Lynne Ramsay’s “We Need to Talk About Kevin” won best film at the 55th BFI London Film Festival.Ramsay, who accepted the award with her co-writer and husband Rory Kinnear, reminded the audience that she had won the fest’s Sutherland Award for her debut, “Ratcatcher,” 12 years earlier. This year’s Sutherland Award for the most original and imaginative first film went to Pablo Giorgelli for his Argentinian road movie, “Las Acacias.” First-time actress Candese Reid, the 18-year-old star of low-budget Brit film “Junkhearts,” won the best British newcomer award. Werner Herzog’s “Into the Abyss” took the Grierson Award for docu. Jury chairman Simon Curtis said the jury was unanimous that two other films were equally deserving of the prize — Don Argott and Demian Fenton’s “Last Days Here” and Katie Galloway and Kelly Duane de la Vega’s “Better This World.” Prizes were handed out on the fest’s penultimate night at LSO St. Lukes, a converted church now home to the London Symphony Orchestra. The fest, which opened Oct. 12 with “360,” closes Thursday with Terence Davies’ “The Deep Blue Sea.” Ralph Fiennes and David Cronenberg were each given BFI Fellowships, the highest honor handed out by the British Film Institute.