Rank | Weekend Total | Weeks | Screens | Weekend screen avg. | Cumulative
box office |
|---|
| 1. | The Ugly Truth (2009)  |
£1,976,043 | 1 | 400 | £4,940 | £1,976,043 |
| 2. | G.I. Joe: Rise of Cobra (2009) |
£1,708,760 | 1 | 442 | £3,865 | £1,708,760 |
| 3. | Harry Potter and the Half-Blood Prince (2009) |
£1,349,113 (-54%) | 4 | 535 | £2,521 | £44,376,816 |
| 4. | G-Force (2009) |
£1,223,891 (-51%) | 2 | 426 | £2,872 | £6,271,330 |
| 5. | The Proposal (2009) |
£755,242 (-49%) | 3 | 441 | £1,712 | £9,056,654 |
| 6. | The Taking of Pelham 123 (2009) |
£661,334 (-63%) | 2 | 381 | £1,735 | £3,452,172 |
| 7. | Ice Age: Dawn of the Dinosaurs (2009) |
£612,570 (-46%) | 6 | 480 | £1,276 | £31,024,152 |
| 8. | Orphan (2009) |
£570,146 | 1 | 285 | £2,000 | £570,146 |
| 9. | The Hangover (2009) |
£279,531 (-46%) | 9 | 239 | £1,169 | £21,260,366 |
| 10. | Coco Before Chanel (2009) |
£249,732 (-41%) | 2 | 98 | £2,548 | £1,057,612 |