Mandelson firm worked for campaign critics say would hinder Post Office-style lawsuits

Exclusive: Litigation such as that spearheaded by Alan Bates could become harder if advice from senior figure at Labour peer's Global Counsel given effect

The advisory firm founded by Peter Mandelson has worked for a campaign that critics say would stifle mass lawsuits such as that taken recently by post office operators against the Post Office.

The Labour peer, who has advised Keir Starmer, serves as president of Global Counsel, a strategic advisory company that he established and part owns.