Just to confuse things.
As I understand these codes they were placed on them by the local benefits officer of the
day, when someone updated their status, such as going into an institution or getting
married. When issuing an identity card the register would have been consulted. These cards
were issued until 1952, to the under 16's changing to an adult one when the person
reached the voting age. I believe they were still used for reference purposes into the
The identity card was a key that could be used to access all the benefits of the state,
from rationing to voting to NHS services. The individual numbers it generated became
National Health Service numbers in 1948, and remained in use into the 21st century.
The 1939 Registration Districts can be found here.
The Office for National Statistics have a form A1 which is a card index originally made up
from the information held at Local Registration Offices and sent to Southport at the time
National Registration ended in 1952. The cards contained information relating to the
whereabouts, name, etc, of persons in 1952 which was not necessarily the same as in 1939
if they had moved house, got married, etc. These cards were added to and/or amended right
up until 1991 in respect of persons born before 1952.
GEDmatch kit no: A585504