| Title | Weekend | Week | Total | % Change | Total Weeks |
| 1 (new) |  | The Hunger Games: Mockingjay Part 2 (2015) | £11,255,566 | £11,255,566 | £11,255,566 | new | 1 |
| 2 (1) |  | Spectre (2015) | £3,821,156 | £6,733,372 | £84,313,251 | -51% | 4 |
| 3 (2) |  | The Lady In the Van (2015) | £1,609,943 | £4,181,019 | £6,437,140 | -29% | 2 |
| 4 (3) |  | Hotel Transylvania 2 (2015) | £539,251 | £629,517 | £19,189,306 | -41% | 6 |
| 5 (6) |  | Brooklyn (2015) | £409,100 | £1,000,157 | £3,782,618 | -48% | 3 |
| 6 (5) |  | Steve Jobs (2015) | £404,026 | £872,915 | £1,776,129 | -55% | 2 |
| 7 (new) |  | The Dressmaker (2015) | £235,968 | £235,968 | £235,968 | new | 1 |
| 8 (7) |  | Pan (2015) | £230,282 | £278,772 | £8,694,861 | -53% | 6 |
| 9 (4) |  | Prem Ratan Dhan Payo (2015) | £217,514 | £480,746 | £1,392,688 | -76% | 2 |
| 10 (re) |  | The Rocky Horror Show Live (2015) | £113,893 | £113,893 | £470,070 | RE | 3 |
| 11 (new) |  | The Perfect Guy (2015) | £102,924 | £102,924 | £102,924 | new | 1 |
| 12 (8) |  | The Martian (2015) | £102,322 | £214,448 | £23,321,249 | -65% | 8 |
| 13 (new) | | Lulu: Met Opera 2015 (2015) | £92,708 | £92,708 | £92,708 | new | 1 |
| 14 (9) |  | Suffragette (2015) | £65,973 | £309,022 | £9,557,576 | -74% | 6 |
| 15 (re) |  | Inside Out (2015) | £56,626 | £56,626 | £39,114,257 | RE | 15 |