Created in 1973, the Union des Grands Crus de Bordeaux is a group of 131 top châteaux based in the finest appellation in the Gironde including the Médoc, Graves and Pessac-Léognan, Sauternes, Barsac, Saint Emilion and Pomerol. Together they have developed an international tasting programme covering 5 countries and 65 cities each year. The Union des Grands Crus de Bordeaux hosts its annual wine tasting in London every autumn. Around 110-120 members present their wines to UK trade and press guests at an informal walk round tasting.