British accounts for a specific year

The detail of a British year. One register quirk to keep in mind: a company may change its accounting reference date, so two consecutive years do not always cover twelve months. Comparing two years without looking at their boundaries manufactures imaginary growth.

See a real response (free) Get the quote for /v1/eu/entreprise/GB/{company_number}/comptes/{date_cloture}

What the route returns

Catalogue description, exactly as agents read it:

One United Kingdom financial year from the iXBRL financial statements filed at Companies House: balance sheet (fixed and current assets, stocks, debtors, cash, creditors split by maturity, provisions, net assets, equity), average employees, the profit and loss when filed (turnover, operating, pre-tax and net result — most small companies file a balance sheet only), plus prior-year comparatives as published. Filing currency, null = not published, never zero. Open Government Licence v3.0.

Expected identifier

Company number, then the date_cloture returned by the listing.

A wrongly formatted identifier returns 400 and is not billed — but it costs you a round trip. It is the leading cause of failed calls on the foreign routes.

Extract from a genuinely paid response

Dated snapshot from 2026-07-29, truncated to one item per array. It is not live data. The full extract is served free of charge from the samples surface, and the schema from the OpenAPI document.

{
 "pays": "GB",
 "id_national": "07960839",
 "date_cloture": "2026-03-31",
 "exercice": {
  "date_cloture": "2026-03-31",
  "denomination": "National Consortium For Examination Results CIC",
  "devise": "GBP",
  "referentiel": "SmallEntities",
  "chiffre_affaires": 2257340,
  "resultat_exploitation": 144109,
  "resultat_net": 141386,
  "dettes_non_ventilees": 200582,
  "dettes_moins_un_an": null,
  "stocks": null,
  "exercice_precedent": {
   "chiffre_affaires": 1941115,
   "resultat_net": -45647
  }
 },
 "source": "Companies House — Free Accounts Data Product (download.companieshouse.gov.uk)",
 "licence": "Contains public sector information licensed under the Open Government Licence v3.0 (Companies House)"
}

Price and billing

Price: $0.05. The authoritative amount is the one in the 402 quote returned by the route itself — not this text, which derives from the same grid but is still just a page.

An error response cancels the payment: a 400, 404 or 503 is never billed. An upstream outage closes the route with a 503 rather than serving a degraded response.

Calling the route

# 1. Le devis, sans rien payer : la route répond 402 avec son montant
curl -i https://api.sirenic.eu/v1/eu/entreprise/GB/{company_number}/comptes/{date_cloture}

# 2. L'appel réglé — le client x402 paie le devis et rejoue la requête
npx x402-fetch https://api.sirenic.eu/v1/eu/entreprise/GB/{company_number}/comptes/{date_cloture}

# 3. Ou en MCP, dans Claude Code / Cursor / un agent
claude mcp add --transport http sirenic https://api.sirenic.eu/mcp

Neighbouring routes

• /v1/eu/entreprise/GB/{company_number}/comptes — $0.01

How you pay

Every route is paid per call, in USDC or EURC on the Base network, over the x402 protocol: no account to create, no API key, no subscription. The first call returns a 402 quote your client settles, then replays the call. A failed call is never billed.

Would you rather have a euro invoice and prepaid credits? That is in preparation, and we will not announce a date until it is open. Write to contact@sirenic.eu and we will let you know when it opens.

Paid responses are Ed25519-signed: you can later prove what was served to you, and when. The whole catalogue is free to read in the OpenAPI document and in llms.txt.

One call, end to end

# Client x402 (npm) — le devis 402 est réglé et l'appel rejoué automatiquement
npx x402-fetch https://api.sirenic.eu/v1/entreprise/552032534

# Ou en MCP, dans Claude Code / Cursor
claude mcp add --transport http sirenic https://api.sirenic.eu/mcp

Routes used and pricing

Take it further

No account to create, no key to request: the first step is free and shows you exactly what you would be buying.

See a real response (free) Get the quote for /v1/eu/entreprise/GB/{company_number}/comptes/{date_cloture} Get notified about euro packs

Read next

• Querying European company registers