Registrum
freemiumNewAsk Claude about any UK company via Companies House data
About
Registrum is a Companies House API and hosted MCP for UK company data. Ask Claude about any UK company with no signup, or call the REST API with a free key. You get parsed iXBRL financials, director networks, PSC ownership chains, and ECCTA checks as clean JSON. Free forever for light use after 60 days of full access (no card). Web is £9/month (500 calls). Pro is £49/month (4,000 calls).
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