# fourzerotwo, free: Business verification API

> Find UK companies by name or number, with status, address and incorporation date.

fourzerotwo's Free key plan for the business verification API costs $0.00 per 1,000 companies. We check each provider's docs for 11 fields. fourzerotwo's docs list 5: Registered name, Entity number, Status, Formation date, Principal address.
You get up to 90 calls a month.
We haven't run fourzerotwo through [our business verification API benchmark](https://datacircle.dev/best-business-verification-api.txt) yet.
This plan is free. We rank 1,735 plans for business verification APIs by price. Half the plans cost $7.895 or less per 1,000 companies. [See the best free business verification API plan.](https://datacircle.dev/best-business-verification-api.txt)
[SafeDeal's ₸50,000 (about $110) monthly plan](https://datacircle.dev/business-verification-apis/safedeal/50000-monthly/llms.txt) is the cheapest paid plan per 1,000 companies. SafeDeal's business verification API costs nothing beyond the plan price. SafeDeal's plan covers companies in Kazakhstan only. [ApiZero's CNY 399 yearly plan](https://datacircle.dev/business-verification-apis/apizero/cny-399-yearly-diamond-membership-get-api-company-search/llms.txt) costs the least for 10,000 companies a month: about $4.97.
[Scoris' €19 pack](https://datacircle.dev/business-verification-apis/scoris/19-pack/llms.txt) covers any number of companies in 8 countries only. Scoris' €19 pack costs less up front than SafeDeal's ₸50,000 (about $110) monthly plan.
[GovFiles](https://datacircle.dev/business-verification-apis/govfiles/top-up/llms.txt), [Didit](https://datacircle.dev/business-verification-apis/didit/top-up-from-50/llms.txt) and [CompanyData.com](https://datacircle.dev/business-verification-apis/companydata-com/249-monthly/llms.txt) are the best business verification API providers in the Datacircle benchmark for companies in any country.

- This page: https://datacircle.dev/business-verification-apis/fourzerotwo/free
- [Business verification API in 2026: the 8 best compared](https://datacircle.dev/best-business-verification-api.txt)
- Get it: https://fourzerotwo.si/free?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- Request: `GET https://fourzerotwo.si/v1/companies-house/search`
- API key: with the plan, on https://fourzerotwo.si/free?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- Its API docs: https://fourzerotwo.si/apis/companies-house/search?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- Sold by: fourzerotwo (https://fourzerotwo.si?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing)
- Checked: 2026-11-10

## In the answer

- Completeness: 45%
- Registered name: ✓
- Entity number: ✓
- Status: ✓
- Formation date: ✓
- Principal address: ✓

## Price

- $ per 1,000 companies: $0.00
- Per: call
- Billing: free

## Aggregators

- Aggregators: none

## Charges

- Also pays for: from the same budget: 529 other fourzerotwo calls: 500 a day

## Not found

- $ per 1,000 calls that find nothing: $0.00

## In their words

- Their pitch: Find UK companies by name or number, with status, address and incorporation date.

## Data

- Countries: United Kingdom
- Keep data: no API terms
- Use data: Keep the attribution when you show the data.

## Plan

- Pay: $0
- Enough for: 90 calls a month

## Rate limit

- Per day: 3
- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: q
- Method: GET
- Path: /v1/companies-house/search

## About the plan

- Plan: Free key
- Who can get it: anyone with an email address

## The 5 fields the plan's answer can hold

company name, company number, status, address, incorporation date

## fourzerotwo's plans (5)

- [fourzerotwo, free](https://datacircle.dev/business-verification-apis/fourzerotwo/free/llms.txt): $0.00 per 1,000, 45% complete
- [fourzerotwo, pay as you go](https://datacircle.dev/business-verification-apis/fourzerotwo/pay-as-you-go/llms.txt): $3.00 per 1,000, 45% complete
- [fourzerotwo, $5 pack](https://datacircle.dev/business-verification-apis/fourzerotwo/5-pack/llms.txt): $3.00 per 1,000, 45% complete
- [fourzerotwo, $20 pack](https://datacircle.dev/business-verification-apis/fourzerotwo/20-pack/llms.txt): $3.00 per 1,000, 45% complete
- [fourzerotwo, $50 pack](https://datacircle.dev/business-verification-apis/fourzerotwo/50-pack/llms.txt): $3.00 per 1,000, 45% complete

## fourzerotwo's calls for this API (1)

- `GET /v1/companies-house/search`: [fourzerotwo, free](https://datacircle.dev/business-verification-apis/fourzerotwo/free/llms.txt)

## fourzerotwo's APIs (8)

- [fourzerotwo: business verification API pricing, 5 plans](https://datacircle.dev/business-verification-apis/fourzerotwo/free/llms.txt)
- [fourzerotwo: company discovery API pricing, 5 plans](https://datacircle.dev/company-discovery-apis/fourzerotwo/free/llms.txt)
- [fourzerotwo: company enrichment API pricing, 5 plans](https://datacircle.dev/company-enrichment-apis/fourzerotwo/free/llms.txt)
- [fourzerotwo: domain WHOIS API pricing, 5 plans](https://datacircle.dev/domain-whois-apis/fourzerotwo/free/llms.txt)
- [fourzerotwo: email verification API pricing, 5 plans](https://datacircle.dev/validate-email-apis/fourzerotwo/free/llms.txt)
- [fourzerotwo: phone validation API pricing, 5 plans](https://datacircle.dev/validate-phone-apis/fourzerotwo/free/llms.txt)
- [fourzerotwo: web scraping API pricing, 5 plans](https://datacircle.dev/web-scraping-apis/fourzerotwo/free/llms.txt)
- [fourzerotwo: IP company lookup API pricing, 5 plans, GET /v1/ip-geolocation/batch](https://datacircle.dev/ip-company-lookup-apis/fourzerotwo/free-key-get-v1-ip-geolocation-batch/llms.txt)
- [fourzerotwo: IP company lookup API pricing, 5 plans, GET /v1/ip-geolocation/lookup](https://datacircle.dev/ip-company-lookup-apis/fourzerotwo/free-key-get-v1-ip-geolocation-lookup/llms.txt)
- [fourzerotwo: IP company lookup API pricing, 5 plans, GET /v1/domains/ip-owner](https://datacircle.dev/ip-company-lookup-apis/fourzerotwo/free-key-get-v1-domains-ip-owner/llms.txt)
- [fourzerotwo: IP company lookup API pricing, 5 plans, GET /v1/ip-geolocation/asn](https://datacircle.dev/ip-company-lookup-apis/fourzerotwo/free-key-get-v1-ip-geolocation-asn/llms.txt)

## fourzerotwo: business verification API alternatives

- [Companyfacts, pay as you go](https://datacircle.dev/business-verification-apis/companyfacts/pay-as-you-go/llms.txt): $3.00 per 1,000, 45% complete
- [hihat, pay as you go, x402 pay per call, GET /lei](https://datacircle.dev/business-verification-apis/hihat/pay-as-you-go-x402-pay-per-call-get-lei/llms.txt): $3.00 per 1,000, 45% complete, 7 days
- [RedTape, pay as you go, x402 pay per call, GET /v1/eu/vat/validate](https://datacircle.dev/business-verification-apis/redtape/pay-as-you-go-x402-pay-per-call-get-v1-eu-vat-validate/llms.txt): $3.00 per 1,000, 18% complete
- [Greeneris, pay as you go, Pay per call with x402, GET /v1/ie/company](https://datacircle.dev/business-verification-apis/greeneris/pay-as-you-go-pay-per-call-with-x402-get-v1-ie-company/llms.txt): $3.00 per 1,000, 64% complete, 1 day
- [fittings.sh, pay as you go](https://datacircle.dev/business-verification-apis/fittings-sh/pay-as-you-go/llms.txt): $3.00 per 1,000, 27% complete

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-10.

- https://fourzerotwo.si/apis/companies-house/search?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- https://fourzerotwo.si/catalog.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- https://fourzerotwo.si/credits?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- https://fourzerotwo.si/free?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- https://fourzerotwo.si/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- https://fourzerotwo.si/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing