Instagram/Tina Fey & Jamie Dornan & TV Tina Fey hosts the debut of Saturday Night Live UK! Premieres March 21 with musical guest Wet Leg. Jamie Dornan & Riz Ahmed to follow. April 18, 2026 AceShowbiz - The debut episode of Saturday Night Live UK will be hosted by none other than Tina Fey, marking a notable start for the British adaptation of the iconic sketch show. The premiere is scheduled to air on March 21, with English band Wet Leg set as the first musical guest, according to broadcaster Sky TV.