| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (new) |  | The Second Best Exotic Marigold Hotel (2015) | £3,771,852 | £3,771,852 | £3,771,852 | new | 1 |
| 2 (1) |  | Fifty Shades of Grey (2015) | £2,248,492 | £5,071,376 | £30,314,012 | -51% | 3 |
| 3 (new) |  | Focus () | £1,910,245 | £1,910,245 | £1,910,245 | new | 1 |
| 4 (2) |  | Big Hero 6 () | £1,219,171 | £1,491,074 | £17,669,306 | -53% | 5 |
| 5 (3) |  | Shaun the Sheep Movie (2015) | £1,008,452 | £1,296,610 | £11,648,735 | -58% | 4 |
| 6 (4) |  | Kingsman: The Secret Service () | £667,464 | £1,167,380 | £14,553,017 | -45% | 5 |
| 7 (new) |  | The Boy Next Door () | £406,174 | £406,174 | £406,174 | new | 1 |
| 8 (new) |  | It Follows () | £371,142 | £371,142 | £371,142 | new | 1 |
| 9 (5) |  | The Wedding Ringer () | £368,213 | £807,251 | £1,797,696 | -63% | 2 |
| 10 (8) |  | The Theory of Everything (2014) | £333,039 | £713,782 | £20,621,855 | -25% | 9 |
| 11 (7) |  | Peppa Pig: The Golden Boots (2015) | £203,528 | £305,404 | £2,326,328 | -60% | 3 |
| 12 (10) |  | American Sniper (2015) | £169,669 | £402,536 | £13,424,242 | -59% | 7 |
| 13 (9) |  | Jupiter Ascending () | £140,432 | £315,322 | £4,241,234 | -68% | 4 |
| 14 (6) |  | Project Almanac (2015) | £137,479 | £297,193 | £1,165,223 | -84% | 2 |
| 15 (re) |  | Birdman Or (The Unexpected Virtue of Ignorance) (2015) | £132,445 | £132,445 | £5,673,841 | re | 6 |