| Title | Weekend | Week | Total | % Change | Total Weeks | ||
| 1 (new) | ![]() | Solo: A Star Wars Story (2018) | £6,061,231 | £6,061,231 | £6,061,231 | new | 1 |
| 2 (1) | ![]() | Deadpool 2 (2018) | £3,771,293 | £7,707,910 | £20,682,579 | -71% | 2 |
| 3 (2) | ![]() | Avengers: Infinity War (2018) | £1,215,206 | £2,084,312 | £66,138,820 | -41% | 5 |
| 4 (3) | ![]() | Sherlock Gnomes (2018) | £689,914 | £867,037 | £4,343,619 | -3% | 3 |
| 5 (new) | ![]() | Show Dogs (2018) | £546,405 | £546,405 | £546,405 | new | 1 |
| 6 (4) | ![]() | I Feel Pretty (2018) | £278,748 | £549,387 | £4,467,136 | -32% | 4 |
| 7 (6) | ![]() | Blade Runner (1982) Rerelease | £227,194 | £326,722 | £2,698,172 | 1% | 15 |
| 8 (11) | ![]() | On Chesil Beach (2018) | £170,841 | £221,333 | £288,350 | 61% | 2 |
| 9 (14) | ![]() | Peter Rabbit (2018) | £118,214 | £217,199 | £40,344,166 | 57% | 11 |
| 10 (5) | ![]() | Life of the Party (2018) | £112,995 | £290,055 | £1,409,252 | -50% | 3 |
| 11 (7) | ![]() | Breaking In (2018) | £81,398 | £194,011 | £969,030 | -49% | 3 |
| 12 (new) | The Breadwinner (2018) | £79,329 | £79,329 | £79,329 | new | 1 | |
| 13 (8) | ![]() | A Quiet Place (2018) | £70,675 | £166,926 | £11,801,912 | -44% | 8 |
| 14 (new) | Edie (2018) | £68,555 | £68,555 | £68,555 | new | 1 | |
| 15 (new) | Mckellen Playing the Part Live 2018 (2018) | £41,110 | £41,110 | £41,110 | new | 1 | |
| 16 (new) | ![]() | Exhibition On Screen: I Claude Monet 2018 (2017) | £34,663 | £34,663 | £34,663 | new | 1 |
| 17 (9) | ![]() | The Guernsey Literary and Potato Peel Pie Society (2018) | £34,612 | £194,396 | £5,522,188 | -63% | 6 |
| 18 (new) | Parmanu the Story of Pokhran (2018) | £22,582 | £22,582 | £22,582 | new | 1 | |
| 19 (new) | The Little Vampire (2018) | £20,570 | £20,570 | £20,570 | new | 1 | |
| 20 (16) | ![]() | Lean On Pete (2018) | £20,397 | £51,494 | £315,220 | -34% | 4 |
| 21 (new) | ![]() | Zama (2018) | £18,690 | £18,690 | £18,690 | new | 1 |
| 22 (18) | Funny Cow (2018) | £10,357 | £36,045 | £475,556 | -40% | 6 | |
| 23 (17) | ![]() | Entebbe (2018) | £8,907 | £36,205 | £270,405 | -71% | 3 |
| 24 (19) | ![]() | Isle of Dogs (2018) | £8,850 | £17,035 | £5,949,641 | -29% | 9 |
| 25 (new) | Kasal (2018) | £6,767 | £6,767 | £6,767 | new | 1 | |
| 26 (new) | Panchavarnathatha (2018) | £5,672 | £5,672 | £5,672 | new | 1 | |
| 27 (28) | ![]() | 2001: A Space Odyssey (1968) Rerelease | £5,365 | £5,365 | £381,213 | 13% | 30 |
| 28 (new) | The Rape of Recy Taylor (2017) | £5,134 | £5,134 | £5,134 | new | 1 | |
| 29 (21) | ![]() | Early Man (2018) | £4,600 | £5,207 | £11,170,630 | -51% | 18 |
| 30 (22) | ![]() | Beast (2018) | £4,280 | £15,222 | £391,807 | -54% | 4 |
| 31 (10) | An American In Paris: The Musical (2018) | £4,199 | £39,497 | £738,679 | -94% | 2 | |
| 32 (25) | ![]() | Ready Player One (2018) | £2,786 | £7,305 | £16,101,511 | -51% | 9 |
| 33 (26) | ![]() | Tea With the Dames (2018) | £2,646 | £11,270 | £178,032 | -49% | 3 |
| 34 (32) | ![]() | Finding Your Feet (2018) | £2,387 | £10,532 | £5,714,641 | -2% | 14 |
| 35 (re) | That Good Night (2018) | £2,106 | £2,106 | £29,839 | re | 2 | |
| 36 (34) | ![]() | Bing At the Cinema (2018) | £1,920 | £2,882 | £113,214 | 8% | 5 |
| 37 (new) | Nela Ticket (2018) | £1,831 | £1,831 | £1,831 | new | 1 | |
| 38 (new) | This Is Congo (2018) | £1,394 | £1,394 | £1,394 | new | 1 | |
| 39 (38) | ![]() | Macbeth: NT Live 2018 (2018) | £974 | £10,274 | £490,796 | 30% | 3 |
| 40 (re) | Make More Noise! Suffragettes In Silent Film (2015) | £672 | £672 | £15,418 | re | 8 | |
| 41 (29) | ![]() | Ghost Stories (2018) | £583 | £6,424 | £1,642,821 | -85% | 8 |
| 42 (re) | ![]() | You Were Never Really Here (2018) | £310 | £310 | £1,028,650 | re | 11 |
| 43 (37) | The Dam Busters At 75 Live From the Royal Albert Hall (2018) | £96 | £1,022 | £553,686 | -86% | 2 | |
| 44 (re) | ![]() | Paddington 2 (2017) | £80 | £80 | £42,642,626 | re | 28 |
| 45 (42) | Monster Family (2018) | £71 | £363 | £359,343 | -81% | 13 | |
| 46 (46) | New Town Utopia (2018) | £45 | £2,181 | £9,936 | -80% | 4 | |