Hershey and Ferrero on Wednesday revealed that they were weighing up whether to enter the bid battle for Cadbury, the rival UK confectionery company that is fighting off a £9.9bn hostile offer from Kraft Foods of the US. Representatives from Italy’s Ferrero flew to the US last week to hold talks with Hershey, said people close to the situation. But the talks were preliminary and no decision was made to form a consortium, they said.