| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (new) |  | Big Hero 6 () | £4,293,286 | £4,293,286 | £4,293,286 | new | 1 |
| 2 (new) |  | Kingsman: The Secret Service () | £4,241,292 | £4,241,292 | £4,241,292 | new | 1 |
| 3 (1) |  | American Sniper (2015) | £1,586,745 | £2,718,419 | £9,335,482 | -38% | 3 |
| 4 (3) |  | The Theory of Everything (2014) | £1,032,912 | £1,904,024 | £16,643,178 | -35% | 5 |
| 5 (2) |  | Tak3n (2015) | £801,562 | £1,388,285 | £16,560,282 | -56% | 4 |
| 6 (4) |  | Into the Woods () | £734,370 | £1,138,526 | £8,411,168 | -46% | 4 |
| 7 (6) |  | Paddington (2014) | £442,869 | £542,461 | £35,517,698 | -41% | 10 |
| 8 (5) |  | Ex Machina () | £410,327 | £961,742 | £2,055,694 | -62% | 2 |
| 9 (new) |  | Inherent Vice () | £363,133 | £363,133 | £363,133 | new | 1 |
| 10 (new) | | Les Contes D'Hoffmann: Met Opera 2015 (2015) | £238,597 | £238,597 | £238,597 | new | 1 |
| 11 (9) |  | Birdman Or (The Unexpected Virtue of Ignorance) (2015) | £160,294 | £376,575 | £5,044,674 | -58% | 5 |
| 12 (12) |  | Annie () | £157,137 | £176,629 | £7,393,544 | -51% | 6 |
| 13 (10) |  | Whiplash (2014) | £124,290 | £342,676 | £1,622,987 | -67% | 3 |
| 14 (13) |  | Night At the Meseum: Secret of the Tomb (2014) | £122,120 | £141,873 | £11,766,767 | -60% | 7 |
| 15 (16) |  | Testament of Youth () | £116,773 | £415,287 | £1,422,843 | -49% | 3 |
| 16 (18) |  | The Imitation Game (2014) | £91,666 | £211,092 | £15,745,813 | -51% | 12 |
| 17 (new) |  | Trash (2014) | £79,178 | £79,178 | £79,178 | new | 1 |
| 18 (19) |  | The Woman In Black: Angel of Death (2015) | £24,753 | £68,442 | £4,982,977 | -82% | 5 |
| 19 (new) |  | Eh Janam Tumhare Lekhe () | £24,221 | £24,221 | £24,221 | new | 1 |
| 20 (new) |  | Son of a Gun () | £21,065 | £21,065 | £21,065 | new | 1 |
| 21 (20) | | Baby (2015) | £17,379 | £47,418 | £115,373 | -74% | 2 |
| 22 (31) |  | Nativity 3: Dude Where's My Donkey?! () | £14,447 | £14,447 | £7,507,850 | 95% | 12 |
| 23 (22) |  | Mr. Turner (2014) | £3,780 | £21,702 | £6,686,046 | -58% | 13 |
| 24 (new) | | No Manifesto a Film About Manic Street Preachers () | £3,624 | £3,624 | £3,624 | new | 1 |
| 25 (new) |  | Tales of the Grim Sleeper (2015) | £1,958 | £1,958 | £1,958 | new | 1 |
| 26 (23) |  | Beyond Clueless (2015) | £1,913 | £15,920 | £22,566 | -71% | 2 |
| 27 (new) | | Pelo Malo () | £1,895 | £1,895 | £1,895 | new | 1 |
| 28 (29) | | My Old Lady (2014) | £1,221 | £6,132 | £591,863 | 15% | 10 |
| 29 (28) | | Citizenfour (2014) | £666 | £1,776 | £144,795 | -41% | 10 |
| 30 (38) | | Night Will Fall (2014) | £425 | £2,230 | £48,134 | 80% | 9 |
| 31 (34) | | Kajaki: The True Story (2014) | £395 | £395 | £155,883 | -20% | 7 |
| 32 (26) | | Kon Tiki (2012) | £288 | £3,669 | £70,905 | -82% | 7 |
| 33 (re) |  | '71 () | £195 | £195 | £1,027,839 | re | 13 |
| 34 (35) | | Hockney (2014) | £126 | £5,251 | £202,807 | -73% | 8 |
| 35 (re) | | The Possibilities Are Endless (2014) | £102 | £102 | £39,577 | re | 6 |
| 36 (32) |  | Black Sea (2014) | £30 | £505 | £560,211 | -95% | 8 |