How well do you know the 1991 Census?

Having recently rediscovered my store of interesting stories from 1993, let’s start with this one triggered by the compilation of data from the 1991 Census.

According to the Office of Population, Censuses and Surveys, what did 21,000 people forget when filling in the form?

a. Their age
b. That there was a baby in the house, or
c. Their middle name?

Answer: (b).