The film was written and directed by Rich Peppiatt and stars bandmates Liam Óg Ó Hannaidh (Mo Chara), Naoise Ó Cairealláin (Móglaí Bap), and JJ Ó Dochartaigh (DJ Próvaí), and also stars Oscar-nominated actor Michael Fassbender.
Speaking at the pre awards event, the band said it would be a "coup" for an Irish language film to win a British award and added that the last year had felt like "blink and you'll miss it".
The incredible film has been nominated for Outstanding Debut, Original Screenplay, Casting, Film Not in the English Language, Editing, and Outstanding British Film categories.
West Belfast rap group Kneecap arrived in style at London's Royal Festival Hall ahead of the ceremony where their Irish-language film has been nominated in six categories.
Arriving on the red carpet on Sunday, JJ Ó Dochartaigh showcased his Irish pride as he donned a suit depicting the country's tri-colour flag alongside his famous matching balaclava.
