Time, a new prison drama from the BBC, has started filming in Liverpool. The three part series will star Sean Bean and Stephen Graham. The series is written by Jimmy McGovern for BBC ONE and produced by BBC Studios. The series follows two different men in the British penal system. Mark Hebden (Bean) is a teacher in prison for the death of a man in an accident. Eric Reid (Graham) is a prison officer working in a understaffed prison trying to protect and care for those in his charge.