# Registrum, free, POST /v1/batch: Company enrichment API

> Async batch enrichment. Submit a list of up to 500 UK company numbers and Registrum enriches them in the background, automatically managing the Companies House API rate limit. Poll GET /v1/batch/{batch_id} for progress - polling is always free. Results are retained for 7 days. Ideal for bulk data pipelines and list processing.

Registrum's company enrichment API on its Free plan. It costs $0.00 per 1,000 companies. Registrum's docs list 4 of the 13 key fields we check: Description, Industry, Type and status, Headquarters.
We haven't run Registrum through [our company enrichment API benchmark](https://datacircle.dev/best-company-enrichment-api.txt) yet.
This plan is free. We rank 2,003 plans for company enrichment APIs by price. Half the plans cost $7.957 per 1,000 companies or less.
[Extruct's $49 monthly plan](https://datacircle.dev/company-enrichment-apis/extruct/49-monthly/llms.txt) is the cheapest paid plan per 1,000 companies. Extruct's company enrichment API costs nothing beyond the plan price.
[APIs Peru's PEN 30 monthly plan](https://datacircle.dev/company-enrichment-apis/apis-peru/pen-30-monthly/llms.txt) covers any number of companies in Peru only. APIs Peru's PEN 30 monthly plan costs less up front than Extruct's $49 monthly plan.
[ROIC.ai](https://datacircle.dev/company-enrichment-apis/roic-ai/89-monthly/llms.txt), [GLEIF](https://datacircle.dev/company-enrichment-apis/gleif/free/llms.txt) and [GetProspect](https://datacircle.dev/company-enrichment-apis/getprospect/49-monthly-starter-post-v2-companies-enrich/llms.txt) are the best company enrichment API providers in the Datacircle benchmark for companies in any country.

- This page: https://datacircle.dev/company-enrichment-apis/registrum/free-post-v1-batch
- [Company enrichment API: the best of 160+ providers compared](https://datacircle.dev/best-company-enrichment-api.txt)
- Get it: https://registrum.co.uk/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-enrichment-api-pricing#pricing
- Request: `POST https://api.registrum.co.uk/v1/batch`
- API key: with the plan, on https://registrum.co.uk/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-enrichment-api-pricing#pricing
- Its API docs: https://api.registrum.co.uk/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-enrichment-api-pricing#/Batch/submit_batch_v1_batch_post
- Sold by: Registrum (https://registrum.co.uk?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-enrichment-api-pricing)
- Checked: 2026-11-06

## In the answer

- Completeness: 31%
- Description: ✓
- Industry: ✓
- Type and status: ✓
- Headquarters: ✓

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Also pays for: Create a webhook subscription: 1 company watched · from the same budget: Search for companies by name · 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

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Async batch enrichment. Submit a list of up to 500 UK company numbers and Registrum enriches them in the background, automatically managing the Companies House API rate limit. Poll GET /v1/batch/{batch_id} for progress - polling is always free. Results are retained for 7 days. Ideal for bulk data pipelines and list processing.

## Data

- 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 results a month

## Rate limit

- Per day: 15
- Per second: 0.17
- Batch: 500

## Speed

- Answer: by polling

## The call

- You send: company_numbers
- Method: POST
- Path: /v1/batch

## About the plan

- Plan: Free
- Who can get it: anyone

## The 19 fields the plan's answer can hold

company number, name, status, company type, incorporation date, company age, registered address, SIC code, last accounts type, last accounts made up to, next accounts due, accounts overdue, last confirmation statement made up to, next confirmation statement due, confirmation statement overdue, company category, has charges, has insolvency history, summary

## Registrum's plans (4)

- [Registrum, free, POST /v1/batch](https://datacircle.dev/company-enrichment-apis/registrum/free-post-v1-batch/llms.txt): $0.00 per 1,000, 31% complete
- [Registrum, £9 monthly, Web, POST /v1/batch](https://datacircle.dev/company-enrichment-apis/registrum/9-monthly-web-post-v1-batch/llms.txt): $24.003 per 1,000, 31% complete
- [Registrum, £49 monthly, Pro, POST /v1/batch](https://datacircle.dev/company-enrichment-apis/registrum/49-monthly-pro-post-v1-batch/llms.txt): $16.335 per 1,000, 31% complete
- [Registrum, contact us, Enterprise, POST /v1/batch](https://datacircle.dev/company-enrichment-apis/registrum/contact-us-enterprise-post-v1-batch/llms.txt): 31% complete

## Registrum's calls for this API (5)

- `POST /v1/enrich`: [Registrum, free, POST /v1/enrich](https://datacircle.dev/company-enrichment-apis/registrum/free-post-v1-enrich/llms.txt)
- `GET /v1/company/{company_number}`: [Registrum, free, GET /v1/company/{company_number}](https://datacircle.dev/company-enrichment-apis/registrum/free-get-v1-company-company-number/llms.txt)
- `POST /v1/batch`: [Registrum, free, POST /v1/batch](https://datacircle.dev/company-enrichment-apis/registrum/free-post-v1-batch/llms.txt)
- `GET /v1/company/{company_number}/bundle`: [Registrum, free, GET /v1/company/{company_number}/bundle](https://datacircle.dev/company-enrichment-apis/registrum/free-get-v1-company-company-number-bundle/llms.txt)
- `GET /v1/company/{company_number}/kyb-report`: [Registrum, £49 monthly, Pro, GET /v1/company/{company_number}/kyb-report](https://datacircle.dev/company-enrichment-apis/registrum/49-monthly-pro-get-v1-company-company-number-kyb-report/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/batch](https://datacircle.dev/company-enrichment-apis/registrum/free-post-v1-batch/llms.txt)
- [Registrum: company hierarchy API pricing, 2 plans](https://datacircle.dev/company-hierarchy-apis/registrum/49-monthly/llms.txt)

## Registrum: company enrichment API alternatives

- [firmafind, €29 pack](https://datacircle.dev/company-enrichment-apis/firmafind/29-pack/llms.txt): $16.317 per 1,000, 23% complete, 1 day
- [ListSignal, $490 yearly](https://datacircle.dev/company-enrichment-apis/listsignal/490-yearly/llms.txt): $16.333 per 1,000, 69% complete, 1 month
- [Findymail, $990 yearly](https://datacircle.dev/company-enrichment-apis/findymail/990-yearly/llms.txt): $16.50 per 1,000, 31% complete
- [Pappers, €1,100 monthly, Monthly 75K credits, GET /v1/company, Retrieves all available information about a company](https://datacircle.dev/company-enrichment-apis/pappers/1100-monthly-monthly-75k-credits-get-v1-company-retrieves-all-available-information-about-a-company/llms.txt): $16.504 per 1,000, 31% 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 2026-11-06.

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