The plans for the 1971 Census were the most ambitious to date. The development of computer processing unlocked significant increases in the volume and detail of output. Because of public concern about the privacy of data held on computers, the British Computer Society (BCS) offered to carry out an independent review of IT arrangements shortly after the 1971 Census. This was agreed and the BCS was invited back to carry out similar reviews before the 1981 and 1991 censuses.
Similarly for the 2011 census, Scotland’s Registrar General has assured the public that this count is set to be the most secure in the country’s history, with one of the UK’s leading independent auditors commissioned to review our security arrangements.