Prince Philip, Duke of Edinburgh said that he would now slow down and reduce his duties, stating that he had "done [his] bit". His wife, the Queen, gave him the title Lord High Admiral for his 90th birthday. While staying at the royal residence at Sandringham, Norfolk, on 23 December 2011, the Duke suffered chest pains and was taken to the cardio-thoracic unit at Papworth Hospital, Cambridgeshire, where he underwent successful coronary angioplasty and stenting. He was discharged on 27 December. On 4 June 2012, during the celebrations in honour of his wife's Diamond Jubilee, Philip was taken from Windsor Castle to the King Edward
Prince Philip, Duke of Edinburgh he served with distinction in the Mediterranean and Pacific Fleets. After the war, Philip was granted permission by King George VI to marry Elizabeth. Before the official announcement of their engagement in July 1947, he abandoned his Greek and Danish royal titles and became a naturalised British subject, adopting the surname Mountbatten from his maternal grandparents. He married Elizabeth on 20 November 1947. Just before the wedding, he was created Baron Greenwich, Earl of Merioneth and Duke of Edinburgh. Philip left active military service when Elizabeth became monarch in 1952, having reached the rank of commander, and was formally made