United Kingdom - Passport & Nationality - British Citizenship by Descent (UKM Autoloss)
Anti-gender discrimination legislation was enacted in 2010 to allow registration as a British citizen for an applicant born before 1983 to a UK-born mother.
However, in rare circumstances, such a registration was not possible if the Automatic Loss provisions of the Independence arrangements of your own country of birth restricted your rights to British nationality. Your birth before independence of the British territory meant that you lost rights to British nationality unless your father or paternal grandfather was born in the UK.
In 2023, this unfairness was finally rectified and an application to register as a British citizen at discretion should now be possible.