UK Weekend Box Office
UK Box Office 20th August, 2021
| Title | Weekend | Week | Total | % Change | Total Weeks | ||
| 1 (1) |  | Free Guy (2021) | £2,267,660 | £4,719,418 | £7,197,309 | -8% | 2 |
| 2 (2) |  | The PAW Patrol: Movie (2021) | £1,033,099 | £2,058,666 | £4,469,162 | -57% | 2 |
| 3 (new) |  | People Just Do Nothing: Big In Japan (2021) | £896,992 | £896,992 | £896,992 | new | 1 |
| 4 (3) |  | The Suicide Squad (2021) | £653,885 | £1,525,231 | £12,346,603 | -39% | 4 |
| 5 (4) |  | Jungle Cruise (2021) | £652,473 | £1,549,656 | £10,025,793 | -23% | 4 |
| 6 (new) |  | Snake Eyes: G.I. Joe Origins (2021) | £542,265 | £542,265 | £542,265 | new | 1 |
| 7 (5) |  | Space Jam: A New Legacy (2021) | £435,248 | £1,010,663 | £11,134,791 | -14% | 6 |
| 8 (6) |  | The Croods: A New Age (2020) | £410,507 | £969,589 | £7,996,214 | -3% | 6 |
| 9 (new) |  | The Night House (2020) | £315,610 | £315,610 | £315,610 | new | 1 |
| 10 (8) |  | The Courier (2020) | £276,792 | £627,932 | £966,952 | -18% | 2 |
| 11 (new) |  | Reminiscence (2021) | £260,111 | £260,111 | £260,111 | new | 1 |
| 12 (9) |  | Spirit Untamed (2021) | £181,224 | £473,981 | £2,707,337 | -25% | 4 |
| 13 (7) |  | Don't Breathe 2 (2021) | £150,750 | £433,460 | £783,162 | -57% | 2 |
| 14 (new) |  | Around the World In 80 Days (2021) | £120,503 | £120,503 | £120,503 | new | 1 |
| 15 (10) |  | Black Widow (2021) | £110,611 | £333,262 | £18,494,039 | -51% | 7 |
| 16 (16) |  | Peter Rabbit 2: The Runaway (2021) | £68,011 | £210,000 | £20,010,000 | 12% | 14 |
| 17 (new) |  | Censor (2021) | £63,632 | £63,632 | £63,632 | new | 1 |
| 18 (new) | Bell Bottom (2021) | £58,680 | £58,680 | £58,680 | new | 1 | |
| 19 (11) |  | Stillwater (2021) | £55,250 | £143,898 | £1,100,000 | -67% | 3 |
| 20 (new) |  | Pig (2021) | £47,976 | £47,976 | £47,976 | new | 1 |
| 21 (12) |  | Old (2021) | £41,013 | £118,293 | £3,300,000 | -62% | 5 |
| 22 (14) | Puaada (2021) | £37,680 | £72,136 | £156,114 | -55% | 2 | |
| 23 (new) | Barbie Big City Big Dreams (2021) | £36,962 | £36,962 | £36,962 | new | 1 | |
| 24 (15) |  | Fast and Furious 9 (2021) | £24,758 | £72,714 | £16,371,498 | -60% | 9 |
| 25 (19) |  | Limbo (2020) | £21,324 | £44,423 | £236,444 | 7% | 4 |
| 26 (17) |  | The Last Letter From Your Lover (2021) | £15,459 | £93,059 | £686,901 | -74% | 3 |
| 27 (new) | The Bright Side (2020) | £10,883 | £10,883 | £10,883 | new | 1 | |
| 28 (new) |  | Antarctica (2020) | £8,796 | £8,796 | £8,796 | new | 1 |
| 29 (25) |  | Cruella (2021) | £6,226 | £20,192 | £9,431,482 | -27% | 13 |
| 30 (26) |  | The Sparks Brother's (2021) | £4,870 | £13,393 | £222,420 | -20% | 4 |
| 31 (32) |  | The Snail and the Whale w/ Zog and the Flying Doctors (2021) | £3,206 | £4,338 | £30,157 | -3% | 3 |
| 32 (re) |  | Hey Duggee At the Cinema (2019) | £2,884 | £2,884 | £94,945 | re | 29 |
| 33 (new) | Sabaya (2021) | £2,811 | £2,811 | £2,811 | new | 1 | |
| 34 (34) |  | The Father (2021) | £2,730 | £11,601 | £2,070,776 | 13% | 11 |
| 35 (41) |  | The Hitman's Wife's Bodyguard (2021) | £2,293 | £3,216 | £3,841,816 | 57% | 10 |
| 36 (33) |  | Tom & Jerry: The Movie (2021) | £2,204 | £3,594 | £1,263,653 | -17% | 14 |
| 37 (39) |  | After Love (2021) | £1,481 | £2,272 | £123,780 | 19% | 10 |
| 38 (31) |  | Minamata (2020) | £1,413 | £3,267 | £6,630 | -58% | 2 |
| 39 (re) |  | Bait (2019) | £1,315 | £1,315 | £536,532 | re | 29 |
| 40 (new) | Conni and the Cat (2020) | £1,049 | £1,049 | £1,049 | new | 1 | |
| 41 (23) |  | Boys From County Hell (2020) | £1,034 | £9,991 | £73,174 | -89% | 3 |
| 42 (46) |  | Supernova (2020) | £936 | £12,900 | £756,241 | 55% | 9 |
| 43 (40) | The Gruffalo and Zog (2021) | £756 | £2,124 | £97,776 | -31% | 10 | |
| 44 (38) |  | Nowhere Special (2021) | £556 | £2,204 | £106,402 | -62% | 5 |
| 45 (re) |  | Trainspotting (1996) Rerelease | £540 | £540 | £37,321 | re | 14 |
| 46 (re) |  | 42nd Street: The Musical (2019) | £406 | £406 | £1,452,245 | re | 20 |
| 47 (30) | Profile (2021) | £404 | £2,442 | £68,594 | -89% | 3 | |
| 48 (re) |  | The Witches (2020) | £243 | £243 | £27,374 | re | 12 |
| 49 (re) | Poly Styrene: I Am a Cliche (2021) | £200 | £200 | £2,668 | re | 5 | |
| 50 (re) |  | Brassed Off (1996) Rerelease | £92 | £92 | £5,351 | re | 17 |
| 51 (re) |  | Ammonite (2020) | £76 | £76 | £191,400 | re | 11 |
| 52 (50) |  | Bhaji On the Beach (1994) Rerelease | £66 | £354 | £3,245 | 44% | 9 |
| 53 (re) |  | County Lines (2019) | £58 | £58 | £15,804 | re | 4 |
| 54 (28) |  | Bings Animal Stories (2021) | £33 | £3,536 | £49,009 | -99% | 8 |
| 55 (47) | The Reason I Jump (2021) | £30 | £629 | £73,663 | -93% | 9 | |
| 56 (49) | Lady Boss: The Jackie Collins Story (2021) | £29 | £29 | £16,174 | -57% | 7 | |