Jake Kanter International TV EditorViacomCBS Networks UK has named Sarah Rose, Channel 4’s chief consumer and strategy officer, as its new chief operating officer.Rose’s appointment comes after Deadline revealed earlier this month that Paul Dunthorne, the long-time Channel 5 executive, was stepping down as ViacomCBS’s COO and EVP UK of Northern and Eastern Europe.She will report into Maria Kyriacou, president of ViacomCBS Networks UK and Australia, and will have oversight of all UK business