| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (new) |  | Coco (2018) | £5,209,214 | £5,209,214 | £5,209,214 | new | 1 |
| 2 (1) |  | Darkest Hour (2018) | £3,295,716 | £6,096,930 | £10,155,286 | -19% | 2 |
| 3 (new) |  | The Post (2018) | £2,152,977 | £2,152,977 | £2,152,977 | new | 1 |
| 4 (4) |  | The Greatest Showman (2017) | £2,103,605 | £3,328,098 | £16,865,309 | -2% | 4 |
| 5 (2) |  | Jumanji: Welcome to the Jungle (2017) | £1,840,248 | £2,565,587 | £32,478,009 | -24% | 5 |
| 6 (3) |  | Three Billboards Outside Ebbing, Missouri (2018) | £1,621,878 | £2,870,353 | £5,232,135 | -31% | 2 |
| 7 (new) |  | The Commuter (2018) | £1,602,680 | £1,602,680 | £1,602,680 | new | 1 |
| 8 (5) |  | Insidious: The Last Key (2018) | £1,025,740 | £1,822,631 | £3,663,623 | -44% | 2 |
| 9 (6) |  | Star Wars: The Last Jedi (2017) | £861,320 | £1,580,599 | £81,447,605 | -50% | 6 |
| 10 (7) |  | Pitch Perfect 3 (2017) | £374,386 | £736,160 | £14,883,218 | -55% | 5 |
| 11 (10) |  | Paddington 2 (2017) | £271,836 | £350,497 | £41,406,603 | -32% | 11 |
| 12 (11) |  | Ferdinand (2017) | £220,385 | £260,704 | £9,075,110 | -31% | 5 |
| 13 (8) |  | All the Money In the World (2018) | £182,087 | £493,433 | £2,910,436 | -66% | 3 |
| 14 (new) |  | Romeo and Juliet: Bolshoi 2018 (2018) | £181,834 | £181,834 | £181,834 | new | 1 |
| 15 (9) |  | Mollys Game (2018) | £130,670 | £409,799 | £3,788,031 | -75% | 3 |