Cornwall - (Reuterus): Samantha's waters broke shortly after 8am just as the waxing full moon made a conjunction with Neptune, mythical god of the seas.
The Camerons, holidaying in rain deluged Cornwall, had to make a quick dash to Truro's Royal Cornwall Hospital where midwives, obstetricians and the usual neonatal crew had been on standby since Sunday.
"The Prime Ministerial rapid response motorcade made sure
Mrs C was ushered was into the birthing suite on time," a hospital spokesperson commented, "where hours of useless pushing and shoving were given the heave-ho in favor of a C-section delivery."
Shortly after midday a healthy 6lb 1oz baby girl arrived, kicking and screaming 'like a typical little Virgo' on her debut.
No name has been announced as yet but there have been reports that bookies immediately slashed the odds to 5/1 for the couple's fourth child to be named Cherie "after the mother-in-law".
Margaret Thatcher is 91.