| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (1) |  | Black Panther (2018) | £3,736,954 | £5,822,211 | £35,362,230 | -46% | 3 |
| 2 (new) |  | Red Sparrow (2018) | £1,843,124 | £1,843,124 | £1,843,124 | new | 1 |
| 3 (2) |  | The Greatest Showman (2017) | £1,239,069 | £1,701,379 | £35,265,331 | -38% | 10 |
| 4 (new) |  | Game Night () | £1,094,478 | £1,094,478 | £1,094,478 | new | 1 |
| 5 (3) |  | Lady Bird (2017) | £926,935 | £1,390,032 | £2,623,540 | -25% | 2 |
| 6 (new) | | Kobiety Mafii (2018) | £570,540 | £570,540 | £570,540 | new | 1 |
| 7 (8) |  | Coco () | £556,898 | £638,596 | £17,264,765 | -27% | 7 |
| 8 (5) |  | I, Tonya () | £547,455 | £961,977 | £2,011,528 | -48% | 2 |
| 9 (6) |  | Finding Your Feet (2018) | £465,621 | £1,204,578 | £2,127,798 | -50% | 2 |
| 10 (7) |  | The Shape of Water () | £418,969 | £851,557 | £5,279,015 | -53% | 3 |
| 11 (9) |  | Early Man () | £409,402 | £456,989 | £10,082,573 | -27% | 6 |
| 12 (10) |  | Three Billboards Outside Ebbing, Missouri () | £403,099 | £673,539 | £13,130,280 | -22% | 8 |
| 13 (4) |  | Fifty Shades Freed (2018) | £346,818 | £817,049 | £17,012,631 | -71% | 4 |
| 14 (13) |  | Jumanji: Welcome to the Jungle () | £169,812 | £216,132 | £37,921,984 | -41% | 11 |
| 15 (11) |  | Darkest Hour (2018) | £162,077 | £364,002 | £23,166,906 | -55% | 8 |
| 16 (new) | | Monster Family (2018) | £126,235 | £126,235 | £126,235 | new | 1 |
| 17 (new) | | A Fantastic Woman (2018) | £98,445 | £98,445 | £98,445 | new | 1 |
| 18 (new) | | The Flames of Paris: Bolshoi 2018 (2018) | £74,391 | £74,391 | £74,391 | new | 1 |
| 19 (17) |  | Phantom Thread () | £34,600 | £86,812 | £2,470,075 | -45% | 5 |
| 20 (re) | | The Winter's Tale: ROH London 2017/18 (2018) | £25,135 | £25,135 | £396,902 | re | 1 |
| 21 (new) | | Pari () | £12,418 | £12,418 | £12,418 | new | 1 |
| 22 (22) |  | The Mercy (2018) | £11,308 | £42,258 | £779,449 | -65% | 4 |
| 23 (16) |  | Paddington 2 (2017) | £11,099 | £13,545 | £42,614,170 | -84% | 17 |
| 24 (new) | | The Nile Hilton Incident (2017) | £8,100 | £8,100 | £8,100 | new | 1 |
| 25 (27) |  | Cat On a Hot Tin Roof: NT Live 2018 () | £7,543 | £48,633 | £688,600 | -23% | 2 |
| 26 (25) |  | Journeys End () | £7,009 | £25,403 | £437,411 | -52% | 5 |
| 27 (18) | | Dark River () | £5,855 | £16,500 | £58,041 | -86% | 2 |
| 28 (38) |  | Dunkirk (2017) | £3,518 | £5,985 | £56,730,469 | 89% | 30 |
| 29 (34) |  | All the Money In the World () | £2,199 | £4,444 | £3,186,531 | 29% | 9 |
| 30 (new) | | Erase and Forget (2018) | £1,523 | £1,523 | £1,523 | new | 1 |
| 31 (29) |  | The Ice King () | £1,491 | £2,612 | £8,790 | -76% | 2 |
| 32 (39) |  | Murder On the Orient Express () | £1,291 | £32,566 | £24,182,736 | 80% | 16 |
| 33 (30) | | Twelfth Night: RSC Live 2018 (2018) | £1,232 | £4,644 | £610,589 | -58% | 3 |
| 34 (re) |  | Twelfth Night: NT Live 2017 (2017) | £846 | £846 | £818,209 | re | 7 |
| 35 (new) |  | Intel Extreme Masters Katowice 2018 (2018) | £824 | £824 | £824 | new | 1 |
| 36 (32) |  | Walk With Me () | £789 | £4,370 | £164,686 | -65% | 8 |
| 37 (24) |  | Star Wars: The Last Jedi () | £763 | £22,466 | £82,672,870 | -95% | 12 |
| 38 (re) |  | The Death of Stalin (2017) | £526 | £526 | £5,128,989 | re | 18 |
| 39 (26) |  | The Commuter (2018) | £506 | £4,853 | £3,949,316 | -95% | 7 |
| 40 (33) |  | Loving Vincent () | £403 | £1,739 | £1,009,927 | -75% | 20 |