Officers were called to her prosaic in Bramham Gardens, South Kensington, during 13:40 GMT. A lady in her 40s was found passed during a scene, a Met Police said.
The genocide is being treated as unexplained.
The Prince of Wales and a Duchess of Cornwall expelled a matter in that they pronounced they were “deeply saddened and a thoughts are so most with a family”, following a genocide of their tighten friend.
Palmer-Tomkinson rose to celebrity in a 1990s as a hard-partying “it girl” and put her name to several columns chronicling her glamorous lifestyle.
She was diagnosed with a swelling final Jan after returning from a skiing trip, and strike behind during critics who blamed her thin health on her well-documented heroin addiction.
Later in her career she seemed on existence TV array I’m A Celebrity… Get Me Out Of Here! in 2002, as good as several other TV shows.