Chinese nationality
The vast majority of British Nationals (Overseas) are ethnically Chinese and were automatically granted Chinese nationality at the transfer of sovereignty in 1997. Individuals who hold Chinese nationality concurrently with any other nationality, including BN(O) status, are treated solely as Chinese nationals under Chinese nationality law. Consequently, most BN(O)s do not have access to British consular protection while in Hong Kong, Macau, or mainland China. Additionally, BN(O)s who are Chinese nationals must use a Mainland Travel Permit to enter mainland China.