Companies House maintains the UK register of companies. There are four offices — the main office in Cardiff and regional offices in Edinburgh, Belfast and London.
Most Companies House tasks can be done online — no need to visit an office or post documents.
| Document / Purpose | Address |
|---|---|
| All documents (England, Wales, Scotland, Northern Ireland) | Companies House, Crown Way, Cardiff CF14 3UZ |
| Scotland — alternative filing address | Companies House, Fourth Floor, Edinburgh Quay 2, 139 Fountainbridge, Edinburgh EH3 9FF |
| Northern Ireland — alternative filing address | Companies House, Second Floor, The Linenhall, 32-38 Linenhall Street, Belfast BT2 8BG |
| Default registered office address | PO Box 4385, [Company number]: Companies House default address, Cardiff CF14 8LH |
Companies House is the executive agency of the UK government responsible for incorporating and dissolving limited companies, registering company information and making it publicly available. As of May 2025, the register contains over 5.44 million active companies.
All information on the Companies House register is publicly available and free to search at find-and-update.company-information.service.gov.uk. This includes directors' names and dates of birth (month and year only), registered addresses, filed accounts, confirmation statements and charges.
From November 2025, all company directors and persons with significant control (PSCs) must verify their identity with Companies House. This can be done directly via GOV.UK or through an authorised corporate service provider.