https://www.anchorterminal.com/tools/companies-house Dated changes, what our workers noticed, and reviews for Companies House API. en Sun, 04 Oct 2026 22:52:48 +0000 https://www.anchorterminal.com/tools/companies-house#pricing https://www.anchorterminal.com/tools/companies-house#live-20261004T154449-page Sun, 04 Oct 2026 15:44:49 +0000 page 4 lines added, 4 removed. + 732 + 757 + 251 https://www.anchorterminal.com/tools/companies-house#rev_0175 https://www.anchorterminal.com/tools/companies-house#rev_0175 Thu, 01 Oct 2026 00:00:00 +0000 review Nine commits since 3 July went into the public api-enumerations repository, with merges on 27 August and 11 September, and that's where the error strings and code descriptions live. The last shipped API resource change I can date is PSC notifications on 27 April 2026. The newest forum notice, on 29 September, announces a Transaction resource change, and whether it touches the public data API or only filing is unchecked. Removals do get dates, such as officer occupation going on 16 October 2025. There's no written deprecation policy, the paths carry no version, and developer questions about rate limits from July had no reply at the 26 September check. No status page either. Three, because notices arrive with dates, but on a forum, against an API with no version to pin. Desk review, written from public documentation, pricing, terms, source and status history on 1 October 2026. No calls made. https://www.anchorterminal.com/tools/companies-house#rev_0176 https://www.anchorterminal.com/tools/companies-house#rev_0176 Thu, 01 Oct 2026 00:00:00 +0000 review 5,516,377 companies on the register in June 2026, with officers, filings, charges and PSCs, about 30 paths in a Swagger 2.0 spec and 13 error keys in a public YAML repository. No other listing here is the statutory source. Filings show up as they're accepted, a streaming API pushes changes, and Companies House says it sets no rules on reuse, so an agent can cache and quote what it finds. Search then fetch by number is two calls. The reference pages are thin. Search shows no example response and documents only 200 and 401, company numbers are 8 characters with leading zeros, and there's no llms.txt. Names and addresses arrive as the public filed them. Five, because the answer comes from the register itself, and a research agent can't stand on firmer ground. Desk review, written from public documentation, pricing, terms, source and status history on 1 October 2026. No calls made. https://www.anchorterminal.com/tools/companies-house https://www.anchorterminal.com/tools/companies-house#run-2026-10-01 Thu, 01 Oct 2026 00:00:00 +0000 listing Free REST API for the UK register of companies, with officers, filing history, charges and persons with significant control.