Find exactly the companies you're looking for.

DataLedger is a UK company data platform. It turns Companies House filings into structured financials, ownership records and group structures, so you can find companies by the criteria that matter and receive them as a custom spreadsheet, through an API, through an MCP server for AI agents, or as a full export.

DataLedger combines Companies House financials with persons with significant control records. You can filter by industry, location, company size, owner type, approximate owner age and measures such as net assets, growth, debt and cash, then receive the shortlist as a spreadsheet, through the API or by asking an AI agent.

Filter for companies with an individual owner in a given age range, then add financial criteria such as net assets and growth. DataLedger records the approximate age of each person with significant control, so you can build a shortlist of owner-managed companies by owner age.

Yes. DataLedger follows the registered ownership chain up through parent companies to the ultimate owner, and lists the companies beneath a company too. Where the register ends at a trust or an overseas entity, the chain stops there and the record says so.

Yes. The API has a search endpoint that finds companies by name, and a company endpoint that returns the full profile in one call: accounts, owners, parent companies and subsidiaries. A search costs 1 credit, and a profile starts at 1 credit with extra credits for financials, owners, parents and children.

Yes. A custom dataset is delivered as an Excel or CSV file within 24 hours, ready to open in Excel or import into a CRM such as HubSpot or Salesforce. Datasets start at £295 for up to 5,000 companies.

Yes. The full export gives you every company and every field we hold under a commercial licence, so you can add your own data and do the filtering yourself. It comes as CSV or JSONL, whichever suits your systems, on files we host. We also provide monthly delta files showing new and changed records alongside the previous values. Accounts are updated daily, and ownership and company profiles monthly. Get in touch and we will scope it with you.

Yes. A spreadsheet from DataLedger can be given straight to an AI tool to build reports or add research. You can also connect an AI agent directly through the DataLedger MCP server, which has been tested with Claude and gives answers tied to filed records.

Yes. The free Companies House API returns raw filings one company at a time. DataLedger is built on the same open data and adds structured financials, ratios and growth, owner type and age, and ownership chains, with filtering across millions of companies.

Custom datasets start at £295 with financials, or £395 with PSC ownership included, for up to 5,000 companies. Delivery takes 24 hours, under a commercial licence. The API and MCP server are immediate once set up, with 25 free credits to start. After that you can buy one-off credit packs from £5 that never expire, or take a plan from £10 a month.

It is built only from open data sources, principally Companies House filings: electronically filed accounts and the PSC register. Financial figures exist for over 3 million companies that file accounts electronically, out of over 5 million on record. Counts change daily as new filings arrive.

Financials come from electronically filed accounts. Ownership is as registered at Companies House, and owner age is approximate. Turnover is only available where a company reports it, which can exclude many companies, so searches usually rely on net assets, growth, debt, cash and staff numbers instead.