Edinburghs open Portugal visit by reuniting Treaty of Windsor originals for first time since 1386

The Duke and Duchess of Edinburgh opened a three-day official visit to Portugal on June 1, beginning at the Portuguese National Archive in Lisbon, where they unveiled the first display of the original English and Portuguese copies of the Treaty of Windsor side by side — the first time the two documents have been brought together since the treaty was sealed in 1386. The visit marks 640 years of the Anglo-Portuguese alliance, the world's oldest alliance still in force.

Prince Edward and Duchess Sophie then rode one of Lisbon's iconic trams through the capital — a journey Hello! reported brought parts of the city to a standstill — were greeted at Estrela Garden by Mayor Carlos Moedas, and ended the day at a garden party at the British Ambassador's residence celebrating ties between the British and Portuguese communities. Over the following two days the programme took in St Julian's School, a Model NATO session at the National Defence Institute where Sophie spoke on Women, Peace and Security, aerospace firm TEKEVER, a wreath-laying at Batalha Monastery's Tomb of the Unknown Soldier, and Porto, where the couple received the Keys to the City.