The Victims Commissioner for London has described the sentence handed down to her stalker of 19 years as “an insult”.
In October Elliot Fogel, 47, was found guilty for a sixth time of breaching a lifetime restraining order designed to stop him contacting Claire Waxman.
He was given a 16-month sentence but was released immediately as he had spent time in custody awaiting trial.
The Home Office said it takes its response to stalking “extremely seriously”.
In an exclusive interview with BBC Newsnight, Ms Waxman said she was “absolutely shocked” by the punishment and is calling for a review of stalking legislation because she believes it isn’t working for victims.