the organisation is incorporated by royal charter, is registered as a charity in england, and has more than 27,000 fellows living in around 70 countries who support the aims of the society, and who have achieved — or who have the potential to achieve — eminence in their profession or calling. its patron is currently hm queen elizabeth ii, its president is hrh the princess royal (who replaced her father, hrh prince philip in 2011), its chairman is luke johnson (businessman) and its chief executive is matthew taylor.