allegiance australian nationality law barbados nationality law belonger status british empire british overseas territories citizen british overseas citizen british nationality law british nationality law and the republic of ireland british protected person british subject canadian nationality law channel newsasia citizenship commonwealth citizen commonwealth of nations constitution of singapore diplomatic immunity federation of malaya flag of singapore history of british nationality law history of canadian nationality law immigrant workers in singapore immigration and checkpoints authority indefinite leave to remain indian nationality law jus sanguinis jus soli malaysia malaysian citizenship maltese nationality law national registration identity card nationality law naturalization new zealand nationality law samoan nationality law self-governing colony singapore singapore in malaysia singapore passport south african nationality law tongan nationality law uk ancestry entry clearance united kingdom