| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (2) |  | Darkest Hour (2018) | £2,672,022 | £5,068,943 | £15,224,229 | -19% | 3 |
| 2 (1) |  | Coco (2018) | £2,315,450 | £2,956,186 | £8,165,400 | -56% | 2 |
| 3 (new) |  | Maze Runner: The Death Cure (2018) | £2,247,915 | £2,247,915 | £2,247,915 | new | 1 |
| 4 (4) |  | The Greatest Showman (2017) | £2,042,450 | £3,100,197 | £19,965,506 | -3% | 5 |
| 5 (new) |  | Early Man (2018) | £2,020,653 | £2,020,653 | £2,020,653 | new | 1 |
| 6 (3) |  | The Post (2018) | £1,604,133 | £3,056,879 | £5,209,856 | -25% | 2 |
| 7 (6) |  | Three Billboards Outside Ebbing, Missouri (2018) | £1,249,691 | £2,373,456 | £7,605,591 | -23% | 3 |
| 8 (5) |  | Jumanji: Welcome to the Jungle (2017) | £1,219,880 | £1,669,174 | £34,147,183 | -34% | 6 |
| 9 (new) |  | Downsizing (2018) | £1,131,687 | £1,131,687 | £1,131,687 | new | 1 |
| 10 (new) |  | Padmaavat (2018) | £850,386 | £850,386 | £850,386 | new | 1 |
| 11 (7) |  | The Commuter (2018) | £660,094 | £1,427,218 | £3,029,898 | -59% | 2 |
| 12 (8) |  | Insidious: The Last Key (2018) | £505,604 | £918,458 | £4,582,081 | -51% | 3 |
| 13 (new) |  | 12 Strong (2018) | £421,514 | £421,514 | £421,514 | new | 1 |
| 14 (new) | | Tosca: Met Opera 2018 (2018) | £404,993 | £404,993 | £404,993 | new | 1 |
| 15 (9) |  | Star Wars: The Last Jedi (2017) | £339,915 | £677,607 | £82,125,212 | -61% | 7 |