From each ticket sold, a donation will be made to support Ukraine via the Disasters Emergency Committee.
The film, about a young female Ukrainian gymnast forced to train in exile, had its U.K. premiere at the Glasgow Film Festival earlier this week.
The preview screenings will be taking place in over 200 cinemas from March 18, with more cinemas joining the initiative each day. Participating cinemas include Cineworld, Curzon, Everyman, Odeon, Vue and Picturehouse chains, as well as the independent venues which make up the members and lead organizations of the BFI Film Audience Network. The previews are also supported by the UK Cinema Association.www.bfi.org.uk