They seem to be available via the web interface now (28/08/2024 10:55):
… and I can indeed get this via the API (company profile):
curl -u API_KEY_HERE: "https://api.company-information.service.gov.uk/company/15916559"
{"accounts":{"accounting_reference_date":{"day":"31","month":"08"},"next_accounts":{"due_on":"2026-05-26","overdue":false,"period_end_on":"2025-08-31","period_start_on":"2024-08-26"},"next_due":"2026-05-26","next_made_up_to":"2025-08-31","overdue":false},"can_file":true,"company_name":"ITECH ELY LTD","company_number":"15916559","company_status":"active","confirmation_statement":{"next_due":"2025-09-08","next_made_up_to":"2025-08-25","overdue":false},"date_of_creation":"2024-08-26","etag":"e8f98c15c01a87450f099fda8a07b624c42d73af","has_charges":false,"has_insolvency_history":false,"jurisdiction":"england-wales","links":{"persons_with_significant_control":"/company/15916559/persons-with-significant-control","self":"/company/15916559","filing_history":"/company/15916559/filing-history","officers":"/company/15916559/officers"},"registered_office_address":{"address_line_1":"23 High Street","country":"England","locality":"Ely","postal_code":"CB7 4LQ"},"registered_office_is_in_dispute":false,"sic_codes":["47421","62020"],"type":"ltd","undeliverable_registered_office_address":false,"has_super_secure_pscs":false}
Are you getting an error / non-200 http response code? Can you access other companies? What is the full URL of the endpoint you’re calling?