Those such as Nicholas Soames MP who spoke out in support of Prince Charles during the media-led 'War of the
Waleses' stay within the circle.
Invariably, many of the loyal royal exes also find their phone calls put through by
the Palace switchboard.
Koo Stark has continued to maintain her discretion in interviews published since her early 1980s romance with Prince Andrew.
However, friends can't always be relied upon to be quite so discreet.
The jury is still out in Denmark, where Crown Princess Mary has faced
not a little embarrassment thanks to the loose-lips of her best friend and bridesmaid,
Amber Petty.
She was deemed to be an unsuitable choice as godmother to Mary and Frederiks
children, prompting Amber to go public with her disappointment.
Now a radio personality in her Australian homeland, Ms Pettys 'done a Fergie' by telling
stories about her own private life, such as her delight at finding herself
enjoying a passionate kiss with a younger man during a New Years party.
While maintaining this tie to her pre-Frederik days helps keep Mary sane and
connected to her pre-royal self, some might question whether its all that
sensible?