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 Windsor to London and admitted to King Edward VII Hospital after being diagnosed with an infection. He spent two nights in the hospital and was unable to attend the State Opening of Parliament and Royal Ascot. Prince Philip retired from his royal duties on 2 August 2017, meeting Royal Marines in his final solo public engagement, aged 96. Since 1952 he had completed 22,219 solo engagements. Prime Minister Theresa May thanked him, via Twitter, for "a remarkable lifetime of service". On 20 November 2017, he celebrated his 70th wedding anniversary with the Queen, which made her the first British monarch