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United Kingdom census

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United Kingdom census

Coincident full census have taken place in the different jurisdictions of the United Kingdom every ten years since 1801, with the exceptions of 1941 (during World War II) and in both Northern Ireland and the Irish Free State 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.[1]


Tax assessments were made in Britain in Roman times (known in the later Empire as the indiction), but detailed records have not survived.[2] 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" (Senchus fer n-Alban). England conducted its first formal census when the Domesday Book was compiled in 1086 by 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:

  • "the intimate knowledge of any country must form the rational basis of legislation and diplomacy"
  • "an industrious population is the basic power and resource of any nation, and therefore its size needs to be known"
  • "the number of men who were required for conscription to the militia in different areas should reflect the area's population"
  • "there were defence reasons for wanting to know the number of seamen"
  • "the need to plan the production of corn and thus to know the number of people who had to be fed"
  • "a census would indicate the Government's intention to promote the public good", and
  • "the life insurance industry would be stimulated by the results".

Regular national censuses have taken place 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 that contained 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,[3] 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.[4] 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.[5]

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.[6][7][8]

Release of information

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 exempted if disclosure could result in successful prosecution for breach of confidence.[9][10] In exceptional circumstances, the Registrar General for England and Wales does release specific information from 70-, 80-, or 90-year-old closed censuses.


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.[11]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,[12] 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.[13] No census took place in Northern Ireland in 1931.


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.[14][15] The Census Act 1920 (as amended) legislates a fine of up to £1,000 for those who refuse to complete their census forms.

During 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 of that year. 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 widely-despised tax. It was estimated that up to one million people were not counted by the 1991 census due to such aversion.[16]

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.[17][18] 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.[19]


Although the 1851 census had included a question about religion on a separate response sheet, whose completion was not compulsory, 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).


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.[20]


Main article: United Kingdom Census 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.[21]

List of UK censuses

Year Date Notes New questions asked
1801 10 March Details collected were mainly head-counts, with few records still existing.
1811 27 May
1821 28 May
1831 30 May
1841 6 June Name. Age (for those over 15, this was supposed to be rounded down to the nearest 5 years, though this instruction was not obeyed in all cases). Occupation. Whether born in same county recorded as "Yes" or "No" of resident county and if no Whether born in Scotland, Ireland of Foreign Parts would be marked with a '√' (tick).
1851 30 March Relation to head of the household. Marital status. Place of birth. Whether blind, deaf or dumb. Language spoken (Ireland). Rounding down of ages dropped.
1861 7 April Economic status.[22]
1871 2 April Whether an imbecile, idiot or lunatic[23] (note that such usage of terms predates euphemistic definitions; see euphemism treadmill).
1881 3 April Language spoken (in Scotland).
1891 5 April Language spoken (in Wales).[22] Whether an employer, an employee, or neither. Number of rooms occupied, if fewer than 5.[24]
1901 31 March Number of rooms in dwelling.[22] Whether an employer, worker or working on one's own account. Whether working at home or not. Language spoken (in Wales – children under 3 years of age excluded).[25]
1911 2 April First UK Census where the Census Return for a particular household or institution written directly by the "Head of Household" was used as the primary census return.

Industry or service with which the worker is connected.[22] How long the couple has been married. How many children were born alive, how many who are still alive, and how many who have died. "Nationality of any Person born in a Foreign Country". The final column, which had been "Deaf and Dumb, Blind, Lunatic, Imbecile, Feeble-minded", becomes "INFIRMITY :Totally Deaf and Dumb, Totally Blind, Lunatic, Imbecile, Feeble-minded".

1921 19 June Place of work and industry[22] Whether a marriage has been dissolved by divorce.[26]
1931 26 April England and Wales – destroyed in 1942 fire; Northern Ireland – no census. Place of usual residence[22]
1939 29 September National Registration Act 1939.[27] No census in 1941 due to the Second World War.
1951 8 April Household amenities.[22]
1961 23 April Qualifications, migration, household tenure.[22]
1966 24 April Long-form/short-form census, trialling an alternative method of enumeration. Car ownership, method of travel to work.[22]
1971 25 April
1981 5 April
1991 21 April Ethnic group, long-term limiting illness, central heating, term-time address of students.[28]
2001 29 April Size of workforce, supervisor status, first question on religion on the main census form (England, Wales, and Scotland).[22]
2011 27 March An option to complete the form online.[29] Also provided English, Northern Irish, Scottish, Welsh and British national identity option following criticism that English and Welsh were absent from 2001.[30][31][32][33] Includes questions relevant to civil partnerships. Other new questions involve asking migrants their date of arrival and how long they intend to stay in the UK; respondents also required to disclose which passports they held.[34] A rehearsal census was conducted on 11 October 2009.[35]

See also


External links

  • The Office for National Statistics, which is responsible for the Census in England and Wales
    • The Census Order 2000 (England & Wales)
  • The National Archives - selective access information to UK census data.
  • The Census Office for Northern Ireland
  • The General Register Office for Scotland which has been responsible for the taking of the census in Scotland since 1861.
    • Scotland's Census Results OnLine
  • The British Census (Concepts and Techniques in Modern Geography)
    • The UK Census of Population 1981 (Concepts and Techniques in Modern Geography)
    • The UK Census of Population 1991 (Concepts and Techniques in Modern Geography)
  • - free census resources for academic research in the UK.
  • Official archived version of 2011 census website (
  • Census Finder- Directory of free-to-access online UK census records.
  • My Family Ancestors - List of mainly free-to-access census records from 1801 to 1901

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