Court of St James's
The Court of St James's is the royal court for the Sovereign of the United Kingdom. All ambassadors and high commissioners to the United Kingdom are formally received by the court. All ambassadors and high commissioners from the United Kingdom are formally accredited from the court –  – as they are representatives of the Crown.
The Marshal of the Diplomatic Corps (before 1920, Master of the Ceremonies), who acts as the link between the British monarch and foreign diplomatic missions, is permanently based at St James's Palace. In 1886, there were only 6 ambassadors in London, with 37 other countries represented by ministers. By 2015, this had increased to 175 foreign missions accredited to the Court of St James's: 47 high commissions from Commonwealth countries and 128 embassies from non-Commonwealth countries.
Official meetings and receptions associated with the court, such as Privy Council meetings or the annual Diplomatic Reception attended by 1,500 guests, are held wherever the monarch is in residence—usually Buckingham Palace.