It was granted its Royal Charter in 1837 under King William IV. Supplemental Charters of 1887, 1909 and 1925 were replaced by a single Charter in 1971, and there have been minor amendments since then.
When did the Royal Institute receive its charter? Who was responsible for giving the charter to the Royal Institute? In what years was the Royal Institute issued supplemental charters? When were the various supplemental charters consolidated? What term characterizes the nature of changes to the charter after 1971?