The Naval and Military Club, affectionately and universally known as 'The In & Out', offers excellent facilities in the heart of London's Mayfair. Located at No. 4 St James's Square, this beautiful building has retained all of the original features of its magnificent staterooms. Steeped in history and with its grand and illustrious past, this Grade II listed house is the perfect setting to impress your guests, whatever the occasion.