WillKat warn paps they're not Lady Diana

Prince William is embarking on a "zero tolerance" policy towards the paparazzi which will see him take immediate legal action if he feels his or Kate Middleton's privacy is breached in the run-up to their wedding.

The Prince intends, if necessary, to launch an early test case as part of a campaign to ensure he and his fiancée do not suffer the same levels of intrusion as his late mother, Diana, Princess of Wales.

According to friends, William and Middleton will instruct Gerrard Tyrrell, a leading privacy lawyer, as soon as they consider a photographer oversteps the mark during their engagement. William has said that he will consider both criminal and civil action depending on the nature of any intrusion.

The Prince, 28, has promised his fiancée's father, Michael, in the past that he will protect his daughter from the media. He is believed to have reiterated this promise when he formally asked him for his daughter's hand in marriage.