TMDb/Saturday Night Live UK TV Nicola Coughlan hosts SNL UK, joking about cocaine, when Jimmy Fallon makes a surprise cameo that steals the show. April 26, 2026 AceShowbiz - SNL UK recently featured an unexpected and lively guest appearance by American talk show host and former cast member of the original show, Jimmy Fallon. During the latest episode airing on Sky One, Nicola Coughlan took center stage as the host, opening with a humorous monologue about preparing for her role on the show.