key (2018) | £1,840,992 | £1,840,992 | £1,840,992 | new | 1 |
| 6 (2) |  | Star Wars: The Last Jedi (2017) | £1,717,106 | £3,143,076 | £79,867,006 | -52% | 5 |
| 7 (5) |  | Pitch Perfect 3 (2017) | £840,059 | £1,475,667 | £14,147,058 | -49% | 4 |
| 8 (6) |  | All the Money In the World (2018) | £539,706 | £1,255,528 | £2,417,003 | -54% | 2 |
| 9 (4) |  | Mollys Game (2018) | £522,456 | £1,094,812 | £3,378,232 | -77% | 2 |
| 10 (7) |  | Paddington 2 (2017) | £401,521 | £640,335 | £41,056,106 | -61% | 10 |
| 11 (8) |  | Ferdinand (2017) | £318,078 | £422,088 | £8,814,406 | -62% | 4 |
| 12 (new) |  | Eric Clapton: Life In 12 Bars (2018) | £183,051 | £183,051 | £183,051 | new | 1 |
| 13 (new) |  | Thalaivaa Time to Lead (2018) | £90,582 | £90,582 | £90,582 | new | 1 |
| 14 (9) |  | Hostiles (2018) | £83,837 | £390,032 | £770,750 | -78% | 2 |
| 15 (10) |  | Daddy's Home 2 (2017) | £68,850 | £117,761 | £14,296,957 | -67% | 8 |
| 16 (new) | | Gotowi Na Wszystko Exterminator (2018) | £35,099 | £35,099 | £35,099 | new | 1 |
| 17 (15) |  | Walk With Me (2017) | £12,431 | £37,487 | £82,735 | -73% | 2 |
| 18 (new) | | Mukkabaaz (2018) | £12,291 | £12,291 | £12,291 | new | 1 |
| 19 (16) |  | Murder On the Orient Express (2017) | £11,603 | £37,963 | £24,063,213 | -70% | 11 |
| 20 (new) |  | A Woman's Life (2016) | £11,556 | £11,556 | £11,556 | new | 1 |
| 21 (new) | | Sketch (2018) | £9,180 | £9,180 | £9,180 | new | 1 |
| 22 (19) |  | Film Stars Don't Die In Liverpool (2017) | £8,059 | £20,921 | £976,569 | -16% | 9 |
| 23 (new) | | Agnyaathavaasi (2018) | £5,255 | £5,255 | £5,255 | new | 1 |
| 24 (new) | | Ang Panday (2018) | £4,709 | £4,709 | £4,709 | new | 1 |
| 25 (22) |  | Loving Vincent (2017) | £3,706 | £10,707 | £962,783 | -39% | 14 |
| 26 (26) | | The Nutcracker: ROH London 2017/18 (2017) | £3,665 | £9,253 | £1,173,541 | 15% | 5 |
| 27 (18) |  | The Death of Stalin (2017) | £3,077 | £16,015 | £5,082,249 | -79% | 13 |
| 28 (new) | | Amazon Obhijaan (2018) | £2,519 | £2,519 | £2,519 | new | 1 |
| 29 (21) |  | Justice League (2017) | £2,416 | £5,664 | £17,425,892 | -69% | 9 |
| 30 (20) |  | Follies: NT Live 2017 (2017) | £2,393 | £10,043 | £1,208,474 | -71% | 8 |
| 31 (37) |  | The Killing of a Sacred Deer (2017) | £2,045 | £3,511 | £850,503 | 86% | 11 |
| 32 (new) |  | 1921 (2018) | £1,593 | £1,593 | £1,593 | new | 1 |
| 33 (re) |  | Youth (2017) | £1,579 | £1,579 | £58,196 | re | 4 |
| 34 (30) |  | The Party (2017) | £1,414 | £5,988 | £1,122,599 | -20% | 14 |
| 35 (40) |  | Breathe (2017) | £1,104 | £32,371 | £1,703,349 | 82% | 12 |
| 36 (28) |  | Victoria and Abdul (2017) | £648 | £1,698 | £10,105,320 | -70% | 18 |
| 37 (36) | | Gods Own Country (2017) | £626 | £1,897 | £868,140 | 44% | 20 |
| 38 (34) |  | Dunkirk (2017) | £570 | £570 | £56,659,341 | -21% | 24 |
| 39 (33) | | Blade of the Immortal (2017) | £552 | £1,020 | £97,092 | -65% | 6 |
| 40 (re) |  | Manifesto Live From Tate Modern (2017) | £308 | £308 | £37,325 | re | 4 |
| 41 (35) | | A Woman of No Importance 2017 (2017) | £101 | £3,327 | £305,294 | -72% | 4 |