Singh joined the National Magazine Company's weekly celebrity magazine Reveal as assistant editor (celebrity) just a year ago.
Before this he was showbiz reporter at News of the World for eight years, where he had 52 front-page splashes and won the 2004 British Press Award for showbusiness reporter of the year.
A senior celebrity PRO said: ‘Singh has a long-standing relationship with The Outside Organisation’s CEO Alan Edwards and a great contacts book, so this move would make sense. He would bring a lot of value to an agency.’
In May, the agency hired four senior consultants including Neil Wallis, former executive editor of the News of the World.