UK Companies Housefind-and-update.company-information.service.gov.uk
Official UK company register. Free filings, accounts, officers, persons with significant control (PSC) and charges for every UK company.
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tools / opencorporates
OpenCorporates
Largest open database of companies, with 200M+ entities from 140+ jurisdictions. Search by company name, registration number or officer name.
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field note
Search officers as well as companies. One person's directorships across jurisdictions often expose shell structures. Bulk data and the API need a paid or journalist/NGO plan.
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