On the morning of Thursday, February 14 three years ago, a journalist from a national newspaper rang and asked me whether I’d heard that Wen Zhou Li had been arrested. He had seen a film series I had made about gifted young musicians at Chetham’s School of Music in Manchester and which featured Wen Zhou, an acclaimed Chinese-born violin teacher, who had worked at this prestigious school for 20 years. Was I shocked, I was asked, that he was now being accused of raping and indecently assaulting a pupil?

I was more than shocked. I was incredulous, disbelieving and horrified. I rang Wen Zhou immediately. He broke down in tears and called me back later. Yes, he had been arrested and told by the police that he was being investigated, as a former pupil had made a complaint accusing him of sexual assault when she was a teenager.

“Tamasin, the social services have taken my children,” he told me. “I’m fighting for my life.”

It has taken until March this year for his nightmare to end.