The Duke of Edinburgh looked in good health as he arrived at his first official engagement since his heart scare.
Attending a fund-raising dinner at Cambridge University, Philip, aged 90, showed no signs of the heart problem which saw him spend Christmas in hospital.
Wearing a black overcoat over a dark suit, he looked relaxed as he passed photographers outside Corpus Christi College.
The Duke has spent the festive break convalescing at the Queen's private Sandringham estate after he was successfully treated for a blocked coronary artery on Christmas Eve.
A few days after being discharged from Papworth Hospital, Cambridgeshire, he made an appearance at a church service on New Year's Day and was applauded by the crowds who had gathered.
At the private dinner, 100 years to the day since Capt Scott and his team reached the South Pole, he was joined by the explorer's two granddaughters Dafila Scott and Nicola Starks.
Adventurer Ranulph Fiennes and Prince Albert of Monaco, who has a strong interest in polar exploration, were also amongst the 100 guests.
The event was in aid of the Scott Polar Research Institute, University of Cambridge.