Langan’s, a brasserie off Piccadilly with curling orange neon signage calling its name, is under new management after it fell into administration in 2020. It is a famous brasserie — London’s version of La Coupole — once owned by Michael Caine, a famous actor, and Peter Langan, a famous drunk, who would crawl across the floor and bite customers’ ankles and who once put out a kitchen fire with champagne.