| Title | Weekend | Week | Total | % Change | Total Weeks | ||
| 1 (new) | ![]() | The Predator (2018) | £2,394,163 | £2,394,163 | £2,394,163 | new | 1 |
| 2 (1) | ![]() | The Nun (2018) | £1,832,874 | £3,565,376 | £7,663,574 | -55% | 2 |
| 3 (new) | ![]() | Crazy Rich Asians (2018) | £1,599,858 | £1,599,858 | £1,599,858 | new | 1 |
| 4 (new) | ![]() | King of Thieves (2018) | £1,535,876 | £1,535,876 | £1,535,876 | new | 1 |
| 5 (2) | ![]() | Christopher Robin (2018) | £521,842 | £809,493 | £13,178,608 | -41% | 5 |
| 6 (4) | ![]() | Mamma Mia! Here We Go Again (2018) | £487,441 | £985,190 | £64,217,503 | -33% | 9 |
| 7 (3) | ![]() | BlackKKlansman (2018) | £420,883 | £882,212 | £5,414,304 | -47% | 4 |
| 8 (6) | ![]() | Incredibles 2 (2018) | £345,907 | £457,556 | £54,850,305 | -43% | 10 |
| 9 (8) | ![]() | Hotel Transylvania 3: Summer Vacation (2018) | £258,143 | £295,721 | £18,559,767 | -40% | 8 |
| 10 (5) | ![]() | The Meg (2018) | £250,160 | £454,786 | £15,530,578 | -59% | 6 |
| 11 (10) | Black '47 (2018) | £211,809 | £403,978 | £802,792 | -47% | 2 | |
| 12 (11) | ![]() | Mission:Impossible - Fallout (2018) | £143,458 | £302,625 | £24,040,970 | -63% | 8 |
| 13 (9) | ![]() | The Equalizer 2 (2018) | £141,543 | £364,080 | £7,247,966 | -65% | 5 |
| 14 (7) | ![]() | Searching (2018) | £132,187 | £357,078 | £2,023,281 | -70% | 3 |
| 15 (12) | ![]() | Ant-Man and the Wasp (2018) | £132,157 | £245,729 | £17,599,289 | -63% | 7 |
| 16 (16) | ![]() | Cold War (2018) | £108,236 | £215,445 | £748,089 | -28% | 3 |
| 17 (14) | ![]() | The Children Act (2018) | £95,183 | £372,175 | £2,411,179 | -68% | 4 |
| 18 (15) | ![]() | Yardie (2018) | £68,813 | £173,697 | £1,021,789 | -65% | 3 |
| 19 (new) | Husband Material (2018) | £62,739 | £62,739 | £62,739 | new | 1 | |
| 20 (new) | ![]() | Seema Raja (2018) | £42,803 | £42,803 | £42,803 | new | 1 |
| 21 (new) | The Rider (2018) | £36,253 | £36,253 | £36,253 | new | 1 | |
| 22 (new) | Lucky (2018) | £35,934 | £35,934 | £35,934 | new | 1 | |
| 23 (29) | ![]() | Sherlock Gnomes (2018) | £27,764 | £27,926 | £9,432,107 | 87% | 19 |
| 24 (18) | ![]() | The Festival (2018) | £23,653 | £76,622 | £3,414,189 | -78% | 5 |
| 25 (new) | ![]() | Wajib (2018) | £7,491 | £7,491 | £7,491 | new | 1 |
| 26 (31) | The Escape (2018) | £5,655 | £11,889 | £151,139 | 53% | 7 | |
| 27 (new) | Kurmaiyan (2018) | £5,188 | £5,188 | £5,188 | new | 1 | |
| 28 (25) | ![]() | Jurassic World: Fallen Kingdom (2018) | £4,952 | £11,667 | £41,585,159 | -46% | 15 |
| 29 (new) | ![]() | Reinventing Marvin (2018) | £2,560 | £2,560 | £2,560 | new | 1 |
| 30 (32) | Swimming With Men (2018) | £2,515 | £21,973 | £452,143 | 9% | 11 | |
| 31 (28) | ![]() | Thomas & Friends: Big World Big Adventures: The Movie (2018) | £2,511 | £3,211 | £492,174 | -47% | 9 |
| 32 (37) | ![]() | Spitfire (2018) | £1,846 | £3,897 | £262,072 | 40% | 9 |
| 33 (30) | Sgt. Stubby: An Unlikely Hero (2018) | £1,818 | £1,965 | £111,693 | -39% | 6 | |
| 34 (19) | Hurricane (2018) | £1,724 | £38,349 | £100,808 | -97% | 2 | |
| 35 (re) | ![]() | Jonas Kaufmann Under the Stars (2018) | £1,712 | £1,712 | £170,331 | re | 2 |
| 36 (new) | ![]() | Escobar (2018) | £1,561 | £1,561 | £1,561 | new | 1 |
| 37 (re) | ![]() | The Merry Wives of Windsor: RSC Live 2018 (2018) | £1,239 | £1,239 | £320,284 | re | 1 |
| 38 (27) | Under the Wire (2018) | £1,201 | £4,520 | £12,309 | -85% | 2 | |
| 39 (36) | ![]() | Everybody's Talking About Jamie (2018) | £881 | £4,529 | £720,248 | -32% | 9 |
| 40 (35) | ![]() | Apostasy (2018) | £833 | £2,521 | £325,761 | -46% | 8 |
| 41 (re) | An American In Paris: The Musical (2018) | £814 | £814 | £800,843 | re | 12 | |
| 42 (38) | Patrick (2018) | £652 | £2,513 | £1,209,043 | -34% | 12 | |
| 43 (45) | Ocean's Our Blue Planet (2018) | £478 | £583 | £912 | 31% | 2 | |
| 44 (34) | The More You Ignore Me (2018) | £437 | £3,252 | £63,321 | -77% | 11 | |
| 45 (re) | ![]() | Leaning Into the Wind - Andy Goldsworthy (2018) | £414 | £414 | £35,410 | re | 5 |
| 46 (re) | Painting the Modern Garden - Monet to Matisse (2016) | £378 | £378 | £198,917 | re | 5 | |
| 47 (41) | Pin Cushion (2018) | £366 | £946 | £53,017 | -43% | 8 | |
| 48 (re) | McQueen (2018) | £314 | £314 | £663,828 | re | 14 | |
| 49 (50) | ![]() | Whitney (2018) | £306 | £1,115 | £455,210 | 86% | 11 |
| 50 (24) | ![]() | Final Score (2018) | £292 | £5,840 | £15,785 | -97% | 2 |
| 51 (49) | ![]() | The Guernsey Literary and Potato Peel Pie Society (2018) | £248 | £27,715 | £5,930,953 | 53% | 20 |
| 52 (47) | The Eyes of Orson Welles (2018) | £204 | £698 | £33,492 | 1% | 5 | |
| 53 (re) | ![]() | Mary Shelley (2018) | £168 | £168 | £140,632 | re | 9 |
| 54 (46) | The Man From Mowax (2018) | £159 | £1,419 | £19,086 | -43% | 3 | |
| 55 (42) | ![]() | Peter Rabbit (2018) | £69 | £-11 | £41,074,056 | -88% | 27 |
| 56 (51) | A Prayer Before Dawn (2018) | £38 | £100 | £87,166 | 79% | 9 | |
| 57 (48) | ![]() | The Beatles: Yellow Submarine (1968) 50th Anniversary | £24 | £24 | £215,016 | -86% | 11 |