Companies House
Filed Company Accounts (Companies House Accounts Data)
The actual accounts UK companies file each year — turnover, assets, cash, employee numbers and more — published as machine-readable filings rather than PDFs. Roughly 60% of the 2.2 million sets of accounts filed annually are here, free.
At a glance
- Publisher
- Companies House
- Updates
- Updated daily
- Cost
- Free — open data
- Last checked
- 2026-07-16
Professional & B2B servicesFinancial servicesInsuranceBusiness & companies
What your business can use it for
- Customer & supplier checksSee a customer's real balance sheet before you extend credit or sign a long contract — filed figures, not a credit agency's opinion of them.
- Sales prospectingQualify a target list by size: filter prospects on turnover, assets or headcount so your sales effort goes to companies that can actually afford you.
- Market analysisBenchmark yourself against the filed accounts of everyone else in your sector, and track how the sector's finances move year on year.
- Risk assessmentKeep an eye on the customers and suppliers you depend on: each year's filed accounts show whether their assets and cash are growing or shrinking, so a weakening balance sheet shows up in the figures before you commit more money to them.
Works with data you already have
- Company numbers you hold for customers, suppliers or prospectsCompany numbersThe CRN is embedded in each filing's filename (position 3, zero-padded to 8 digits) — join straight to the UK Company Register
- Your patch, territory or delivery-area postcodesPostcodesAddress is tagged inside each filing (uk-bus:PostalCodeEntity); link to geography via the free ONS postcode lookup
How to get it
- Daily and monthly bulk archives of every filingBulk downloadNo account needed. Daily zips appear Tuesday to Saturday; a consolidated monthly zip lands within 5 working days of month-end.
- Monthly archive index (back catalogue)Bulk downloadWhere to pick up whole months at a time rather than day by day.
- Companies House REST API — filing history per companyAPIFree API key. Better than bulk if you only care about a few hundred companies you already know.
What's involved in using it
- Every company's accounts arrive as their own separate tagged document rather than rows in a spreadsheet, so turning them into a table you can analyse needs specialist software to read the financial figures out of each one.
- The files balloon enormously when unpacked, into thousands of tiny files, so processing a full year is a serious data-engineering job, not a desktop exercise.
- Only about 60% of all company accounts are in here (the ones filed electronically), so it never covers every company: the smallest firms filing on paper are missing, and so are revised accounts.
The technical detail, for whoever sets it up (4)
- This is the hardest dataset here to work with: the filings are iXBRL documents.
- Small and micro-entity accounts are legally allowed to omit turnover and profit — for most small and medium-sized businesses you will get a balance sheet and little else.
- The files expand roughly 85× when unzipped — one day of filings is about 7 GB extracted. Read them inside the zip.
- Monthly archives include the same filings as that month's daily files — use one or the other, or you will double-count.
Ask us about Filed Company Accounts (Companies House Accounts Data)
Ask a factual question about Filed Company Accounts (Companies House Accounts Data) — what it covers, how often it changes, whether it matches the records you keep — and we will answer, free. Or tell us what you are trying to work out, and we will tell you what it would take to get this data working next to the numbers you already have.