| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (new) |  | Venom (2018) | £8,031,342 | £8,031,342 | £8,031,342 | new | 1 |
| 2 (new) |  | Johnny English Strikes Again (2018) | £4,117,692 | £4,117,692 | £4,117,692 | new | 1 |
| 3 (new) |  | A Star Is Born (2018) | £4,100,196 | £4,100,196 | £4,100,196 | new | 1 |
| 4 (2) |  | The House With a Clock In Its Walls (2018) | £902,203 | £1,285,599 | £6,806,751 | -42% | 3 |
| 5 (1) |  | Night School (2018) | £860,262 | £1,526,541 | £3,122,918 | -46% | 2 |
| 6 (3) |  | A Simple Favour (2018) | £484,975 | £1,068,043 | £4,475,268 | -52% | 3 |
| 7 (new) |  | Aida: Met Opera 2018 (2018) | £302,178 | £302,178 | £302,178 | new | 1 |
| 8 (4) |  | Crazy Rich Asians (2018) | £281,478 | £583,859 | £5,403,572 | -62% | 4 |
| 9 (5) |  | The Nun (2018) | £243,153 | £502,180 | £11,099,719 | -63% | 5 |
| 10 (7) |  | The Wife (2018) | £228,950 | £531,388 | £924,023 | -42% | 2 |
| 11 (11) |  | Incredibles 2 (2018) | £219,928 | £239,469 | £55,764,462 | -8% | 13 |
| 12 (6) |  | King of Thieves (2018) | £197,079 | £602,970 | £5,579,610 | -68% | 4 |
| 13 (12) |  | Hotel Transylvania 3: Summer Vacation (2018) | £156,631 | £170,412 | £19,286,607 | -24% | 11 |
| 14 (9) |  | Christopher Robin (2018) | £148,412 | £191,447 | £14,417,406 | -50% | 8 |
| 15 (new) | | The Winter's Tale Live From Shakespeares Globe (2018) | £113,089 | £113,089 | £113,089 | new | 1 |