| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (1) |  | A Star Is Born (2018) | £2,883,000 | £5,279,164 | £14,874,834 | -6% | 3 |
| 2 (new) |  | Halloween () | £2,656,097 | £2,656,097 | £2,656,097 | new | 1 |
| 3 (new) |  | Goosebumps 2: Haunted Halloween (2018) | £2,119,165 | £2,119,165 | £2,119,165 | new | 1 |
| 4 (3) |  | Johnny English Strikes Again (2018) | £1,681,394 | £2,655,936 | £10,973,138 | -42% | 3 |
| 5 (2) |  | Venom (2018) | £1,568,433 | £2,922,406 | £16,652,223 | -48% | 3 |
| 6 (5) |  | Smallfoot () | £1,427,000 | £2,008,664 | £4,332,853 | -39% | 2 |
| 7 (4) |  | First Man (2018) | £1,324,867 | £2,699,905 | £5,115,235 | -45% | 2 |
| 8 (new) |  | Hunter Killer (2018) | £368,082 | £368,082 | £368,082 | new | 1 |
| 9 (new) | | Samons Et Dalila: Met Opera 2018 () | £176,888 | £176,888 | £176,888 | new | 1 |
| 10 (9) |  | The House With a Clock In Its Walls () | £175,353 | £298,209 | £7,706,580 | -56% | 5 |
| 11 (10) |  | Night School () | £175,178 | £367,230 | £4,195,857 | -51% | 4 |
| 12 (8) |  | Bad Times At the El Royale () | £146,063 | £495,152 | £987,030 | -70% | 2 |
| 13 (7) |  | Kler () | £140,427 | £250,091 | £1,256,232 | -86% | 2 |
| 14 (new) | | Badhaai Ho () | £85,576 | £85,576 | £85,576 | new | 1 |
| 15 (17) |  | Christopher Robin () | £74,021 | £91,106 | £14,576,828 | 45% | 10 |
| 16 (13) |  | The Wife () | £61,331 | £157,672 | £1,390,536 | -46% | 4 |
| 17 (new) |  | Fahrenheit 11/9 () | £56,814 | £56,814 | £56,814 | new | 1 |
| 18 (new) | | Namaste England () | £56,709 | £56,709 | £56,709 | new | 1 |
| 19 (new) | | Vada Chennai (2018) | £49,627 | £49,627 | £49,627 | new | 1 |
| 20 (re) |  | They Shall Not Grow Old () | £48,562 | £48,562 | £627,054 | re | 1 |
| 21 (new) | | Dogman () | £46,361 | £46,361 | £46,361 | new | 1 |
| 22 (new) | | PAW Patrol: Big Screen Takeover () | £39,468 | £39,468 | £39,468 | new | 1 |
| 23 (16) |  | King of Thieves (2018) | £34,765 | £93,635 | £5,889,927 | -34% | 6 |
| 24 (49) | | Mayerling: ROH London 2018/19 () | £29,954 | £376,320 | £376,593 | 99% | 2 |
| 25 (new) | | Aate Di Chidi () | £20,501 | £20,501 | £20,501 | new | 1 |
| 26 (21) |  | Mamma Mia! Here We Go Again () | £10,302 | £38,799 | £65,480,203 | -57% | 14 |
| 27 (new) |  | Vs (2018) | £8,801 | £8,801 | £8,801 | new | 1 |
| 28 (new) | | Sandakozhi 2 (2018) | £8,386 | £8,386 | £8,386 | new | 1 |
| 29 (23) |  | Cold War () | £7,807 | £15,891 | £1,070,726 | -20% | 8 |
| 30 (22) | | The Intent 2: The Come Up (2018) | £6,210 | £14,070 | £433,792 | -57% | 5 |
| 31 (new) | | The Lonely Battle of Thomas Reid () | £5,945 | £5,945 | £5,945 | new | 1 |
| 32 (24) |  | The Little Stranger () | £4,225 | £13,692 | £746,199 | -53% | 5 |
| 33 (new) | | Yol Arkadasim 2 (2018) | £3,386 | £3,386 | £3,386 | new | 1 |
| 34 (25) | | King Lear: NT Live 2018 () | £1,965 | £25,423 | £659,187 | -71% | 3 |
| 35 (32) |  | Mission:Impossible - Fallout () | £1,740 | £8,118 | £24,391,287 | -30% | 13 |
| 36 (new) |  | Lost and Found (2018) | £1,303 | £1,303 | £1,303 | new | 1 |
| 37 (36) | | Matangi / Maya / M.I.A. () | £950 | £2,914 | £127,685 | -42% | 5 |
| 38 (30) |  | Yardie (2018) | £923 | £2,721 | £1,147,219 | -80% | 8 |
| 39 (new) | | Science Fair () | £875 | £875 | £875 | new | 1 |
| 40 (37) | | Hurricane () | £734 | £2,116 | £126,097 | -36% | 7 |
| 41 (31) | | Grace and Goliath (2018) | £728 | £1,323 | £11,164 | -74% | 3 |
| 42 (38) | | Redcon 1 () | £725 | £1,305 | £16,614 | -35% | 4 |
| 43 (35) |  | The Importance of Being Earnest 2018 (2018) | £648 | £12,728 | £345,855 | -61% | 2 |
| 44 (6) |  | Cliff Richard Live 60th Anniversary Tour (2018) | £599 | £50,038 | £1,173,923 | -100% | 2 |
| 45 (29) |  | The Children Act () | £380 | £16,795 | £2,799,676 | -93% | 9 |
| 46 (new) | | Touch Me Not (2018) | £362 | £362 | £362 | new | 1 |
| 47 (43) | | Nureyev (2018) | £292 | £1,972 | £72,552 | -44% | 5 |
| 48 (33) |  | Sherlock Gnomes () | £172 | £379 | £9,452,643 | -92% | 24 |
| 49 (58) | | The Eyes of Orson Welles () | £156 | £214 | £34,958 | 40% | 10 |
| 50 (50) | | Sgt. Stubby: An Unlikely Hero () | £71 | £71 | £119,089 | -71% | 11 |
| 51 (re) |  | The Happy Prince () | £61 | £61 | £868,842 | re | 15 |
| 52 (39) |  | Thomas & Friends: Big World Big Adventures: The Movie () | £36 | £535 | £500,489 | -96% | 14 |