This evening the Royal Institute of International Affairs holds its Annual General Meeting. This will be held at the House the RIIA is better known as "Chatham House". The RIIA was founded in 1920 and is based in St James Square. Chatham House itself was the home of William Pitt the Elder (later, the Earl of Chatham); and two other Prime Ministers - William Gladstone and the Earl of Derby.
Chatham House has its own website - http://www.chathamhouse.org.uk/. It is also famous for the "Chatham house Rule" - which says "When a meeting, or part thereof, is held under the Chatham House Rule, participants are free to use the information received, but neither the identity nor the affiliation of the speaker(s), nor that of any other participant, may be revealed".