Radcliffe joined digital entertainment channel E4 in 2000 and worked on its launch and developing it into one of the UK's strongest digital channel brands.
More recently, he has been orchestrating the launch marketing campaign for documentary channel More4, which debuts on October 10.
Prior to joining Channel 4, Radcliffe worked for creative agencies McCann Erickson and JWT.
In his new role, Radcliffe will manage a team of six on marketing campaigns for the main channel while reporting directly to Polly Cochrane, director of marketing.
He joins as Channel 4 rides high on a series of critical and ratings successes including 'Lost', 'Desperate Housewives' and 'Jamie's School Dinners'.
Cochrane said Radcliffe's experience should benefit Channel 4 as it turns completely digital.
"He will bring additional strategic and commercial skills together with brand-building experience in a multi-channel universe, all of which will serve Channel 4 well as we gear up for switchover," she said.
In addition, Cochrane is in the process of recruiting for a newly created post -- head of marketing digital channels -- with responsibility for E4, More4, FilmFour, multiplexed services and any new digital channels.
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This article was first published on brandrepublic.com