The hacking of Sara Payne's phone by News of the World would represent "the ultimate betrayal

The hacking of Sara Payne's phone by News of the World would represent "the ultimate betrayal", Tom Watson has said.

The MP, who sits on the Culture and Media Committee in the Commons, has led a campaign against phone hacking.

The mother of murder victim Sarah Payne has been told she may have been the victim of phone hacking, her charity has said.

Police told Sara Payne her details were in notes compiled by private detective Glenn Mulcaire, who was used by the News of the World, which championed her Sarah's Law child protection campaign.

Rebekah Brooks, who left her role as News International chief executive in the wake of the hacking scandal but denies having had any knowledge of the practice while at the paper has said in a statement: "These allegations are abhorrent and particularly upsetting as Sara Payne is a dear friend".