Fewell, who introduced the Snowmail daily e-mail briefing to Channel 4 News viewers, told PRWeek he was keen to increase interactivity on the programme.
'We will look at what we can do to improve the look, the way we tell stories to viewers. Technology is moving on, and we will use interactive and online resources to involve the audience in stories,' he said.
He said Channel 4 News would also look at more stories involving the privatisation of government functions. 'As more hospitals are built under PFI and the tube deal goes ahead, that is one area we will focus on,' he said. 'We are not unhappy with the balance in the programme, but that is not to say it doesn't change and evolve.'
The hour-long programme, which now goes out seven nights a week at 7pm, has a reputation for in-depth coverage and increased its audience share by 50 per cent following 11 September.
Fewell, who reports to editor Jim Gray, came to Channel 4 News as programme editor in 1998. He started his career as a BBC local radio trainee reporter in 1987 before joining The World at One as duty editor four years later.
He became assistant editor of The World This Weekend in 1993, then deputy editor of The World at One from 1994-1997. He was a launch editor on BBC News 24 in 1997-1998 and worked on Newsnight and the One O'clock News for BBC TV.
Barron is joining Tonight, ITV's current affairs flagship, after four years at Channel 4 News. He will report to editor James Goldston. David Mannion, the former editor of the programme, took overall charge of ITV News last month.
Barron was programme editor of BBC TV's Newsnight for three years, before which he was producer.