Prince William didn't let an unexpected health risk derail him from carrying on with his latest royal engagement! While the Duke of Cambridge put on a tea party that honoured NHS workers as part of a nationwide event on Monday, the Duchess of Cambridge was noticeably absent— with good reason.

Prince William puts on NHS tea party with Kate in quarantine

Prince William could be seen chatting with those in attendance at the "Big Tea," which was held at Buckingham Palace. But while both William and Duchess Kate were expected to appear, Kate recently learned she had to quarantine after coming into close contact with someone who tested positive for COVID-19. The announcement was made hours before the event, and she was forced to stay home.

The office of the Duke and Duchess of Cambridge said the "Big Tea" was intended to celebrate those who have "gone above and beyond to tackle the COVID-19 pandemic." As People reports, William talked to individuals in all sorts of roles, from those who are directly involved in the front lines to those who take up other important staffing roles within the community.

Prince William, Duke of Cambridge hosts a NHS Big Tea garden party to commemorate the NHS's 73rd Birthday on July 5, 2021.

Prior to hosting the "Big Tea" sans Kate, William also made another solo event appearance earlier on in the day. The royal was seen at St. Paul's Cathedral at an event was held commemorating 73 years since the NHS was formed. William isn't the only member of the royal family to show support for frontline workers recently! Queen Elizabeth II also awarded the NHS a special honour the day prior, penning a special note to make the announcement.