Nevertheless, we remain committed to the people of Hong Kong and to supporting BN(O) status holders and their family members who choose to come to the UK. After five years in the UK, those on the BN(O) route can apply for settlement, and after a further 12 months, they can apply for British citizenship under section 4(2) of the British Nationality Act 1981. Those applying under this section are not required to demonstrate the knowledge of English and knowledge of life in the United Kingdom requirements, and so are not required to pass the Life in the UK test or have an English language qualification in the same way as those applying for naturalisation. Information on applying for citizenship is available at:
https://www.gov.uk/british-citizenship/how-to-apply.