# Registrum, free: Business verification API

> Find UK companies by name. Supports fuzzy matching and pagination. Results are cached for 1 hour.

Registrum's business verification API on its Free plan. It costs $0.00 per 1,000 companies. Registrum's docs list 6 of the 11 key fields we check: Registered name, Entity number, Entity type, Status, Formation date, Principal address.
We haven't run Registrum through [our business verification API benchmark](https://datacircle.dev/best-business-verification-api.txt) yet.
This plan is free. We rank 903 plans for business verification APIs by price. Half the plans cost $7.895 per 1,000 companies or less.
[CharityAPI's $15 monthly plan](https://datacircle.dev/business-verification-apis/charityapi/15-monthly-paid-get-api-organizations-ein/llms.txt) is the cheapest paid plan per 1,000 companies. CharityAPI's plan covers companies in the United States only. CharityAPI's $15 monthly plan charges nothing per call. You get as many companies as CharityAPI's rate limit allows.
[Scoris's €19 pack](https://datacircle.dev/business-verification-apis/scoris/19-pack/llms.txt) covers any number of companies in 8 countries only. Scoris's €19 pack costs more up front than CharityAPI's $15 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/registrum/free
- [Business verification API: the 12 best providers compared](https://datacircle.dev/best-business-verification-api.txt)
- Get it: https://registrum.co.uk/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing#pricing
- Request: `GET https://api.registrum.co.uk/v1/search`
- API key: with the plan, on https://registrum.co.uk/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing#pricing
- Its API docs: https://api.registrum.co.uk/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing#/Search/search_companies_v1_search_get
- Sold by: Registrum (https://registrum.co.uk?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing)
- Checked: 2026-11-06

## In the answer

- Completeness: 55%
- Registered name: ✓
- Entity number: ✓
- Entity type: ✓
- Status: ✓
- Formation date: ✓
- Principal address: ✓

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Also pays for: Create a webhook subscription: 1 company watched · from the same budget: Get enriched company profile · Whole company page in one request · Get company directors with their other appointments · Map connected companies via shared directors · Get structured financial data from filed accounts · Get persons with significant control · Bulk enrich up to 50 companies in one request · Submit a batch of up to 500 companies for async enrichment

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Find UK companies by name. Supports fuzzy matching and pagination. Results are cached for 1 hour.

## Data

- Freshness: 1 hour
- Countries: United Kingdom
- Keep data: no limit
- Use data: You may use the API for any lawful purpose. You may not: attempt to circumvent rate limits, resell raw API responses without transformation, use the service to build a competing API product, or use the data in a way that violates the Open Government Licence v3.0.

## Plan

- Pay: £0
- You get: 50 credits a month
- Enough for: 50 calls a month

## Rate limit

- Per day: 15
- Per second: 0.17
- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: q. Optional: items_per_page, start_index, enrich
- Method: GET
- Path: /v1/search

## About the plan

- Plan: Free
- Who can get it: anyone

## The 8 fields the plan's answer can hold

company number, name, status, company type, incorporation date, registered address, snippet, total results

## Registrum's plans (4)

- [Registrum, free](https://datacircle.dev/business-verification-apis/registrum/free/llms.txt): $0.00 per 1,000, 55% complete, 1 hour
- [Registrum, £9 monthly](https://datacircle.dev/business-verification-apis/registrum/9-monthly/llms.txt): $24.003 per 1,000, 55% complete, 1 hour
- [Registrum, £49 monthly](https://datacircle.dev/business-verification-apis/registrum/49-monthly/llms.txt): $16.335 per 1,000, 55% complete, 1 hour
- [Registrum, contact us](https://datacircle.dev/business-verification-apis/registrum/contact-us/llms.txt): 55% complete, 1 hour

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

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

## Registrum's APIs (4)

- [Registrum: business verification API pricing, 4 plans](https://datacircle.dev/business-verification-apis/registrum/free/llms.txt)
- [Registrum: people search API pricing, 4 plans](https://datacircle.dev/people-search-apis/registrum/free/llms.txt)
- [Registrum: company enrichment API pricing, 4 plans, POST /v1/enrich](https://datacircle.dev/company-enrichment-apis/registrum/free-post-v1-enrich/llms.txt)
- [Registrum: company enrichment API pricing, 4 plans, GET /v1/company/{company_number}](https://datacircle.dev/company-enrichment-apis/registrum/free-get-v1-company-company-number/llms.txt)
- [Registrum: company enrichment API pricing, 4 plans, POST /v1/batch](https://datacircle.dev/company-enrichment-apis/registrum/free-post-v1-batch/llms.txt)
- [Registrum: company enrichment API pricing, 4 plans, GET /v1/company/{company_number}/bundle](https://datacircle.dev/company-enrichment-apis/registrum/free-get-v1-company-company-number-bundle/llms.txt)
- [Registrum: company hierarchy API pricing, 2 plans](https://datacircle.dev/company-hierarchy-apis/registrum/49-monthly/llms.txt)

## Registrum: business verification API alternatives

- [Scavio, top-up from $25](https://datacircle.dev/business-verification-apis/scavio/top-up-from-25/llms.txt): $10.00 per 1,000, 45% complete, live
- [cvr.dev, DKK 99 monthly](https://datacircle.dev/business-verification-apis/cvr-dev/dkk-99-monthly/llms.txt): $11.924 per 1,000, 55% complete, 1 minute
- [Parse, $300 monthly, Team, GET /scraper/8ceea6f9-34d2-4d7f-adf1-fc7bdd90b476/search_entities](https://datacircle.dev/business-verification-apis/parse/300-monthly-team-get-scraper-8ceea6f9-34d2-4d7f-adf1-fc7bdd90b476-search-entities/llms.txt): $15.00 per 1,000, 55% complete, live
- [W System EU Business Data, €19 monthly, Starter, POST /kyb/check](https://datacircle.dev/business-verification-apis/w-system-eu-business-data/19-monthly-starter-post-kyb-check/llms.txt): $21.381 per 1,000, 55% complete, live (sanctions status, sanctions top score, sanctions matches, sanctions lists date: 1 day)

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-06.

- https://api.registrum.co.uk/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- https://api.registrum.co.uk/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- https://api.registrum.co.uk/v1/plans?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- https://registrum.co.uk?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- https://registrum.co.uk/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing#pricing
- https://registrum.co.uk/bulk-enrichment?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- https://registrum.co.uk/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing