Three men jailed for sexually abusing vulnerable student Gordon Holliday, 60, jailed for sexually abusing vulnerable female Three men have been jailed for sexually abusing a vulnerable female who described how their respective historical crimes had âtaintedâ her whole life. One of the men responsible for offending which happened about two decades ago during separate and unconnected incidents was the girlâs teacher. Mark Craster-Chambers, now aged 54, kissed her while she was a student who had just turned 16 at his South Cumbria school and engaged in further unlawful sexual acts with her. By that stage, the girl had been sexually abused as a 13-year-old by two other men – Gordon Holliday, now 60, and 63-year-old taxi driver Carl Morgan Donnelly.