Queen Elizabeth II's husband has returned to official duties following a heart procedure that saw him spend Christmas in hospital.
Prince Philip attended a fundraising dinner at Cambridge University Tuesday to support its Scott Polar Research Institute _ his first official engagement since the procedure.
Philip was admitted to Papworth Hospital with chest pains just before the holidays and underwent a successful coronary stent procedure.
After spending four nights at Papworth recovering from the procedure, the 90-year-old was soon back on his feet, joining the rest of the royal family at their traditional New Year's Day church service just days after his release.
The health scare was the most serious suffered by Philip, who is known to be active and robust but had expressed a desire to scale down his royal engagements upon his 90th birthday.
Tuesday's dinner was held 100 years to the day since English explorer Robert F. Scott and his expedition reached the South Pole
The prince, wearing a dark suit, joined the explorer's two granddaughters and other guests including Prince Albert of Monaco at the event supporting polar exploration.