The article aims to show some unknown historical facts about the death of King Edward VII of England. In this context the political relations between the British Empire and the Kingdom of Bulgaria are developing. In view of the polarization of Europe between the Triple Alliance and the Entente, Sofia seeks to secure the support of London and to establish good connections and feelings. Bulgaria's foreign policy is still with loose hands, but considering the pursuit of national unification, it looks for allies and friendly countries. Naturally, King Ferdinand I and his family ties to the royal family of England are naturally counting, given the English-Russian idea circulating in the diplomacy of 1908-1909 to create a Balkan Union.