Elfyn Llwyd MP, who led a parliamentary inquiry on stalking, accused prosecutors of "undercharging" and called for a change in culture in the CPS and police, claiming stalking is too often treated as a domestic issue.
The Plaid Cymru Westminster leader said charging lesser offences often ends with a "slap on the wrist" and do provide justice for victims.
"We need to so make sure prosecutors take this very serious offence as they should because it is a considerable area of concern." Llywd said.
More top news
Showers continue to affect eastern areas throughout tomorrow and, later in the day, also across Northern Ireland.
A white police officer has been charged with murder after the shooting of an unarmed black man in the United States.
The actress says she has been alerted to "cruel practices" involved in producing the Birkin, which was named in her honour 31 years ago.