Whose main residence is in the building shown?

The Archbishop of Canterbury is the senior bishop and principal leader of the Church of England, the symbolic head of the worldwide Anglican Communion and the diocesan bishop of the Diocese of Canterbury. The current archbishop is Justin Welby. His enthronement took place at Canterbury Cathedral on 21 March 2013. Welby is the 105th in a line which goes back more than 1400 years to Augustine of Canterbury, the "Apostle to the English", sent from Rome in the year 597. Welby succeeded Rowan Williams.

From the time of Augustine until the 16th century, the Archbishops of Canterbury were in full communion with the See of Rome and usually received the pallium from the Pope. During the English Reformation, the Church of England broke away from the authority of the Catholic Church. Thomas Cranmer became the first Protestant holder of the office in 1533, while Reginald Pole was the last Catholic in the position, serving from 1556 to 1558 during the Counter-Reformation.

The archbishop's main residence is Lambeth Palace in the London Borough of Lambeth. He also has lodgings in the Old Palace, Canterbury, located beside Canterbury Cathedral, where the Chair of St Augustine sits.