The sponsorship has been running since 1986 and the new contract will allow Cadbury to take advantage of the longer running length of sponsorship breaks permitted by Ofcom to start from this year. The change increased the length of sponsorship breaks during programming from five to 10 seconds.
Running around all episodes of the soap on ITV channels, the £10m-a-year deal is the largest in Europe, according to Gary Knight, brand partnerships director at ITV Sales.
It was negotiated between Knight and Andy Roberts, executive buying director at Starcom UK.
A Cadbury spokesman said: "Cadbury and ITV will explore innovative ways in which we can both exploit the sponsorship further, although it is too early to say what form these will take at this stage."
This may refer to a possible extension to the 'Coronation Street' previews and bitesize content that ITV recently started distributing via mobile and interactive TV.
ITV has also found a sponsor for 'Celebrity Fit Club' on ITV1 and ITV2. Ryvita's deal was secured by Alliance, ZenithOptimedia's sales division.
In another deal, 'Dancing on Ice' on ITV1 and ITV2 will be sponsored by Goodfella's Solos frozen pizzas. The deal was negotiated by ZenithOptimedia.
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