The director of communications post has been vacant since the departure of Colin Douglas to Transport for London last year.
Douglas has since quit TfL and is now director of communications at the Audit Commission (PRWeek, 1 March)
A Sport England spokeswoman said the appointment of its top PRO was delayed until Moffett was in post.
Priorities for Munro will be to handle PR for Sport England's attempts to speed up the start of the rebuilding of Wembley Stadium.
Other PR initiatives include promoting the Commonwealth Games in Manchester this summer.
The Queen's Jubilee high-tech baton began its worldwide journey to promote the event, at a launch ceremony attended by athletes at Buckingham Palace this week.
Wembley is a concern as Sport England has ploughed £120m into the project, £20m of which will have to be returned if an athletics track is not included in the final plans.
A decision on the project has been stalled while auditors review how much money has been spent so far. The auditors were called in following criticism of the procurement procedure from Rodney Walker, chairman of Wembley National Stadium Ltd.
Munro is also tasked with finding new ways to better position sport as central to the wellbeing of the country.
Munro said: 'We've covered some big stories around the world, but I wanted to do something more corporate, more strategic and take my career a step further'.
Munro joined ITN 12 years ago, and has been head of sport for the past four. He has overseen coverage of the 2000 Sydney Olympics and the 1998 World Cup.