According to BBC News, letters have been handed out by Norfolk Police to people around the estate reminding them that Kate, William, George and Charlotte have a reasonable expectation of privacy at Anmer Hall, as it is on the private Sandringham Estate.
The letter – published by BBC News – urges people to respect the couple's privacy and that of their young children, especially when it comes to taking pictures of them going about their daily life on the estate.
A rep for Kensington Palace said: "The warm-hearted and understandable interest in the Royal Family and the Duke and Duchess of Cambridge needs to be balanced with their right to private family life - this is especially important for a family with very young children.
"This is a letter given by police to individuals found operating on or around the Sandringham estate, including Anmer, on behalf of the royal household. It reminds them of their responsibilities and the rights of the estate."
Kate and William arrived at Anmer Hall on Wednesday with their newborn daughter Princess Charlotte - born on Saturday - and her elder brother Prince George. They are expected to stay there for several weeks.
Anmer Hall was a gift to Kate and Wills from The Queen following their wedding in April 2011. It was recently refurbished to the couple's tastes and is said to include a swimming pool and tennis court.
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