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Companies House Lookup.

Search any UK registered company and see exactly what the Companies House API returns — company profile, directors, filing history, live from the official register.

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How this demo is built

This tool makes live requests to the Companies House REST API via a server-side PHP proxy that keeps the API key secure. The same approach is used in production integrations — the API key never appears in client-side code, requests are rate-limited, and responses are cached where appropriate. See what a full integration looks like →