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Coincident full censuses have taken place in the different jurisdictions of the United Kingdom every ten years since 1801, with the exceptions of 1941 (during the Second World War) and Ireland in 1921. Simultaneous censuses were taken in the Channel Islands and the Isle of Man, with the returns being archived with those of England. In addition to providing detailed information about national demographics, the results of the census play an important part in the calculation of resource allocation to regional and local service providers by the governments of both the UK and the European Union. The most recent UK census took place in 2011.
Contents
History
Tax assessments (known in the later Empire as the indiction) were made in Britain in Roman times, but detailed records have not survived. In the 7th century AD, Dál Riata (parts of what is now Scotland and Northern Ireland) conducted a census, called the "Tradition of the Men of Alba" (Scottish Gaelic: Senchus fer n-Alban). England conducted its first formal census when the Domesday Book was compiled in 1086 under William I for tax purposes.
Distinct from earlier, less inclusive censuses (e.g. for religious purposes), national decennial censuses of the general population started in 1801, championed by the statistician John Rickman. The censuses were initially conducted partly to ascertain the number of men able to fight in the Napoleonic Wars, and partly over population concerns stemming from the 1798 work An Essay on the Principle of Population by Reverend Thomas Robert Malthus. Rickman's twelve reasons – set out in 1798 and repeated in Parliamentary debates – for conducting a census of Great Britain included the following justifications:
Regular national censuses have taken place nearly every ten years since 1801, most recently in 2011; other partial censuses have been made on some of the intervening fifth anniversaries. The first four censuses (1801–1831) were mainly statistical: that is, mainly headcounts, with virtually no personal information. A small number of older records exist in local record offices as by-products of the notes made by enumerators in the production of those earlier censuses; these might list all persons or just the heads of households. The 1841 Census was the first to intentionally record names of all individuals in a household or institution.
The Census Act of 1920 provides the legal framework for conducting all censuses in Great Britain (Scotland, England, and Wales). The primary legislation for Northern Ireland was introduced in 1969. Before this legislation, it was necessary to have a separate act of parliament for each census. Britain was also responsible for initiating and co-ordinating censuses in many of its overseas colonies.
Because of the disruption caused by the Second World War, there was no census in 1941. However, following the passage into law on 5 September 1939 of the National Registration Act 1939, a population count was carried out on 29 September 1939. The resulting National Register was later used to develop the NHS Central Register. Censuses were taken on 26 April 1931 in Great Britain, but the returns for England and Wales were destroyed in an accidental fire during the Second World War.
On 24 April 1966, the UK trialled an alternative method of enumeration – long form/short form. Every household was given a short form to complete, while a sample of the population was given a long form to collect more detailed information. The short form was used for the population count and to collect basic information such as usual address, sex, age and relationships to other household members. This was the first and only time that a five-yearly census was carried out in the UK.
England and Wales
The British government undertakes the census for policy and planning purposes, and publishes the results in printed reports and on the website of the Office for National Statistics (ONS). A number of datasets are also made available. Public access to individual census returns in England and Wales is normally restricted under the terms of the 100-year rule (Lord Chancellor's Instrument no.12, issued in 1966 under S.5 (1) of the Public Records Act 1958); until recently, returns made available to researchers were those of the 1901 Census.
Some argue that ministers and civil servants in England and Wales made no attempts to strictly enforce the 100-year census closure policy until 2005, five years after the Freedom of Information Act 2000 was passed, which, they argue, effectively abolished the 100-year rule. However, personal information provided in confidence is likely to be exempted if disclosure could result in successful prosecution for breach of confidence. In exceptional circumstances, the Registrar General for England and Wales does release specific information from 70-, 80-, or 90-year-old closed censuses.
Scotland
National censuses in Scotland have been taken on the same dates as those in England and Wales, but with differing legislation, governorship and archiving arrangements. The 2001 census was the first to be taken under full domestic control, while all preceding censuses since 1861 had been under the control of the Registrar General for Scotland.The 19th-century Scottish censuses were all released after 50–80 years of closure, while the 1901 and 1911 censuses was made available to the public after their 100th anniversaries. Unlike the censuses for England and Wales, there was a statutory bar on early release of the 1911 census details.
Ireland and Northern Ireland
Irish censuses from before 1901 have not generally survived to the present day, due to a combination of official incompetence (the 1881 and 1891 returns were pulped before they could be transcribed into books), non-retention (1861 and 1871), and a fire during the Irish Civil War in 1922. The 1901 and 1911 censuses for Ireland (all of which was then part of the UK) have been available for inspection since 1960 – they were made available earlier than the other British records, since Irish law is different on this matter. No census was taken in 1921 due to the disruption of the Irish War of Independence. The first census taken in the Irish Free State (now the Republic of Ireland) was in April 1926; the first Northern Ireland census occurred at the same time. No census took place in Northern Ireland in 1931.
Coverage
In 2001, the census form was completed by 94 per cent of the population in England and Wales, with a further 4 per cent identified by the census enumerators, though the results still represented 100 per cent of the population through the use of cross-matching with a follow-up survey. The Census Act 1920 (as amended) legislates a fine of up to £1,000 for those who refuse to complete their census forms.
In some censuses, significant numbers of people intentionally did not participate for political reasons. In 1911, the Women's Freedom League, a suffragette organisation campaigning for female suffrage in the United Kingdom, organised a boycott of the census. They encouraged women to go to all-night parties or to stay at friends' houses to avoid the census. In 1991, many people again avoided the census, which was conducted during the time of the poll tax debate, in case the government used it to enforce the tax. It was estimated that up to one million people were not counted by the 1991 census due to such evasion.
Criminal law
Under section 8 of the Census Act 1920, whoever refuses or neglects to comply with the census, makes a false declaration, makes, signs, or delivers a false document, or causes the same, or refuses to answer, or gives false answers, shall be liable on summary conviction and face a maximum fine of £1,000. Exceptions exist for refusing or neglecting to respond to questions about religion, as stipulated by the Census (Amendment) Act 2000.
Data sets
Traditionally, outputs are released in the form of tables of counts at various levels of geography. However, microdata, known Samples of Anonymised Records (SARs) are UK data-sets consisting of samples of individual records from national censuses. These very large datasets resemble survey data and are used for a range of applications by social scientists and policymakers.
The first SAR was released in 1991. In 2001, the SAR system was extended, and it is anticipated that there will be SAR files from the 2011 census.
2001
The 1851 census included a question about religion on a separate response sheet, whose completion was not compulsory. But the 2001 census was the first in which the government asked about religion on the main census form. New legislation was enacted through the Census (Amendment) Act 2000 to allow the question to be asked, and to make its response optional. Perhaps encouraged by a chain letter that started in New Zealand, 390,000 people entered their religion as "Jedi Knight", with some areas registering up to 2.6% of people as Jedi. Thus, "Jedi" was the fourth-largest reported religion in the country.(See: Jedi census phenomenon).
2011
The UK's most recent national census took place on 27 March 2011. Several identity and status options were included for the first time in the census, including options relating to civil partnerships. The first set of data to be released from this census (basic counts of population by age and sex) was made available in July 2012, with the remainder of the tables following thereafter.
2021
The next UK census is scheduled to take place in March 2021. However, on behalf of the Government, the UK Statistics Authority has initiated a research programme, called Beyond 2011 to investigate a range of alternative options to conducting a UK-wide census in 2021.