Originally Posted by MapleLeaf
Right of residency to the UK means that if you have your grandmother's birth certificate, your parents birth certificate, your birth certificate and marriage certificates proving that you are indeed the grandchild of the person born in the UK, then the UK will let you take up residency and work without difficulty.
Note the italicised requirement. Until recently, the U.K. government didn't look kindly on the rights of ba$tard$.