Isabel Rose, 26, met the British man involved in the case in Thailand before linking up with him again in Hong Kong in January 2024, sharing a bed for a while, according to court documents.
The following month she had filed a rape complaint against the man, a banker working in the Chinese finance hub, leading to his arrest.
The accused man was subsequently released without charge, and instead Rose was charged with blackmail and perverting the course of justice. A district court issued a guilty verdict in March.
On Wednesday, judge Adriana Noelle Tse Ching handed Rose a six-year prison term, saying she had taken advantage of the man's "kindness, naivety, friendship and romantic interest" to blackmail him.
During the course of their acquaintance, after the man transferred 5,000 pounds (US$6,700) to her, Rose began asking for "escalating amounts of money", according to court documents.
