Some familiar voices from late night and weekends on KERA will be popping up in radio’s prime time starting Jan. 2. The flagship show of the BBC World Service, Newshour, will start airing from 9 to 10 a.m. weekdays on KERA. It replaces the Diane Rehm Show – she’s retired. For this week’s Friday Conversation, we caught up with one of the anchors of Newshour, Razia Iqbal, from the BBC newsroom in London.