British Nationality could be obtained through your birth, or through the birth of any one of your parents or grandparents, in Guyana. This arises because of Britain's relationship with British Guiana and its Colonial history.
To determine what form of British Nationality you might have, an analysis of your family's history must be done, and then applying it to the Nationality laws of Guyana that were passed over the years.
STATUS OF GUYANA
Between 1814 and 31.12.1948, Guyana fell within the Crown’s Dominions as British Guiana.
From 01.01.1949 until 25.05.1966, it was within the UK and Colonies as British Guiana.
From 26.05.1966 until the present day, it was an independent Commonwealth country.
Click here for more information on the status of Citizen of the United Kingdom & Colonies (CUKC), a status achieved by birth in the Colony.