Duke's helicopter friends buzz society wedding MoD spokesman said: "It was returning from a rescue mission. It has been dispatched to the Lake District for an incident with a male climber. The individual was taken to hospital and had been dropped off there. The helicopter was flying from the hospital back to RAF Boulmer. It had to fly past Alnwick. She declined to comment on claims from witnesses that the helicopter had circled the castle. Earlier well-wishers lined Alnwick's Bailiffgate, which leads from Alnwick castle - the Percy family seat, used as Hogwarts in some of the Harry Potter films - to St Michael's parish church, cheering and waving the guests. In the church, as the Bishop of Newcastle conducted the service, was virtually every friend of the younger members of the Royal family. The ceremony was the nearest thing there will be this year to a reunion for the guests at the Duke and Duchess of Cambridge's wedding two years ago. Lady Melissa, 26, wore a Bruce Oldfield dress. Her sister, Lady Katie Valentine, was matron of honour, while the other principal bridesmaid was Chelsy Davy, 27, the former girlfriend of Prince Harry. Prince Harry's new girlfriend, Cressida Bonas, 24, was among the guests, wearing a blue and white maxi dress and blue sequinned jacket. Other guests included Princesses Beatrice, 24, and Eugenie, 23 and Jecca Craig, a former girlfriend of the Duke of Cambridge. Pippa Middleton, 29, wore a floral peplum dress. The Duchess of Cambridge's sister is a close friend to the Percy family, having shared a flat while at Edinburgh University with George, Earl Percy, the bride's older brother. She appeared to attend without her boyfriend Nico Jackson, 35, but many of her other close friends were there, including Holly Branson, 31, the daughter of the Virgin billionaire Sir Richard. Other guest included Natalie Pinkham, 34, the Formula One television presenter, with whom Prince Harry was once romantically linked.