The Biltmore Mayfair on London’s Grosvenor Square has announced plans to debrand from Hilton’s LXR collection, and will operate independently from 1 May. The 307-room hotel previously operated as the Millennium Hotel London Mayfair until 2019 when it reopened as the Biltmore Mayfair, LXR Hotels & Resorts following an 18-month, £60 million renovation project. It…