Companies House Accounts Data Product

Overview

Companies House, the UK register of companies, publishes the Accounts Data Product: free ZIP files containing the individual data files of company accounts filed electronically^[19]. A new daily file is added each morning from Tuesday to Saturday, containing accounts registered on the previous working day; daily files stay online for 60 days, after which the data is available only in monthly historic files^[19].

Files are in inline XBRL (iXBRL) or XBRL format, and each filename identifies the company number and balance-sheet date^[19]. Companies House states that electronically filed accounts make up about 75% of the 2.2 million accounts it expects each year, so the remaining paper or PDF filings are not in the product^[19].

The product is the primary source that commercial providers digitise for UK companies. It is free and authoritative, but it is supplied “free of charge and is not supported”: there is no standardisation across taxonomies, no ratios and no API, and users must parse iXBRL themselves^[19]. Small companies may file abridged accounts, which limits the line items available. The product covers UK-registered companies only.

Companies House Accounts Data Product features

• Free daily ZIP files (Tuesday to Saturday)
• Monthly historic archives
• iXBRL and XBRL instance documents
• Company number and balance-sheet date in filenames
• About 75% of annual UK accounts filings

Companies House Accounts Data Product pricing

Free.

Companies House Accounts Data Product strengths and limitations

Appears in

• Best Company Financial Data Providers in 2026 #6

Companies House Accounts Data Product alternatives and competitors

Alternatives to Companies House Accounts Data Product: companies ranked in the same lists.

• MonetaiQ
• MOMoody’s Orbis (formerly Bureau van Dijk)
• Global Database
• S&P Capital IQ Pro
• LWLSEG World-Check (UBO Check)
• Financial Modeling Prep
• SEC EDGAR APIs
• FFactSet
• Creditsafe
• EODHD
• PPitchBook