Cadogan Hall is a 950-seat capacity concert hall in Sloane Terrace in Chelsea / Belgravia in the Royal Borough of Kensington and Chelsea, London, England. The resident music ensemble at Cadogan Hall is the Royal Philharmonic Orchestra (RPO), the first London orchestra to have a permanent home. Cadogan Estates offered the RPO the use of the hall as its principal venue in late 2001. The RPO gave its first concert as the resident ensemble of Cadogan Hall in November 2004.