Queen Elizabeth II and Prince Philip.

It takes two ... the Queen and Prince Philip take a salute as the Guards march past Buckingham Palace after the Trooping The Colour parade in London at the weekend. Photo: AP

LONDON: With a smile to match her ''sunray'' dress, the Queen looked delighted to have Prince Philip back by her side as she attended her official birthday parade.

A week after being discharged from hospital, Prince Philip appeared to be back in rude health, accompanying the Queen on his first public engagement since receiving treatment for a bladder infection.

But Buckingham Palace was taking no chances with Prince Philip, who spent last week convalescing.

While he and the Queen had been due to travel to the ceremony at Horse Guards Parade in an open-topped ivory-mounted phaeton carriage, they instead made their way in the covered glass coach.

The palace said the move was to protect the Prince from the ''unpredictable weather''. The coach, built in 1881, was first used by the Queen and Duke on their wedding day in 1947.

The Queen and Prince Philip, who turned 91 last Sunday, were joined by younger members of the royal family, including Prince William, his wife, Kate, and Prince Harry for the pageant.

Starting today, the parade ground will be turned into an Olympic venue, and covered in sand for beach volleyball.

Telegraph, London; Deutsche Presse-Agentur