Prince William sends thank-you notes to fans who wished him a happy 37th birthday

Prince William is never off the clock, even as he’s holidaying with Queen Elizabeth in Scotland’s Balmoral Castle.

Royal fans will be pleased to know that Prince William is continuing to participate in a key royal tradition, which is responding to old-fashioned mail.

Especially when the letter in question is a congratulatory letter.

Despite Prince William celebrating his 37th birthday in June, he is just getting back to fans who have sent him well-wishes by mail.

Gert’s Royal Replies, a royal blog, explained that they had received a reply from the Prince.

Gert’s also pointed out that the photo card that was sent was used on Prince William’s 2017 and 2018 birthday replies.

According to the site, “it is quite typical for Clarence House to reuse photos for multiple events, especially the adult's birthdays.”

The message on the back of the card reads:

“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.”

Prince William isn’t the only one to send out thank you cards to those who send them letters. The Duke and Duchess of Sussex as well as Princess Eugenie and other members of the British royal family send them out after special events.

Scroll through the gallery to see some letters from the British royal family.