Which Commonwealth citizens can qualify for right of abode?

Beyond British citizens, the right of abode extends to a limited group of Commonwealth citizens based on connections that existed before the 1983 nationality law changes.

The main routes are: being a Commonwealth citizen on 31 December 1982 with a parent born in the UK, and being a female Commonwealth citizen who was married before 1 January 1983 to a man who had the right of abode. You must also have remained a Commonwealth citizen since that date. These are narrow, historical provisions, so the supporting evidence is important.