Portugal-UK 650 are the commemorations of the 650th anniversary of the Anglo-Portuguese Alliance, the oldest diplomatic alliance in the world still in force.
The beginning of the formalization of the Alliance, based on the perpetual friendship between the two countries, occurred with the signing of the Treaty of Tagilde on 10th of July 1372.
The establishment of the Alliance took place, with the signing of the Treaty of Peace, Friendship and Alliance, sealed at St. Paul’s Cathedral, in London, on 16th of June 1373, by King Edward III of England and King Fernando and Queen Leonor of Portugal.
This alliance was later reinforced by the treaty of 1386 (Treaty of Windsor) and several other treaties throughout the centuries.
In addition to the celebration of the most important dates – the 650 years of the Treaty of Tagilde, on 10 July 2022 and the Treaty of Peace, Friendship and Alliance on 16 June 2023 – Portugal-Uk 650 includes other initiatives such as research, education, cultural, cooperation and social activities.