All of Us Strangers takes best film and director at British Independent Film Awards

Drama of grief and new romance starring Andrew Scott and Paul Mescal wins seven awards, while Mia McKenna Bruce wins best lead performance for How to Have Sex

All of Us Strangers, Andrew Haigh's revolutionary romance starring Andrew Scott as a screenwriter grappling with the death of his parents when he was a child, has taken best picture, best director and best screenplay at the British Independent Film Awards.

The film had already taken four prizes at the craft division of the Bifas last month, for editing, cinematography, music supervision and screenplay; it added three more at the ceremony at Old Billingsgate in London on Sunday. As well as the wins for Haigh, Paul Mescal took best supporting actor for his performance as a younger man who begins a relationship with Scott's character.