Rose’s MP, Dame Meg Hillier, said she had raised the case with the Foreign Office.
“The outcome of this case could further discourage women from reporting sexual assaults in Hong Kong, which is already an issue indicated by the low level of sexual assault reports,” she said.
“It took two years for the Hong Kong authorities to bring Isabel Rose’s case to court for a conviction.
“After reporting a serious sexual assault in Hong Kong, her case was dismissed and instead she faced a counter accusation of blackmail,” she added.
The Foreign Office said: “We are supporting a British woman in Hong Kong and are in contact with the local authorities.”
On International Women’s Day, a group of supporters printed banners of Rose and marched through the streets of central London.
Inside Tai Lam Correctional centre, Rose awaits sentencing. Bell is calling for support from the British government.
“Carrying that and not saying anything would have destroyed her more,” she said.
“She is in prison. But she is in power no hiding, no shame,” she said.