Dare beat MRM Worldwide and Lawton eMarketing in a pitch and will now create a website, online work and partnerships.
Magnum becomes the third piece of Unilever business Dare now works on in the UK. It also handles the Lynx/Axe and Bertolli accounts.
The ice-cream brand has used online marketing in the past: in 2004, MRM Worldwide created a microsite to support the sultry "Magnum five senses" campaign devised by its sister agency McCann Erickson.
Unilever's decision to appoint a digital agency follows a commitment to place increased emphasis on the internet as a brand experience and response channel.
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