Back to Black star Jack O'Connell reveals surprise favourite thing about filming slammed biopic
![Back to Black star Jack O'Connell reveals surprise favourite thing about filming slammed biopic](https://i2-prod.mirror.co.uk/incoming/article32548446.ece/ALTERNATES/s615/0_SOCIAL-Jack.jpg)
The premier of Back to Black, the Amy Winehouse biopic about the iconic singer's rise to fame, took place last night and Jack O'Connell says there was only one thing on the cast's mind