The first man to be convicted of trafficking females out of the UK, in a case involving two Nigerian girls, has been jailed.Anthony Harrison, 32, was sentenced to 20 years for four trafficking offences as well as two of false imprisonment.The charges related to teenage victims who alleged they were subjected to witchcraft and violence.Judge Philip Shorrock said the sentence was being imposed "to deter others who are tempted by this terrible trade", and "to reflect public disgust".John Brain reports.