United Kingdom Company Check

Check any United Kingdom legal entity by its Companies House company number in one call and get a clean English JSON answer with red flags, source attribution and a date on every field. Built for AI agents (MCP) and for KYB / AML onboarding, counterparty and supplier due diligence, vendor risk and compliance checks.

• One number → one answer from official open registers plus GLEIF Global LEI Index: Level 1 (LEI-CDF), Level 2 (RR-CDF), Reporting Exceptions and Official sanctions lists: US OFAC (SDN and Consolidated non-SDN), EU consolidated financial sanctions (FSF), UK Sanctions List (FCDO) — legal entities only.
• One schema for every country: the same fields and flags whether you check one United Kingdom company or a thousand — your agent parses one format.
• Agent-ready: an MCP server (Streamable HTTP, /mcp) with check_company, check_companies and list_sources, a plain GET /check?country=&id= endpoint, and classic batch runs (list of numbers → dataset).
• Change history: registers publish only the current state; we keep our own snapshots, so every answer shows what was added or removed since history_since (e.g. a status change or a new sanctions listing).
• Pay per check (one charge per company answered; the price is on the Pricing tab), no subscription. Malformed numbers, sole traders and individuals are not charged. In Standby (MCP / HTTP) mode Apify also bills the small platform usage of the server run, as for every Standby Actor. Set a maximum cost per run in Apify to cap spending: when it is reached, the Actor returns an error instead of data.

What we check

Source	Licence	Publisher updates
Companies House (UK): Free Company Data Product — basic company data of all live companies on the register (monthly snapshot) (GB)	Several, see Data licences	monthly
GLEIF Global LEI Index: Level 1 (LEI-CDF), Level 2 (RR-CDF), Reporting Exceptions	CC0 1.0	daily
Official sanctions lists: US OFAC (SDN and Consolidated non-SDN), EU consolidated financial sanctions (FSF), UK Sanctions List (FCDO) — legal entities only	Several, see Data licences	daily

Data refreshed at least weekly (from the latest published files: the United Kingdom register is published monthly, so its data can be up to a month old); every field carries its source date (provenance), and every answer lists each source with the date it was loaded (sources[].loaded_at; list_sources is free).

flags — true is a red flag: not_found (the number is not in the register dump), not_active, insolvency, liquidation, sanctions (match by registration number or LEI), sanctions_name_match (same name, same country: verify manually). false means there is no record in the loaded snapshot — it is not a clean bill of health. null means unknown. Call list_sources (free) for load times.

United Kingdom: Companies House Free Company Data Product lists live companies only (incl. those in liquidation, administration or with a strike-off proposal); a company dissolved before our first snapshot is absent, so no record means unknown. A valid Companies House company number without a record therefore returns not_found: null (unknown, not fictitious) and is not charged.

Identifiers

Country	Identifier	Format	Example
United Kingdom (GB)	Companies House company number	8 characters: 8 digits, or a 2-letter prefix (SC, NI, OC, LP, SL, OE, FC, …) and 6 digits; shorter numbers are zero-padded	00102498

Spaces, dashes and a country prefix are accepted. Legal entities only: sole traders and other natural persons are not supported, not stored and not charged. No data about people (officers, owners, contacts) is ever returned; addresses are city level only.

Input

{
  "country": "GB",
  "ids": [
    "00102498"
  ]
}

Up to 10,000 numbers per run.

Output (one dataset item per company, shortened)

{
  "country": "GB",
  "id": "00102498",
  "id_scheme": "GB-COH",
  "name": "…",
  "status": "active",
  "legal_form": {
    "code": "…",
    "name": "…",
    "name_en": "…"
  },
  "address": {
    "city": "…",
    "country": "GB"
  },
  "flags": {
    "not_found": false,
    "not_active": false,
    "insolvency": false,
    "liquidation": false,
    "sanctions": false,
    "sanctions_name_match": false
  },
  "provenance": {
    "status": {
      "source": "register",
      "as_of": "2026-11-05T03:00:00+00:00"
    }
  },
  "history": [],
  "history_since": "2026-11-05",
  "sources": [
    {
      "key": "register",
      "title": "…",
      "license": "…",
      "loaded_at": "…"
    }
  ],
  "disclaimer": "… Not legal advice."
}

Use from an AI agent (MCP)

Add the Actor as a remote MCP server: https://kyb-data--united-kingdom-company-check.apify.actor/mcp with your Apify token, or through mcp.apify.com. Tools: check_company(company_id, country), check_companies(company_ids, country) (up to 50), list_sources().

Data licences

All data comes from official open sources under open licences; attribution (title, dataset URL, licence, loaded_at) is included in the sources field of every answer.

• Companies House (UK): Free Company Data Product — basic company data of all live companies on the register (monthly snapshot): Companies House public register information: "Companies House imposes no rules or requirements on how the information on the public register is used." (Companies House, "Our public task, copyright and Crown copyright", read 2026-11-05); listed on data.gov.uk as Creative Commons Attribution. Source: Companies House. (licence text: www.gov.uk/government/publications/companies-house-accreditation-to-information-fair-traders-scheme/public-task-copyright-and-crown-copyright)
• GLEIF Global LEI Index: Level 1 (LEI-CDF), Level 2 (RR-CDF), Reporting Exceptions: CC0 1.0 (GLEIF LEI Data Terms of Use, II.3: "The data available through the Access Service are provided under the CC0 licence"; read 2026-11-05)
• Official sanctions lists: US OFAC (SDN and Consolidated non-SDN), EU consolidated financial sanctions (FSF), UK Sanctions List (FCDO) — legal entities only: OFAC: US government work, not subject to copyright (17 U.S.C. 105); EU FSF: © European Union, reuse authorised with acknowledgement (Commission Decision 2011/833/EU, CC BY 4.0); UK: contains public sector information licensed under the Open Government Licence v3.0 (FCDO) (licence text: www.nationalarchives.gov.uk/doc/open-government-licence/version/3)

Disclaimer

Data from official open registers and official sanctions lists, as attributed in sources, as of the load date shown. Registers can be incomplete or late. Not legal advice — verify important decisions with the original register.