You asked
How many people were prosecuted for not filling in census forms following the 2011 national census?
We said
Thank you for your request for information about non-compliance procedures relating to the 2011 Census.
As a result of non-completion of the 2011 Census form, the Crown Prosecution Service took 286 cases to Court; 270 of these cases resulted in guilty convictions. Further information about non-compliance and prosecutions following the 2011 census can be found in chapter 3 of the 2011 Census General Report.