| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (new) |  | Night School () | £1,596,377 | £1,596,377 | £1,596,377 | new | 1 |
| 2 (1) |  | The House With a Clock In Its Walls () | £1,547,626 | £2,150,561 | £5,521,152 | -54% | 2 |
| 3 (2) |  | A Simple Favour () | £1,001,620 | £1,785,325 | £3,407,225 | -38% | 2 |
| 4 (4) |  | Crazy Rich Asians () | £731,157 | £1,244,144 | £4,819,713 | -36% | 3 |
| 5 (5) |  | The Nun () | £659,153 | £1,099,938 | £10,597,539 | -35% | 4 |
| 6 (3) |  | King of Thieves (2018) | £619,529 | £1,239,264 | £4,976,640 | -60% | 3 |
| 7 (new) |  | The Wife () | £392,635 | £392,635 | £392,635 | new | 1 |
| 8 (7) |  | The Predator (2018) | £334,322 | £683,219 | £4,569,791 | -51% | 3 |
| 9 (8) |  | Christopher Robin () | £299,288 | £388,575 | £14,225,959 | -38% | 7 |
| 10 (6) |  | Mile 22 () | £287,226 | £624,980 | £1,420,868 | -64% | 2 |
| 11 (9) |  | Incredibles 2 () | £238,885 | £270,917 | £55,524,993 | -31% | 12 |
| 12 (12) |  | Hotel Transylvania 3: Summer Vacation () | £206,742 | £222,724 | £19,116,195 | -20% | 10 |
| 13 (10) |  | Mamma Mia! Here We Go Again () | £182,377 | £349,672 | £65,222,094 | -44% | 11 |
| 14 (13) |  | BlackKKlansman () | £158,417 | £292,894 | £6,201,281 | -34% | 6 |
| 15 (14) | | Black '47 () | £139,659 | £241,988 | £1,344,288 | -12% | 4 |
| 16 (new) | | Sui Dhaaga Made In India () | £114,644 | £114,644 | £114,644 | new | 1 |
| 17 (11) |  | The Little Stranger () | £108,249 | £294,866 | £594,955 | -64% | 2 |
| 18 (new) | | Chekka Chivantha Vaanam (2018) | £93,908 | £93,908 | £93,908 | new | 1 |
| 19 (15) | | The Intent 2: The Come Up (2018) | £89,573 | £167,939 | £317,330 | -40% | 2 |
| 20 (new) | | Juliusz (2018) | £69,403 | £69,403 | £69,403 | new | 1 |
| 21 (16) |  | Mission:Impossible - Fallout () | £69,217 | £107,715 | £24,320,585 | -29% | 10 |
| 22 (new) |  | Soft Cell: One Final Time - Live Concert From London (2018) | £66,078 | £66,078 | £66,078 | new | 1 |
| 23 (17) |  | Cold War () | £38,287 | £76,201 | £970,861 | -46% | 5 |
| 24 (20) |  | The Children Act () | £34,304 | £100,833 | £2,677,330 | -29% | 6 |
| 25 (new) | | Parahuna () | £21,513 | £21,513 | £21,513 | new | 1 |
| 26 (22) | | Matangi / Maya / M.I.A. () | £20,118 | £46,500 | £89,630 | -53% | 2 |
| 27 (new) | | Skate Kitchen () | £19,545 | £19,545 | £19,545 | new | 1 |
| 28 (25) |  | Yardie (2018) | £18,131 | £35,670 | £1,122,430 | -38% | 5 |
| 29 (new) | | Devadas (2018) | £13,254 | £13,254 | £13,254 | new | 1 |
| 30 (27) | | Nureyev (2018) | £6,380 | £40,234 | £47,062 | -7% | 2 |
| 31 (new) | | Pataakha (2018) | £5,913 | £5,913 | £5,913 | new | 1 |
| 32 (new) | | Redcon 1 () | £5,714 | £5,714 | £5,714 | new | 1 |
| 33 (new) | | Sarkari Hiriya Prathamika Shaale (2018) | £4,993 | £4,993 | £4,993 | new | 1 |
| 34 (26) |  | Sherlock Gnomes () | £4,668 | £-25,989 | £9,449,197 | -62% | 21 |
| 35 (new) | | The Meeting () | £4,294 | £4,294 | £4,294 | new | 1 |
| 36 (new) | | Two For Joy (2018) | £3,371 | £3,371 | £3,371 | new | 1 |
| 37 (30) | | Hurricane () | £3,363 | £4,310 | £113,708 | -24% | 4 |
| 38 (re) | | King Lear: NT Live 2018 () | £3,287 | £3,287 | £604,413 | re | 1 |
| 39 (37) | | Sgt. Stubby: An Unlikely Hero () | £2,875 | £3,235 | £116,147 | 58% | 8 |
| 40 (31) |  | Spitfire () | £2,402 | £5,785 | £276,193 | -41% | 11 |
| 41 (28) |  | The Festival () | £1,956 | £4,313 | £3,436,954 | -63% | 7 |
| 42 (re) |  | Guardians of the Galaxy (2014) | £1,804 | £1,804 | £29,350,774 | re | 23 |
| 43 (re) | | The Gospel According to Andre () | £1,749 | £1,749 | £2,278 | re | 1 |
| 44 (35) |  | The Merry Wives of Windsor: RSC Live 2018 (2018) | £1,639 | £5,439 | £330,537 | -4% | 3 |
| 45 (46) |  | Whitney (2018) | £1,474 | £2,594 | £459,725 | 67% | 13 |
| 46 (41) | | Swimming With Men (2018) | £1,463 | £4,144 | £458,541 | 42% | 13 |
| 47 (new) | | Anchor and Hope (2018) | £1,425 | £1,425 | £1,425 | new | 1 |
| 48 (re) |  | Everybody's Talking About Jamie () | £1,372 | £1,372 | £725,068 | re | 10 |
| 49 (re) |  | Avengers: Age of Ultron (2015) | £1,156 | £1,156 | £48,335,413 | re | 18 |
| 50 (47) | | The More You Ignore Me () | £980 | £1,805 | £67,199 | 57% | 13 |
| 51 (new) | | Hello Mrs. Money () | £979 | £979 | £979 | new | 1 |
| 52 (33) | | Where Do We Go From Here?? () | £948 | £2,803 | £5,549 | -65% | 2 |
| 53 (42) | | Patrick (2018) | £791 | £1,344 | £1,211,448 | -4% | 14 |
| 54 (29) |  | Thomas & Friends: Big World Big Adventures: The Movie () | £778 | £1,184 | £498,240 | -83% | 11 |
| 55 (40) | | Julie: NT Live 2018 () | £683 | £6,484 | £230,762 | -34% | 3 |
| 56 (54) |  | The Happy Prince () | £670 | £6,698 | £865,478 | 86% | 14 |
| 57 (new) |  | Fat Buddies () | £629 | £629 | £629 | new | 1 |
| 58 (re) |  | Thor: The Dark World () | £628 | £628 | £20,128,907 | re | 14 |
| 59 (45) |  | Leaning Into the Wind - Andy Goldsworthy (2018) | £546 | £650 | £37,991 | -3% | 7 |
| 60 (43) | | Ocean's Our Blue Planet () | £424 | £542 | £2,370 | -47% | 4 |
| 61 (52) |  | Jurassic World: Fallen Kingdom () | £281 | £354 | £41,587,646 | 11% | 17 |
| 62 (re) |  | Jonas Kaufmann Under the Stars (2018) | £195 | £195 | £171,268 | re | 3 |
| 63 (re) | | The Man From Mowax () | £107 | £107 | £19,387 | re | 4 |
| 64 (48) |  | Peter Rabbit (2018) | £97 | £127 | £41,074,608 | -77% | 29 |
| 65 (50) | | The Eyes of Orson Welles () | £93 | £203 | £34,426 | -76% | 7 |
| 66 (39) | | The Escape (2018) | £91 | £2,898 | £163,018 | -91% | 9 |
| 67 (51) |  | Apostasy () | £90 | £171 | £330,182 | -75% | 10 |