See CompanyStack at work

Check a company in 30 seconds. Search, health score, people, owners and accounts, then what Pro adds.

Search any UK company by name or number.

CLUB FREE SPIRIT LIMITED, a tour operator incorporated in 2007. The profile comes from the Companies House register.

Every company gets a health score out of 100, with a grade and a risk level.

The score is built from six measured areas, and each one shows the facts behind it.

Filing deadlines come from the register: the next accounts are due by 31 March 2027.

Directors and people with significant control come live from Companies House.

On the free plan you see the latest filed accounts, for the year to 30 June 2025.

Due diligence risk reports and PDF company reports are part of CompanyStack Pro.

Here is the same company on CompanyStack Pro, which is £19 a month.

Pro shows the full history: 10 years of accounts, each parsed from the filing at Companies House.

Download a branded PDF company report to keep on file or share.

Check any UK company free. Free web app. Pro is £19 a month for full financial history, risk reports and PDF reports. companystack.co.uk

Supplier due diligence. A risk report in the web app, then a KYB check, audit record and certificate from the API.

A new supplier: RUSSMORE PROPERTY COMPANY LIMITED, a property company incorporated in 1961.

On CompanyStack Pro, the due diligence report shows each risk factor and its source.

For onboarding at scale, the same checks run through the CompanyStack API.

The supplier declared one person with significant control.

Result: refer, reason PSC_DISCREPANCY. The register also lists Modelgate Ltd.

Each check returns its reason code and the evidence behind it.

Next, the same check with Modelgate Ltd declared as well.

Result: pass. The declared owners now match the PSC register.

Every check is stored, so you can show exactly what the register said and when.

GET /kyb/checks/{id}.pdf returns a branded KYB check certificate.

Anyone can confirm the certificate is genuine at its verification page, reference CSK-6KJP-4CKQ-EPB0.

Verify suppliers in one call. KYB checks are on the CompanyStack API Starter plan (£29 a month) and above. companystack.co.uk/api

Monitor your portfolio. Watch companies and hear about changes by email and webhook.

Watch the companies you work with. A & C THOMAS LTD is facing a proposal to strike off in the register of 1 January 2026.

A & H FOODS LIMITED is in liquidation.

And CLUB FREE SPIRIT LIMITED, which is active.

The watchlist shows each company’s status and any unread alerts.

Next, the Companies House register snapshot of 1 February 2026 is loaded.

Two of the companies have left the register: they were dissolved on 19 January 2026 and 20 January 2026.

Pro sends one email digest a day with every change (shown in a local test mailbox).

Your systems can receive the same alerts as signed JSON webhooks.

Each delivery is signed, so your endpoint can check it came from CompanyStack.

Watch the companies that matter to you. Pro watches 250 companies with daily email alerts, for £19 a month. companystack.co.uk/pricing?product=app

Developer quick start. Sign up, get a key, make a live request and copy the code.

The CompanyStack API: Companies House data as JSON, for your own product.

Sign up with an email address. The Free plan needs no card.

Choose what you are here for. The same account works for the web app and the API.

Your key is shown once, so copy it now. It is blurred in this recording.

Your keys live in the dashboard, where you can add, rename and revoke them.

Try a request on the API page. Signed in, it runs as you.

The response is JSON: the company profile as held on the register.

Search works the same way: company names, filtered and ranked.

Copy the same request as code, in cURL, JavaScript or Python.

Get a free API key. The Free plan includes 1,000 requests a day, no card needed. Starter is £29 a month. companystack.co.uk/api

New companies today. The latest incorporations, a day-old company’s profile and a CSV export by industry.

2,654 companies were incorporated on 28 September 2026, the latest full day in the register.

It also lists the most common industries among the companies shown.

Each one is listed with its company number, type, industry (SIC code) and post town.

3D DIGITAL LTD, incorporated on 28 September 2026, already has a profile.

Its directors come live from Companies House.

Sector intelligence filters by SIC code: 62012, business and domestic software development.

On Pro, export the industry’s companies to CSV, up to 5,000 rows a month.

The export opens in any spreadsheet: number, name, status, incorporation date, address and SIC code.

Find new companies as they form. Pro includes 5,000 CSV export rows a month, for £19 a month. companystack.co.uk/pricing?product=app