"Dear Sir/Madam, As you are aware, Anmer Hall is part of the Sandringham Estate, which is a private estate and whilst in residence, members of the Royal Family and their guests have a more than reasonable expectation of privacy.
There have in the past been a number of intrusions into the privacy of the Royal Family, which in the main have been as a result of professional photographers using long distance lenses, not only to observe the Royal Family, but also to photograph them going about their activities on the Estate.
Following warnings given to photographers and the photographic agencies involved, the position has greatly improved. However, we would remind you again of the position. The Sandringham Estate trusts that there will not be a need to take any further action other than bringing these points to your attention.
With the above matters in mind, we would reiterate the clear request for acts of harassment and breaches of privacy to cease.
Communications Secretary to TRH The Duke and Duchess of Cambridge."
's Sandringhamon estate on Wednesday.
The letter was distributed to the various outlets attempting to operate around the estate.
"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," a Kensington Palace spokesman told BBC News.
After their second child was born on May 2, the royal family made a public debut, allowing photographers outside of St. Mary's hospital to take pictures of Princess Charlotte when they first took her home.