Last week, reports suggested that the pair were being axed as presenters of the breakfast series, after failing to help the show compete against its BBC rival in the ratings.
Announcing their exits, the broadcaster said that both Bleakley and Chiles were stepping down from their roles in order to focus on their peaktime commitments.
Peter Fincham, ITV director of television, said: "Adrian and Christine are both superb presenters. They have worked tirelessly to help establish Daybreak on ITV1 and they leave the show at a point when ratings have recently seen their biggest year-on-year increase.
"Adrian has had a hugely positive reception as the host of ITV's live football coverage since he joined us for the 2010 World Cup and I'm pleased that he will be at the helm of the UK's biggest free-to-air football offering, and will continue to present his successful That Sunday Night Show."
Fincham added: "I'm delighted that Christine will join Phillip Schofield as the host of one of our biggest entertainment hits, Dancing on Ice, as well as our Christmas event, Text Santa - and as we look ahead to next year we will be working with her on two exciting new peaktime projects."
As well as hosting Dancing on Ice, ITV also confirmed that it is working with Bleakley to develop a new peaktime factual entertainment challenge show, as well as a home renovation programme.
ITV had previously pledged its support to the duo, who both joined the channel last year. However, speaking earlier this year, ITV chief executive Adam Crozier admitted that the GMTV replacement had underperformed.
Daybreak will announce the new presenters "in due course".
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