Unilever has signed a major new supply deal with chocolate giant Barry Callebaut.

Under the terms of the deal, Unilever will double the volumes of chocolate it takes from Barry Callebaut.

Following the agreement, 70% of the chocolate Unilever uses will come from the company. The duo already co-operate on Unilever’s Magnum ice cream brand.

Barry Callebaut is the world’s largest cocoa processor. The company said it would invest £15m on its Banbury facility to help meet the extra production needs.