The census of 1841 was the first to record more detailed
information. It is thus the earliest census generally used
by family historians.
You can use the census 1841-1901 at the Family Records
Centre in central London. Follow this link to
find out more.
In 1841 the full name, sex, age (rounded down to the nearest
five, if aged over 15) and occupation of each person living
in the household was recorded. In 1851, questions were added
about the relationship of each individual to the head of
the household and whether any member of the household was
blind or dumb; also more detailed information on place of
birth was recorded.