Registrum

Search for companies

Search for UK companies by name. Returns a list of matching companies with their company number, status, type, and registered address. Use this first when you only have a company name and need its company number.

Get company profile

Get an enriched profile for a UK company by its Companies House number. Returns name, status, type, incorporation date, registered address, SIC codes with descriptions, accounts status, confirmation statement status, and derived fields like company_age_years and accounts.overdue that are not available from the raw Companies House API.

Get company financials

Get structured financial data for a UK company, parsed from its iXBRL accounts filed at Companies House. Returns revenue, cost of sales, gross profit, operating profit, net profit, fixed assets, current assets, total equity, net assets, creditors, and average employees for the current and prior reporting year. Also includes accounts type (full/abbreviated/micro/dormant) and a data_quality block indicating which fields were extracted and which were absent from the filing. Cached for 7 days.

Get company officers (directors and secretaries)

Get the current and past officers for a UK company. Despite the tool name, not every entry is a director: the list is the full officer register, so each entry carries an officer_role such as 'director', 'secretary', 'corporate-secretary' or 'llp-member', plus an is_board_director boolean that is false for secretaries. Report each person by their own officer_role - never describe the whole list as directors. Each officer includes name, officer_role, is_board_director, appointment date, resignatio

Check ECCTA identity-verification compliance

Check a UK company's ECCTA identity-verification status - who has verified their identity with Companies House, who is still pending, and who is overdue. The Economic Crime and Corporate Transparency Act requires every director and PSC to verify their identity; enforcement begins 18 November 2026, after which unverified officers can block filings. Returns per-company counts (directors_total, directors_verified, directors_pending, directors_overdue) and the same for PSCs, plus unverified_persons

Get persons with significant control

Get the PSC (Persons with Significant Control) register for a UK company. Returns individuals, corporate entities, and legal persons who own 25%+ of shares, hold 25%+ of voting rights, or have significant influence or control. Each PSC includes decoded control types in plain English (e.g. 'Owns 25-50% of shares' instead of raw codes). Individual PSCs also carry ECCTA identity verification: verification_status (verified, pending, overdue or unknown), identity_verified, identity_verified_on, and v

Get a whole company in one request

Get several views of one UK company in a single request: profile, ECCTA compliance, financials, PSCs and directors. Prefer this over calling get_company, get_compliance, get_financials, get_psc and get_directors separately - it returns the same data for one API call and one credit instead of five, and in a single round trip. Pass include to fetch only the sections you need; omit it to get all five. The profile is always returned. Partial results are normal and are not errors: any section can com

Resolve PSC ownership chain to find ultimate beneficial owners

Trace the full ownership chain for a UK company by recursively following corporate entity PSCs. Returns a tree showing who ultimately controls the company - natural persons (UBOs), foreign entities, or legal persons - along with why each branch terminated. Each node has a terminal_reason: natural_person, foreign_entity, legal_person, super_secure, unverified_registry, unknown_kind, depth_limit, not_found, cycle_detected, or psc_exempt. Two of those are easy to misread: unverified_registry means

Get director network

Map the corporate network connected to a UK company via shared directors. Returns all companies connected through shared board members, up to the specified depth. Each connected company includes its name, number, status, and the directors it shares with the focal company. Useful for identifying corporate group structures, related party relationships, and director interlocks.