| Title | Weekend | Week | Total | % Change | Total Weeks | ||
| 1 (2) | ![]() | Jurassic World: Fallen Kingdom () | £2,001,876 | £3,292,548 | £34,498,111 | -38% | 4 |
| 2 (1) | ![]() | Ocean's 8 () | £1,283,488 | £2,514,537 | £6,861,607 | -70% | 2 |
| 3 (new) | ![]() | Sicario 2: Soldado () | £698,466 | £698,466 | £698,466 | new | 1 |
| 4 (new) | ![]() | Tag () | £475,373 | £475,373 | £475,373 | new | 1 |
| 5 (new) | ![]() | Sanju (2018) | £448,659 | £448,659 | £448,659 | new | 1 |
| 6 (3) | ![]() | Hereditary () | £433,422 | £920,080 | £4,578,526 | -48% | 3 |
| 7 (new) | ![]() | Adrift () | £405,240 | £405,240 | £405,240 | new | 1 |
| 8 (new) | Patrick (2018) | £299,861 | £299,861 | £299,861 | new | 1 | |
| 9 (4) | ![]() | Deadpool 2 () | £241,659 | £523,902 | £32,049,598 | -47% | 7 |
| 10 (5) | ![]() | Solo: A Star Wars Story (2018) | £192,050 | £389,639 | £19,098,765 | -49% | 6 |
| 11 (7) | ![]() | Sherlock Gnomes () | £106,367 | £176,961 | £8,445,618 | -40% | 8 |
| 12 (10) | ![]() | Blade Runner (1982) Rerelease | £105,049 | £756,160 | £4,914,295 | -18% | 20 |
| 13 (6) | ![]() | Avengers: Infinity War () | £77,596 | £167,507 | £70,626,706 | -58% | 10 |
| 14 (9) | ![]() | The Happy Prince () | £66,063 | £222,224 | £540,264 | -56% | 3 |
| 15 (new) | ![]() | The Bookshop (2018) | £65,558 | £65,558 | £65,558 | new | 1 |
| 16 (new) | ![]() | Leave No Trace () | £50,445 | £50,445 | £50,445 | new | 1 |
| 17 (13) | McQueen () | £17,379 | £57,456 | £520,619 | -60% | 4 | |
| 18 (new) | The Endless (2018) | £16,817 | £16,817 | £16,817 | new | 1 | |
| 19 (new) | Time Trial (2018) | £13,760 | £13,760 | £13,760 | new | 1 | |
| 20 (new) | Zoo () | £12,516 | £12,516 | £12,516 | new | 1 | |
| 21 (17) | ![]() | Peter Rabbit (2018) | £12,271 | £36,874 | £40,951,752 | 5% | 16 |
| 22 (new) | Ryuichi Sakamoto Coda () | £11,373 | £11,373 | £11,373 | new | 1 | |
| 23 (re) | The Secret Spitfires (2017) | £9,650 | £9,650 | £34,601 | re | 5 | |
| 24 (new) | ![]() | Animal World () | £8,766 | £8,766 | £8,766 | new | 1 |
| 25 (20) | ![]() | On Chesil Beach () | £7,448 | £32,687 | £967,323 | -22% | 7 |
| 26 (27) | ![]() | The Guernsey Literary and Potato Peel Pie Society (2018) | £5,050 | £19,626 | £5,831,716 | 63% | 11 |
| 27 (21) | Edie (2018) | £4,323 | £39,569 | £410,674 | -41% | 6 | |
| 28 (new) | The Opera House (2017) | £3,904 | £3,904 | £3,904 | new | 1 | |
| 29 (23) | ![]() | 2001: A Space Odyssey () Rerelease | £3,330 | £3,330 | £408,499 | 37% | 35 |
| 30 (19) | Arcadia (2018) | £2,418 | £7,964 | £18,696 | -77% | 2 | |
| 31 (26) | ![]() | Isle of Dogs (2018) | £1,640 | £3,444 | £5,999,463 | -13% | 14 |
| 32 (33) | ![]() | Lean On Pete () | £1,145 | £1,921 | £383,676 | 40% | 9 |
| 33 (new) | ![]() | Habit () | £1,080 | £1,080 | £1,080 | new | 1 |
| 34 (38) | ![]() | Beast () | £719 | £1,972 | £416,000 | 32% | 9 |
| 35 (36) | An American In Paris: The Musical (2018) | £690 | £6,413 | £773,245 | 21% | 7 | |
| 36 (re) | ![]() | Macbeth: NT Live 2018 (2018) | £434 | £434 | £503,831 | re | 6 |
| 37 (37) | Stanley a Man of Variety (2018) | £403 | £4,109 | £5,396 | -18% | 3 | |
| 38 (re) | ![]() | Ready Player One (2018) | £217 | £217 | £16,115,569 | re | 12 |
| 39 (45) | ![]() | Early Man () | £150 | £1,335 | £11,199,990 | -5% | 23 |
| 40 (44) | ![]() | The Bromley Boys (2018) | £136 | £1,046 | £12,746 | -28% | 5 |
| 41 (42) | Mckellen Playing the Part Live 2018 () | £75 | £948 | £46,899 | -64% | 6 | |
| 42 (re) | Akram Khan's Giselle: ENB 2017 (2018) | £75 | £75 | £108,977 | re | 4 | |
| 43 (30) | Funny Cow () | £67 | £4,676 | £523,475 | -93% | 11 | |
| 44 (39) | ![]() | Tea With the Dames () | £62 | £3,251 | £194,111 | -85% | 8 |
| 45 (24) | That Good Night () | £33 | £4,966 | £58,223 | -98% | 7 | |