Data shows the number of businesses (local units such as a factory or a shop) by Broad Industry Groups. Analyses are provided for VAT and/or PAYE based enterprises and local units. Where an enterprise has several local units, the location of the enterprise is generally the main operating site or the head office. The SIC groupings changed in 2009 when SIC2007 was used for the first time. Since 2008 the publication has been enhanced to include enterprises based on PAYE employers that are not also registered for VAT, extending the scope from the previous VAT based enterprise publication. This is a major change to the scope of the publication. The increase in units is most noticeable in the VAT-exempt industries of finance (J), education (M), health (N) and public administration (L, O and Q). Analysis is provided for VAT and/or PAYE based enterprises and local units. Where an enterprise has several local units, the location of the enterprise is generally the main operating site or the head office. This data is available on the ONS website. Data is an extract compiled from the Inter Departmental Business Register (IDBR) recording the number of local units that were live at a reference date in March.

Estimates of London's population between 1801 and 2021 (persons present 1801 to 1971 and usual residents for 1981 to 2021) derived from historic Census data. Figures for years before 1931 are estimates by the Greater London Council published in Research Memorandum 413, 'The Changing Population of the London Boroughs'. Figures for 1931, 1951, and 1961 were published in 'Census 1961 Greater London Tables'; Figures for 1971 to 2021 are taken from individual censuses.

Time series of official live birth estimates for local authority districts and selected higher geographies in England and Wales from 1991-92 onward. Data are collated from the following sources: ONS mid-year population estimates components of change - local authority births for mid-year periods from 2001-2 onward Births and deaths by Lower Super Output Area (LSOA), England and Wales, 1991 to 1992 to 2016 to 2017 - ad hoc release of births by (2011) LSOA for mid-year periods from 1991-92 to 2016-17 Live births in England and Wales for small geographic areas - births by (2011) LSOA for calendar year period from 2013 onward. Live births by month, sex and area of usual residence of mother, England and Wales - a series of ad hoc releases of monthly births at local authority level from September 2009 onward. While calendar year births data for local authorities is available for local earlier periods from the ONS website, this data has not yet been included here due to the complications caused by: the lack of geography codes accompanying the data for the years of interest the decision to combine data for Hackney and City of London, and Cornwall and the Isles of Scilly inconsistent formatting of the published tables A respository of the code used to collate these data is available on GitHub at: https://github.com/Greater-London-Authority/collate-birth-data This data is used as an input to Modelled estimates of recent births