The Duke of Edinburgh has arrived in Canada where he will present a regiment with a new ceremonial flag.
Today, Prince Philip will present new colours as colonel-in-chief to the 3rd Battalion, The Royal Canadian Regiment in Toronto.
Philip, 91, will return to England on Sunday.
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Ex-Spitfire pilot Allan Scott, 94, said he was told off by the Queen when he first met her in 1943 when she was just 16.
Last minute preparations are going on at the Church of St Mary Magdalene where Princess Charlotte will be christened.
Princess Charlotte is being christened on Sunday at Sandringham in Norfolk in only her second public appearance since she was born.