micro-entity Micro-entities
A balance sheet and little else. Expect net assets and sometimes headcount — turnover and profit are almost never disclosed.
COVERAGE REFRESHED DAILY FROM THE REGISTER
What we have, and what we don’t.
Every registered UK company is in here. Not every company has filed every number — small-company exemptions are real, and we’d rather tell you that up front than hand you a zero.
5.48m1
companies on the total register
UK-wide
England, Scotland, Wales & NI
Daily
refreshed from the register
Six
data layers on one company record
1 Companies House total register at 31 March 2026.
Coverage by layer
Three layers are as complete as the register itself. Three depend on what the company has filed or published — we publish the conditions, not headline percentages, and every response tells you which case you’re in.
- Full register
/companyWho they areIdentity, status, addresses, SIC codes and accounts summaries for every company on the register — active or dissolved.
- Full register
/company-filingsWhat they’ve filedThe filing history exactly as Companies House records it. History depth varies with company age.
- Full register
/officersWho runs itEvery officer appointment on the register, current and resigned, with a stable person ID you can pivot on.
- Since April 2016
/ownershipWho controls itPSCs and shareholders as filed. The PSC regime only begins in April 2016, and shareholder registers are annual snapshots, not live.
- Needs a website
/intelligenceWhat they actually doNeeds a findable website we can verify belongs to the company. No verified domain means a no-data response, not a guess.
- As filed
/financialsHow they’re doingDepends on what the company was required to file. Balance-sheet fields are common; turnover only where a P&L was disclosed.
New Two funding signals sit alongside these layers — /fundraisings, live now, reconstructs SH01 share allotments into
fundraising events; /grants for public grant awards is in early
access and costs nothing until its data lands.
Why financials aren’t 100%
Because the law doesn’t require them to be. What a UK company must file depends on its size, and most companies are small. We tell you which regime each set of accounts was filed under rather than guessing at the gaps.
small · abridged Small and abridged
Small companies can file without a profit and loss account. You’ll usually get the balance sheet, rarely turnover.
full · group Full and group
The complete picture: turnover, profit, balance sheet and employee numbers, for every filed period we hold.
dormant Dormant
A statement that nothing happened. Flagged as dormant so you can filter them out of a prospect list in one line.
Where a figure was not disclosed, the field is explicitly null — null means not disclosed, never zero, and
we never backfill it with an estimate dressed up as a filed number. The accounts_type field tells you which filing regime
you’re looking at.
Companies with no filed accounts at all return a no_data status, and a no-data response never
costs a credit.
{
"status": "success",
"data": {
"period_end": "2025-03-31",
"accounts_type": "micro-entity",
"turnover": null, // not disclosed — never zero
"net_curr_assets": 84213,
"num_employees": 4
}
}
How fresh is fresh
We take a feed from the register every day and re-crawl company websites on a rolling cycle. Responses carry field-level source and provenance metadata, so you never have to assume.
| Layer | Refresh | Typical lag |
|---|---|---|
| Identity & status | Daily | Typically 24–48 hours |
| Filings & documents | Daily | Typically 24–48 hours |
| Financials | On new filing | Parsed when the filing lands |
| People & ownership | Daily | Typically 24–48 hours |
| Business description | Rolling crawl | Up to ~30 days |
Where it comes from
Four sources, attributed at the field level. Nothing is bought from a broker and resold without a trail.
Companies House register & filings
The spine of every record: identity, status, officers and the full filing history.
iXBRL accounts
Filed accounts parsed and normalised into one schema across every accounts type and taxonomy.
The company’s own website
Where the business description comes from. Crawled politely, matched to the legal entity, and dated.
The PSC register
Persons with significant control and corporate chains, used to work out who actually controls a company.
The honest limits
Things this API doesn’t do, so you find out here rather than three weeks into an integration.
UK only
England, Wales, Scotland and Northern Ireland. A foreign parent appears by name on a PSC record, but has no company record of its own.
No sole traders or partnerships
If it isn’t on the Companies House register, it isn’t here. LLPs are covered; unincorporated businesses aren’t.
Not a contact database
No scraped personal emails or mobile numbers. Contact details appear only where a company publishes them on its own website.
Descriptions lag a website rewrite
By up to a month. Descriptions are re-crawled on a rolling cycle, so a fresh rebrand can take a few weeks to show up here.
Very new companies are thin
Nothing filed yet means nothing to report. You’ll get identity and officers, and null financials — not a guess.
Ownership stops at the register’s edge
Where a chain runs offshore, we return the last verifiable hop and say so, rather than inventing the rest.
START FREE LIVE DATA, NO CARD
See the coverage on your own data.
50 free live credits a month, no card — and the example companies are always free. Upgrade when you’re ready to point a bigger allowance at the companies you actually care about.