My son is 12 years old, he was born in Canada. He is holding a Valid T4 Visa and BRP card. But recently I applied a Chinese passport for him with an alternative name and alternative birthday.
I used his Chinese Passport to apply for UK Visitor Visa recently which was refused. On the application, I did not declare his Canadian passport information as China is not allowed Dual citizenship. Also, on his Chinese passport, his birthplace is China (the only way I can apply for his Chinese citizen was to declare he was born in China).
Due to COVID-19, China revoked all Foreigner's visa to enter China, that's why I want to use a Chinese passport to let my son freely leave and return to China(all my family in China). I am deeply worried that next time when he arrives at Heathrow Airport, the Border Control offer will not let him entering UK with his Canadian Passport and BRP card. Moreover, I am worried about his next T4 Visa renewal (July 2021) will be refused. Is there anything I can do to avoid that?