| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (new) |  | Ant-Man and the Wasp (2018) | £4,988,747 | £4,988,747 | £4,988,747 | new | 1 |
| 2 (2) |  | Mamma Mia! Here We Go Again (2018) | £4,121,275 | £12,305,933 | £39,324,001 | -42% | 3 |
| 3 (1) |  | Mission:Impossible - Fallout (2018) | £2,471,073 | £6,057,527 | £13,357,630 | -66% | 2 |
| 4 (3) |  | Incredibles 2 (2018) | £2,391,917 | £6,652,739 | £39,869,498 | -54% | 4 |
| 5 (4) |  | Hotel Transylvania 3: Summer Vacation (2018) | £1,451,295 | £4,311,675 | £7,761,551 | -58% | 2 |
| 6 (new) |  | Teen Titans Go! to The Movies (2018) | £389,726 | £389,726 | £389,726 | new | 1 |
| 7 (8) |  | The First Purge (2018) | £172,871 | £405,783 | £5,507,600 | -38% | 5 |
| 8 (6) |  | Jurassic World: Fallen Kingdom (2018) | £166,187 | £479,524 | £40,979,530 | -52% | 9 |
| 9 (7) |  | Skyscraper (2018) | £118,809 | £402,785 | £5,126,110 | -64% | 4 |
| 10 (9) |  | Ocean's 8 (2018) | £58,824 | £169,726 | £10,923,384 | -53% | 7 |
| 11 (10) |  | Sherlock Gnomes (2018) | £43,209 | £144,563 | £9,161,985 | -56% | 13 |
| 12 (new) | | Fanney Khan (2018) | £36,639 | £36,639 | £36,639 | new | 1 |
| 13 (new) | | The Producers (1967) | £35,745 | £35,745 | £35,745 | new | 1 |
| 14 (5) |  | André Rieu's 2018 Maastricht Concert (2018) | £35,582 | £164,578 | £1,651,106 | -98% | 2 |
| 15 (12) |  | Apostasy (2018) | £30,912 | £80,121 | £146,123 | -53% | 2 |