Workmen began removing protective hoarding around a statue of Britain’s wartime leader Winston Churchill on Wednesday, ahead of a visit from French President Emmanuel Macron, after the monument was covered up during racial equality protests.

London Mayor Sadiq Khan’s office confirmed the uncovering was linked to Macron’s visit, which marks the 80th anniversary of General Charles de Gaulle’s radio address to France after the Nazi invasion in 1940, broadcast from London by the BBC...