Twenty-six, according to the UK National Inventory of War Memorials (in the process of re-branding as the Imperial War Museum War Memorials Archive). Started in 1989, the volunteer-run project (there is only one full-time staffer at the IWM) maintains a database of more than 60,000 memorials (the definition is broad, including non-combatant deaths of military personnel in both war and peace and victims of terrorism). When the project began, the best estimate was that there were 25,000 war memorials in Britain. After a decade 33,000 had been recorded and the estimate was 60,000. By 2010 the inventory was up to 60,000 and the estimate was around 100,000. The number continues to grow, not least because of an unquiet world: in 2010, the archive had recorded 504 memorials unveiled since January 1, 2000 (though just over 400 were for one or the other of the World Wars).