UK Companies House - Company Register

The UK register of companies currently on file, from Companies House's official open bulk data: ~5.7M companies, refreshed monthly. Every record carries the company number, name, status, category, registered address, incorporation date, up to four SIC codes, up to ten previous names, accounts and confirmation-statement dates, and the mortgage charge counters.

As of the 2026-10-01 monthly file (built 2026-10-18): 5,704,711 companies - 5,166,057 Active (90.6%), 423,006 Active - Proposal to Strike off, 5,276,662

Private Limited Company

Low cost

From $0.00005 per record, down to $0.00003 at Gold. Pay only for the records you actually receive - the whole register stays queryable, you are never billed for the scan behind it.

What you get per company

Search it

• Name - companyName="TESCO" (substring, case-insensitive).
• Exact id - companyNumber="08209948" (or SC, OC, NI numbers).
• Status - status="Active", "Active - Proposal to Strike off", "Liquidation", "In Administration". activeOnly=true keeps every status beginning with Active.
• Legal form - category="Private Limited Company", "Limited Liability Partnership", "Public Limited Company".
• Activity - sicCode="62020" (IT consultancy) or a section prefix such as "62" (information and communication). Matches any of the four SIC slots.
• Where - postcode="EC2A" (registered-office prefix).
• When - incorporatedFrom / incorporatedTo (YYYY-MM-DD).

Example inputs

Find companies by name - the KYB starting point.

{ "companyName": "TESCO", "maxResults": 20 }

One company, in full - every field in the register.

{ "companyNumber": "08209948" }

IT consultancies by SIC - matches all four SIC slots.

{ "sicCode": "62020", "maxResults": 25 }

Active companies in one postcode area

{ "postcode": "EC2A", "activeOnly": true, "maxResults": 20 }

Counts by status - mode=aggregate.

{ "mode": "aggregate", "groupBy": "status" }

Or roll it up

mode=aggregate returns one count row per group - status, category, SIC section, incorporation year, country of origin or accounts category. The default (empty) run answers the whole-register summary from a small precomputed record.

Example output

One company - mode=company:

{
 "companyNumber": "08209948",
 "companyName": "! LTD",
 "companyStatus": "Active",
 "companyCategory": "Private Limited Company",
 "countryOfOrigin": "United Kingdom",
 "incorporationDate": "2012-09-11",
 "regAddressLine1": "9 PRINCES SQUARE",
 "regPostTown": "HARROGATE",
 "regAddressCountry": "ENGLAND",
 "regPostCode": "HG1 1ND",
 "sicCodes": "99999",
 "sicTexts": "Dormant Company",
 "accountsRefDay": "30",
 "accountsRefMonth": "9",
 "accountsNextDueDate": "2027-06-30",
 "accountsLastMadeUpDate": "2025-09-30",
 "accountsCategory": "DORMANT",
 "returnsNextDueDate": "2016-10-09",
 "returnsLastMadeUpDate": "2015-09-11",
 "confStmtNextDueDate": "2027-09-25",
 "confStmtLastMadeUpDate": "2026-09-11",
 "numMortCharges": "0",
 "numMortOutstanding": "0",
 "numMortPartSatisfied": "0",
 "numMortSatisfied": "0",
 "previousNames": "",
 "companyUrl": "https://find-and-update.company-information.service.gov.uk/company/08209948"
}

Notes on the data, from the source

• One row = one company. companyNumber is unique.
• Companies on the register, not only active ones. The BasicCompanyData product lists every company currently on the register - including companies in liquidation, administration, receivership or a voluntary arrangement - but not dissolved companies, so no dissolution date or dissolved-company filter is offered.
• Monthly refresh. Companies House publishes each month's file within five working days of the previous month end; every record carries refreshedDate so you can see the snapshot it came from.
• One run returns up to 5,000 companies. Narrow the filters (name, SIC, postcode, status or incorporation dates) to reach a specific slice.
• Registered office, not trading address. The address fields are the company's registered office as filed with Companies House.
• Licence. Open Government Licence v3 - commercial reuse is expressly permitted, with attribution to Companies House.
• Scope. This actor covers the company register. Companies House publishes director/officer and PSC (persons with significant control) products separately; they are not part of this dataset.

Data source: download.companieshouse.gov.uk (Companies House, UK government).