Prince William has thanked fans who wished him a happy birthday.
Blog Gert’s Royal Replies tweeted William’s thank-you card, which features a photo of the Duke of Cambridge from his 2017 interview with GQ.
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“The Duke of Cambridge is most grateful to you for writing as you did on the occasion of his 37th birthday.
“It really was most thoughtful of you and His Royal Highness sends you his warmest thanks and best wishes.”
William and wife Kate Middleton have just returned home with their family following a break at the Queen’s estate in Balmoral.
The Duke and Duchess of Sussex flew in to Norwich Airport at 3.26pm local time with Prince George, Princess Charlotte and Prince Louis in tow.
Balmoral has has served as a private retreat for the British royals for over 150 years.