This unique Thomas Cubitt designed lower ground floor flat combines character, practicality, and charm, offering three double bedrooms, three bathrooms, and a separate guest WC. The property's standout feature is its substantial undeveloped vault space, accessible from the main courtyard, which provides a rare opportunity for development (STPP) into a home gym, studio, guest suite, or extended living area. With growing demand for creative lower ground conversions, this added potential makes the flat not only spacious but also smartly future-proofed, making it an attractive option for anyone seeking a distinctive and flexible London home.