As expected, since the route launched the majority of grants (62%) were to BN(O) and/or Hong Kong Special Administrative Region (HKSAR) passport holders, with a further 37% being Chinese passport holders (many of whom will have been living in Hong Kong). For main applicants, 90% were HKSAR/BN(O) passport holders. For dependants, 77% were Chinese passport holders, and 21% were HKSAR/BN(O) passport holders.
https://www.gov.uk/government/statistics/immigration-system-statistics-year-ending-march-2023/how-many-people-come-to-the-uk-each-year-including-visitors