William and PM at St Paul’s service during ’emotional day’ for NHS July 6, 2021 LONDON: The Duke of Cambridge and the Prime Minister have joined frontline health staff in marking the 73rd anniversary of the NHS on a “really emotional day” at St Paul’s Cathedral. NHS chief executive Sir Simon Stevens hailed millions of NHS staff, carers and volunteers who had “served so selflessly”, as William, Boris Johnson, opposition party leaders and health service chiefs came together at the historic place of worship in central London. The duke had been due to appear with the Duchess of Cambridge, but after coming into contact with someone who tested positive for coronavirus, Kate was unable to attend.Deputy chief medical officer for England Professor