{"schemaVersion":"1.0","id":"how-old-are-londons-companies","dataset":"company-incorporation-cohorts","title":"How old are London's companies?","description":"The incorporation-age profile of companies still live in the monthly register snapshot.","methodology":"Age bands are calculated from incorporation date for companies still present in the official monthly basic-company snapshot and whose full registered-office postcode resolves to London. This is a survival-weighted stock, not a historic formation series: a small old cohort can reflect dissolution, relocation or register coverage as well as company longevity. Registered offices are administrative locations and SIC codes are self-declared.","category":"money","categoryLabel":"Money","cadence":"monthly","placeholder":false,"landingPage":"https://londongraph.com/g/how-old-are-londons-companies","markdown":"https://londongraph.com/g/how-old-are-londons-companies/index.html.md","source":{"name":"Companies House","url":"https://download.companieshouse.gov.uk/en_output.html","licence":"Open Government Licence v3.0","licenceUrl":"https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/"},"updatedAt":"2026-08-02T22:34:40.179Z","release":{"label":"Live-company snapshot 2026-08-01","publishedAt":"2026-08-01T00:00:00.000Z","resourceUrl":"https://download.companieshouse.gov.uk/BasicCompanyData-2026-08-01-part1_7.zip https://download.companieshouse.gov.uk/BasicCompanyData-2026-08-01-part2_7.zip https://download.companieshouse.gov.uk/BasicCompanyData-2026-08-01-part3_7.zip https://download.companieshouse.gov.uk/BasicCompanyData-2026-08-01-part4_7.zip https://download.companieshouse.gov.uk/BasicCompanyData-2026-08-01-part5_7.zip https://download.companieshouse.gov.uk/BasicCompanyData-2026-08-01-part6_7.zip https://download.companieshouse.gov.uk/BasicCompanyData-2026-08-01-part7_7.zip","methodologyUrl":"https://www.gov.uk/guidance/companies-house-data-products","sha256":"87ab9f770619675e694fad88f3fc338c87b2ba2aeb7b1c589b3edb214bf116dd"},"observations":[{"series":"","buckets":["Under 1 year","1–4 years","5–9 years","10–19 years","20–34 years","35 years or more"],"values":[266873,530060,356278,269618,106562,43587],"unit":"live companies","metadata":[{},{},{},{},{},{}]}],"areaStatistics":null,"visualizations":[{"id":"age","label":"Age profile","description":"Compare incorporation-age bands among companies still live in the snapshot.","url":"https://londongraph.com/g/how-old-are-londons-companies","renderer":"primary","default":true,"timeControl":"inherit","datasets":[],"transform":null,"controls":null,"metrics":[],"caveat":null},{"id":"status","label":"Register status","description":"Compare active, strike-off proposal, liquidation and other live-register statuses.","url":"https://londongraph.com/g/how-old-are-londons-companies?view=status","renderer":"treemap","default":false,"timeControl":"inherit","datasets":["company-statuses"],"transform":null,"controls":null,"metrics":[],"caveat":null},{"id":"sector-cohorts","label":"Sector cohorts","description":"Follow the last 21 incorporation years for companies still live, split by broad SIC sector.","url":"https://londongraph.com/g/how-old-are-londons-companies?view=sector-cohorts","renderer":"small-multiples","default":false,"timeControl":"inherit","datasets":["company-live-incorporation-by-sector"],"transform":null,"controls":null,"metrics":[],"caveat":"Older cohorts are affected by dissolution and registered-office moves."}],"availability":"observations","note":"The release is complete for the measures represented on the graph page."}