| Title | Weekend | Week | Total | % Change | Total Weeks | ||
| 1 (new) | ![]() | Christopher Robin (2018) | £2,553,810 | £2,553,810 | £2,553,810 | new | 1 |
| 2 (2) | ![]() | Mamma Mia! Here We Go Again (2018) | £2,241,507 | £6,211,750 | £54,523,054 | -37% | 5 |
| 3 (1) | ![]() | The Meg (2018) | £2,113,490 | £4,910,665 | £8,561,776 | -42% | 2 |
| 4 (new) | ![]() | The Equalizer 2 (2018) | £1,980,754 | £1,980,754 | £1,980,754 | new | 1 |
| 5 (new) | ![]() | The Festival (2018) | £1,423,410 | £1,423,410 | £1,423,410 | new | 1 |
| 6 (3) | ![]() | Incredibles 2 (2018) | £1,359,602 | £3,572,450 | £48,579,752 | -42% | 6 |
| 7 (5) | ![]() | Mission:Impossible - Fallout (2018) | £1,174,345 | £2,646,593 | £20,102,327 | -42% | 4 |
| 8 (4) | ![]() | Ant-Man and the Wasp (2018) | £1,169,524 | £3,103,400 | £13,597,140 | -49% | 3 |
| 9 (new) | ![]() | William Shakespeares Romeo + Juliet (1997) Secret Cinema | £999,338 | £999,338 | £999,338 | re | 9 |
| 10 (6) | ![]() | Hotel Transylvania 3: Summer Vacation (2018) | £970,776 | £2,721,323 | £13,971,286 | -38% | 4 |
| 11 (new) | ![]() | Gold (2018) | £126,695 | £126,695 | £126,695 | new | 1 |
| 12 (8) | ![]() | Teen Titans Go! to The Movies (2018) | £102,957 | £381,658 | £1,394,775 | -58% | 3 |
| 13 (7) | ![]() | The Darkest Minds (2018) | £80,426 | £460,853 | £849,178 | -79% | 2 |
| 14 (9) | ![]() | Unfriended Dark Web (2018) | £76,157 | £275,100 | £498,210 | -66% | 2 |
| 15 (10) | ![]() | The First Purge (2018) | £55,500 | £127,933 | £5,904,674 | -53% | 7 |