Ms O’Reilly, 55, said that a member of the production team on BBC One’sCrimewatch Roadshow “appeared to be on a mission to humiliate.”
He allegedly called her ‘Hayley’, comparing her looks to those of Hayley Cropper, a transsexual character in the soap opera Coronation Street.
Ms O’Reilly has written a formal 1,800-word letter to Jessica Cecil, the BBC’s head of complaints, claiming that apologies and offers of work following her 2011 tribunal victory were “clearly just a PR damage-limitation exercise.”
She said she had no option but to leave the BBC in January, nine months into a three-year deal.
Ms O’Reilly had hoped she would be welcomed back after winning her tribunal case. She had gone to an employment tribunal claiming age discrimination after she was dropped from Countryfile in 2009 and replaced by younger presenters.
After the tribunal ruling, Mark Thompson, then the BBC director-general, said he hoped that the case would be regarded as a “turning point” and “important wake-up call” for the corporation.
In July, after Ms O’Reilly had left the BBC for the second time, Mr Thompson’s newly-nominated successor George Entwistle wrote to her inviting her to discuss future projects with him.
Mr Entwistle, who began his new £450,000-a-year role on Monday, used his first week in office to declare he wanted more women on television and radio. Asked about Ms O’Reilly, Mr Entwistle said: “If she comes up with a brilliant idea, I would love to have her back.”
In her letter, however, Ms O’Reilly complained of a lack of radio work and described her alleged treatment when she co-presented Crimewatch Roadshow, which was broadcast in the summer of 2011.
She said it was "very quickly clear that I was not going to receive fair treatment".
She claimed one member of the production team seemed determined to humiliate her.
“He was cueing me as ‘Hayley’ during a live broadcast and laughing. When we came off air he said it was because I reminded him of Hayley Cropper, a transsexual character in Coronation Street.
“I objected but the following day a picture of Hayley Cropper had been stuck to my sound pack.”
She added: “Despite the BBC saying publicly that it accepted the findings of the tribunal, what happened privately tells a very different story.”
A BBC spokesman said: “As recently as this week George Entwistle said he would welcome Miriam back to the BBC if she had a great idea for a programme.”
Referring to the tribunal ruling, the spokesman added: “The BBC has apologised to Miriam and made sure we learned from it.”
Article from The Telegraph