Build with the DataLedger API

The DataLedger API for Developers

Clean, filterable UK company data. No scraping. No individual files. Just structured financials you can trust.

Build workflows, tools, and apps powered by standardised Companies House data.

With DataLedger, you get direct access to structured balance sheet info, company profiles, and filtering by geography, industry, and financial thresholds.

What You Get

  • Company Search
    Filter by location, industry (SIC), equity, asset size, or incorporation age.

  • Company Profile
    Address, incorporation date, entity officers, SIC codes, and more.

  • Financials
    Structured balance sheet fields - equity, total assets, liabilities, financial ratios.

  • Autocomplete
    Fast search endpoint for partial company names - ideal for forms or lookups.

Example Requests

🔎 Find companies in Manchester with over £1M equity and at least 24 employees

Filters by local authority and minimum equity.

GET /companies?local_authority=Westminster&min_equity=1000000r&min_employees=25

🏢 Get a company profile

Returns name, address, SIC, officers, incorporation date.

GET /company/12345678

🔤 Autocomplete company name

Search partial names - ideal for forms and CRMs.

GET /autocomplete?query=dataledger

Test it out

Use the interactive Swagger UI to test the API before writing a line of code.

See field names, filters, responses, and try real queries.

Integration Ideas

  • Enrich CRM records via Zapier or API triggers

  • Populate company data in your app or customer onboarding flow

  • Feed financial stats into dashboards (e.g. Power BI, Tableau)

  • Score companies based on financial stability or growth trends

Get Your API Key

We're currently offering free access to the beta. Once approved, you'll receive:

  • An API key with generous usage limits

  • Full documentation and examples

  • Access to new endpoints as they're released

Request Access Now