Queen Margarethe of Denmark, Crown Prince Alexander of Serbia and Princess Katherine, the Grand Duke and Duchess of Luxembourg, King Harald of Norway and Queen Sonia also attended.

BBC: Royal wedding: William greets fans ahead of wedding

Her household released a statement that her son Crown Prince Willem-Alexander will represent the family at the wedding, along with his wife Maxima.

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Ralph Latchana, of Wincheap Road, Canterbury, admitted at Canterbury Crown Court trying to kill Alexander Mackay, 66, in Wincheap in September.

BBC: Ralph Latchana given 15 years for Wincheap murder bid