The move comes just two weeks after the newspaper’s high profile decision to back Conservative Party leader David Cameron as the next Prime Minister.
It is the second major coup for Portland after former Conservative MP Michael Portillo joined the agency’s newly created ‘advisory council’ at the end of September.
Both appointments will strengthen the former ‘New Labour’ agency’s Tory contacts. Portland is headed by Tim Allan, Downing Street’s former deputy comms director under Tony Blair.
The news was the talk of last night’s London Press Club Ball, attended by senior journalists and PROs. News International had released details of his move internally hours before the ball commenced.
Pascoe-Watson, who was sat at The Sun’s table with new editor Dominic Mohan, declined to give more detail on his move into PR, deferring to a prepared statement.
The statement read: ‘I was thrilled to have played a key role in switching The Sun’s support to David Cameron...Now I’m looking forward to using my experience to help Portland’s clients make sense of a new political and media age.'
He will write a political insights column for the former agency’s clients, as well as advising on media and public affairs issues.
Pascoe-Watson has been at The Sun for 22 years, joining as a junior news reporter and rising to political editor, a position he has held for the last four years.
He led The Sun’s coverage of the Iraq War from US Central Command in Qatar in 2003, and was one of the first political journalists to back Cameron to lead the Conservative party.