| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (new) |  | Bohemian Rhapsody (2018) | £9,530,463 | £9,530,463 | £9,530,463 | new | 1 |
| 2 (1) |  | A Star Is Born (2018) | £2,150,987 | £4,363,877 | £19,238,711 | -25% | 4 |
| 3 (2) |  | Halloween (2018) | £1,678,162 | £3,198,231 | £5,854,328 | -37% | 2 |
| 4 (6) |  | Smallfoot (2018) | £1,577,531 | £3,358,392 | £7,691,245 | 10% | 3 |
| 5 (4) |  | Johnny English Strikes Again (2018) | £1,544,459 | £3,199,656 | £14,172,794 | -8% | 4 |
| 6 (3) |  | Goosebumps 2: Haunted Halloween (2018) | £1,377,680 | £2,798,964 | £4,918,129 | -35% | 2 |
| 7 (new) |  | The Hate U Give (2018) | £911,309 | £911,309 | £911,309 | new | 1 |
| 8 (5) |  | Venom (2018) | £855,826 | £1,799,793 | £18,452,016 | -45% | 4 |
| 9 (7) |  | First Man (2018) | £605,032 | £1,444,583 | £6,559,818 | -54% | 3 |
| 10 (new) | | La Fanciulla Del West: Met Opera 2018 (2018) | £186,620 | £186,620 | £186,620 | new | 1 |
| 11 (new) |  | Die Walküre: ROH London 2018 Opera (2018) | £185,066 | £185,066 | £185,066 | new | 1 |
| 12 (re) |  | Hotel Transylvania 3: Summer Vacation (2018) | £182,945 | £182,945 | £19,668,842 | RE | 12 |
| 13 (10) |  | The House With a Clock In Its Walls (2018) | £146,134 | £340,554 | £8,047,134 | -17% | 6 |
| 14 (11) |  | Night School (2018) | £108,619 | £216,179 | £4,412,036 | -38% | 5 |
| 15 (8) |  | Hunter Killer (2018) | £75,275 | £330,493 | £698,575 | -80% | 2 |