Find exactly the companies you're looking for.

DataLedger is a UK company data platform that turns Companies House filings into structured financials, ownership records and group structures, so you can find the UK companies you need by the criteria that matter. It covers over 5 million UK companies and delivers data as a custom spreadsheet, an API, an MCP server for AI agents, or a full export.

Use DataLedger, which 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.

Describe the company you want in terms of sector, location, size, financial strength and ownership, and DataLedger returns the UK companies that match. A common search is owner-managed companies with a strong balance sheet and an owner aged 55 or over. Results come as a spreadsheet within 24 hours, or immediately through the API or 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 UK companies by owner age.

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

PSC stands for persons with significant control: the individuals or companies that own more than 25% of a UK company's shares or voting rights, or otherwise control it, and are registered at Companies House. DataLedger links PSC records to each company's financials, so you can filter on who owns a company and how it is performing.

Yes. The DataLedger 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 DataLedger 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 DataLedger full export gives you every UK company and every field DataLedger holds, under a commercial licence, so you can add your own data and do the filtering yourself. It comes as CSV or JSONL, on files DataLedger hosts, with monthly delta files showing new and changed records alongside the previous values. Accounts are updated daily, and ownership and company profiles monthly. Contact DataLedger to scope it.

Yes. A DataLedger spreadsheet 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 Companies House 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 UK companies.

DataLedger custom datasets cost £295 with financials, or £395 with PSC ownership included, for up to 5,000 companies. From 5,000 to 25,000 companies they cost £995 or £1,295, and larger datasets are quoted individually. Delivery takes 24 hours, under a commercial licence. The API and MCP server are immediate once set up, with 25 free credits to start, then one-off credit packs from £5 that never expire or plans from £10 a month.

DataLedger 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, so companies that file on paper have none. Ownership is as registered at Companies House, owner age is approximate, and there is no R&D data. Where a company's register entry ends at a trust or overseas entity, the ownership chain stops there.

Only where a company reports it. Many small UK companies file accounts without a profit and loss account, so turnover is missing for a large share of them. Searches therefore usually rely on net assets, growth, debt, cash and staff numbers, which are available for over 3 million companies. Turnover can be used as a filter in custom datasets, but not in API search.

A DataLedger custom dataset can be filtered on any field DataLedger holds: industry (SIC code), location, company age and status, and financial measures such as net assets, liabilities, cash, employees, debt ratios and growth. You can also filter on ownership, such as owner type, ownership band and approximate owner age. The API search covers the core filters, listed in the API docs.

Yes. The DataLedger API is always current, and the full export comes with monthly delta files showing new and changed records, with accounts updated daily and ownership and company profiles monthly. For a regular refresh of a custom dataset, contact DataLedger and it will be scoped with you.