What business details must you display?
Companies Act 2006 & Company, Limited Liability Partnership and Business (Names and Trading Disclosures) Regulations 2015
When this applies
Limited companies must display their registered name, company number, and registered office address on all business correspondence including websites, emails, and invoices. This is a legal requirement regardless of business size.
When it does not apply
Companies Act disclosure requirements apply specifically to limited companies. Sole traders and partnerships have separate (lighter) trading name disclosure obligations.
What is at stake
Criminal offence for directors. Fines and Trading Standards enforcement.
What to do
Display your full registered company name, company number, and registered office address on your website, emails, letters, and invoices. The registered office must be a geographic address.
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Check your business →Reviewed: 2026-06-25 · Source: official guidance