UK Box Office 18th August, 2023
| Title | Weekend | Week | Total | % Change | Total Weeks | ||
| 1 (1) |  | Barbie (2023) | £2,697,820 | £6,574,180 | £84,790,946 | -39% | 5 |
| 2 (2) |  | Oppenheimer (2023) | £2,045,953 | £4,260,799 | £50,054,877 | -35% | 5 |
| 3 (new) |  | Blue Beetle (2023) | £1,189,812 | £1,189,812 | £1,189,812 | new | 1 |
| 4 (3) |  | Meg 2: The Trench (2023) | £972,512 | £2,184,007 | £9,754,037 | -38% | 3 |
| 5 (new) |  | Strays (2023) | £598,619 | £598,619 | £598,619 | new | 1 |
| 6 (6) |  | Teenage Mutant Ninja Turtles: Mutant Mayhem (2023) | £589,037 | £1,351,709 | £7,025,343 | -26% | 3 |
| 7 (5) |  | Haunted Mansion (2023) | £517,253 | £1,364,669 | £2,354,753 | -48% | 2 |
| 8 (8) |  | Mission:Impossible - Dead Reckoning Part 1 (2023) | £393,105 | £855,455 | £24,966,406 | -31% | 6 |
| 9 (9) |  | Elemental (2023) | £387,731 | £939,304 | £16,162,030 | -12% | 7 |
| 10 (4) |  | Gran Turismo (2023) | £314,539 | £884,681 | £1,930,519 | -70% | 2 |
| 11 (new) | Metallica: M72 World Tour Live From TX #1 (2023) | £201,115 | £201,115 | £201,115 | new | 1 | |
| 12 (11) |  | Rocky Aur Rani Kii Prem Kahaani (2023) | £186,725 | £336,093 | £1,713,466 | -12% | 4 |
| 13 (7) |  | Jailer (2023) | £184,857 | £466,738 | £1,194,480 | -75% | 2 |
| 14 (12) |  | Talk to Me (2023) | £118,672 | £253,216 | £2,014,774 | -22% | 4 |
| 15 (10) | Gadar 2: The Katha Continues (2023) | £116,546 | £283,876 | £496,294 | -45% | 2 | |
| 16 (13) |  | Indiana Jones and the Dial of Destiny (2023) | £54,583 | £139,673 | £20,047,223 | -27% | 8 |
| 17 (new) |  | The Hiding Place (2023) | £48,691 | £48,691 | £48,691 | new | 1 |
| 18 (14) |  | Insidious: The Red Door (2023) | £36,361 | £141,949 | £8,000,000 | -44% | 7 |
| 19 (new) | Turandot Arena Di Verona (2023) | £30,232 | £30,232 | £30,232 | new | 1 | |
| 20 (21) |  | L'immensità (2022) | £24,341 | £49,074 | £77,299 | -14% | 2 |
| 21 (new) |  | Serpico (1973) 50th Anniversary – 4K Restoration | £21,060 | £21,060 | £21,060 | RE | 1 |
| 22 (18) |  | Spider-Man: Across the Spider-Verse (2023) | £19,847 | £0 | £30,500,000 | -46% | 12 |
| 23 (20) | Puffin Rock and the New Friends (2023) | £10,774 | £51,624 | £195,491 | -62% | 6 | |
| 24 (27) |  | The Little Mermaid (2023) | £10,688 | £19,324 | £27,167,513 | 27% | 13 |
| 25 (new) | Lie With Me (2023) | £10,648 | £10,648 | £10,648 | new | 1 | |
| 26 (26) |  | Asteroid City (2023) | £10,506 | £16,989 | £4,897,248 | 12% | 9 |
| 27 (new) | Ghoomer (2023) | £10,247 | £10,247 | £10,247 | new | 1 | |
| 28 (new) | Priyotoma (2023) | £8,726 | £8,726 | £8,726 | new | 1 | |
| 29 (re) |  | Paddington (2014) Rerelease | £7,173 | £7,173 | £48,022 | RE | 55 |
| 30 (29) |  | Antarctica (2020) | £6,772 | £17,615 | £1,466,202 | -9% | 97 |
| 31 (22) |  | The Super Mario Bros. Movie (2023) | £5,917 | £5,917 | £54,602,060 | -67% | 20 |
| 32 (new) | The Highest of Stakes (2023) | £5,836 | £5,836 | £5,836 | new | 1 | |
| 33 (new) | Mr. Ex (2023) | £5,656 | £5,656 | £5,656 | new | 1 | |
| 34 (25) |  | Ruby Gillman, Teenage Kraken (2023) | £5,225 | £24,385 | £2,464,499 | -64% | 8 |
| 35 (re) |  | Rye Lane (2023) | £4,292 | £4,292 | £1,232,456 | RE | 11 |
| 36 (28) | Thomas & Friends: King of the Railway (2013) Rerelease | £3,211 | £9,526 | £29,639 | -57% | 5 | |
| 37 (new) | Mr. Pregnant (2023) | £2,718 | £2,718 | £2,718 | new | 1 | |
| 38 (new) | The Idiots (1998) Rerelease | £2,202 | £2,202 | £2,202 | RE | 1 | |
| 39 (40) |  | Fleabag: NT Live 2019 (2019) Rerelease | £1,667 | £9,313 | £764,735 | 3% | 42 |
| 40 (new) |  | Love Never Ends (2023) | £1,575 | £1,575 | £1,575 | new | 1 |
| 41 (35) | Face Down (2023) | £1,541 | £5,833 | £9,728 | -60% | 2 | |
| 42 (new) | Ransomed (2023) | £1,536 | £1,536 | £1,536 | new | 1 | |
| 43 (re) |  | Greatest Days (2023) | £1,511 | £1,511 | £1,535,631 | RE | 9 |
| 44 (re) |  | Fantastic Mr. Fox (2009) Rerelease | £1,142 | £1,142 | £9,120,591 | RE | 22 |
| 45 (re) | Squaring the Circle (2023) | £1,113 | £1,113 | £41,149 | RE | 3 | |
| 46 (37) |  | 2001: A Space Odyssey (1968) Rerelease | £1,017 | £2,219 | £411,257 | -66% | 57 |
| 47 (new) | Junior (2023) | £690 | £690 | £690 | new | 1 | |
| 48 (38) | Munda Southall Da (2023) | £488 | £1,179 | £22,987 | -74% | 3 | |
| 49 (re) |  | The Book of Dust: NT Live (2022) | £194 | £194 | £409,885 | RE | 7 |
| 50 (re) |  | Labyrinth (1986) Rerelease | £60 | £60 | £259,145 | RE | 19 |
| 51 (44) | Nessie (2023) | £49 | £420 | £1,408 | -91% | 3 | |