The importance of the office is reflected by the composition of the Accession Council, a body which proclaims the accession of new Sovereigns. The Council includes the Lord Mayor and Aldermen of London, as well as members of the House of Lords and Privy Counsellors. At the coronation banquet which followed, the Lord Mayor of the City of London had the right to assist the Royal Butler. The same privilege is held by the Lord Mayor of Oxford; the Mayor of Winchester may assist the Royal Cook. Such privileges have not been exercised since 1821, when the last coronation banquet (celebrating the coronation of George IV) was held.