The Astor, the flagship and largest apartment at 9 Millbank, is on the market for £29,500,000 (approximately $37,500,000 USD) listed with UK Sotheby’s International Realty.

Named after Viscountess Nancy Astor, the first seated female Member of Parliament in the UK, this opulent residence embodies timeless elegance and British heritage. Nestled in Westminster, the political heart of London, The Astor offers a rare blend of history and modern luxury.

Housed in the Grade II-listed 9 Millbank building, originally constructed in 1929 as Imperial Chemical House, The Astor occupies the prestigious former directors’ dining hall. Following a meticulous two-year restoration by the renowned Berkeley Group, this neo-classical gem has been transformed into a residence of unparalleled refinement, combining Roaring Twenties opulence, British sophistication, and a touch of regal grandeur.

Spanning 9,582 square feet, this duplex penthouse, located on the eighth and ninth floors, features a palatial reception room with carved architraves, gilded domes, hand-cut oak paneling, and herringbone parquet floors. Designed for both grand entertaining and serene relaxation, the space includes multiple living and dining areas adorned with bespoke furnishings curated by interior design studio Goddard Littlefair.

Studio Co-Founder, Martin Goddard, says; “As a born-and-bred Londoner there's a fierce sense of pride in being involved in shaping its visual future. Heritage buildings are a personal passion, as is sustainability. Repurposing buildings and giving them a life beyond their original intended use, both acknowledges our city's past and holds them dear for future generations.”

A custom spiral staircase leads to the mezzanine level, where a library, study, and dedicated bar and games room await. Each space is illuminated by stunning Art Deco chandeliers and enriched with period artwork.

The penthouse offers three generously sized ensuite bedrooms, including an extraordinary primary suite complete with a walk-in wardrobe and two luxurious bathrooms, each featuring walk-in showers and soaking tubs. A two-bedroom annex with its own kitchen and ensuite bathrooms adds versatility for hosting guests or accommodating staff.

The crown jewel of The Astor is its 1,184-square-foot rooftop terrace. Offering panoramic, 360-degree views of London’s most iconic landmarks—including Big Ben, Westminster Abbey, and The Shard—this outdoor haven is perfect for embracing the city’s vibrant energy or enjoying tranquil moments above it all.

Residents of 9 Millbank benefit from a range of world-class amenities, including a pool, spa, fully equipped gym, cinema room, 24-hour concierge service, and a landscaped inner courtyard. Two underground parking spaces further enhance convenience and security.

The Astor is not merely a home; it is a statement. Seamlessly blending historical grandeur with contemporary living, it offers an unrivaled lifestyle in one of London’s most prestigious neighborhoods. Just a short walk from the city’s finest restaurants and shopping, this residence represents a unique opportunity to live at the intersection of legacy, luxury, and sophistication.

Whether hosting dignitaries in the grand reception hall or savoring a quiet evening on the rooftop terrace, The Astor is truly a home like no other.

All photos belong to the listing agency.