Companies House Office Address Locations and Contact Guide

Companies House is the UK’s registrar of companies and is an executive agency of the Department for Business and Trade. While the vast majority of filings are now handled through their digital services, there are still instances where physical documents must be delivered or legal notices must be served. Companies House maintains four primary office locations across the United Kingdom, each serving specific jurisdictional and administrative functions.

1. The Main Registrar: Cardiff (England and Wales)

The Cardiff office is the primary headquarters for Companies House. It handles the registration and dissolution of all companies incorporated in England and Wales. This is the largest facility and manages the bulk of the UK's corporate data processing.

Address: Companies House, Crown Way, Cardiff, CF14 3UZ.

If you are hand-delivering documents, this office traditionally provides a 24-hour drop-box service, though it is always advisable to check current building access hours for in-person queries.

2. The Information Centre: London

The London office serves as a strategic hub and information centre. While it does not process the same volume of manual filings as the Cardiff headquarters, it provides a vital link for businesses operating within the capital.

It is frequently used for the service of legal documents and as a contact point for high-level government liaison.

Address: Companies House, 22nd Floor, The Shard, 32 London Bridge Street, London, SE1 9SG.

Note: Access to the London office in The Shard is strictly controlled. Most routine filings for London-based companies are still directed to the Cardiff processing centre.

3. The Registrar for Scotland: Edinburgh

Companies incorporated in Scotland are governed by the Registrar in Edinburgh. If your company has a registered office in Scotland, your statutory documents and paper-based applications must be sent to this specific branch rather than the Cardiff office.

Address: Companies House, Fourth Floor, Edinburgh Quay 2, 139 Fountainbridge, Edinburgh, EH3 9FF.

This office ensures that Scottish corporate entities remain compliant with both the UK-wide Companies Act and specific Scottish legal nuances.

4. The Registrar for Northern Ireland: Belfast

Northern Ireland maintains its own registrar within the Companies House framework. Companies incorporated in Northern Ireland must direct their correspondence and paper filings to the Belfast office to ensure they are recorded on the correct regional register.

Address: Companies House, Second Floor, The Linenhall, 32-38 Linenhall Street, Belfast, BT2 8BG.

The Move Toward Digital Filing

It is important to note that in 2026, Companies House has significantly reduced its reliance on physical office visits. Under the Economic Crime and Corporate Transparency Act, most companies are now mandated to file their annual accounts and confirmation statements digitally. Physical addresses are increasingly becoming hubs for legal service and administrative oversight rather than public walk-in centres.

Which Office Should You Use?

The office you correspond with is determined by the jurisdiction of your company’s incorporation:

England and Wales: Use the Cardiff office.

Scotland: Use the Edinburgh office.

Northern Ireland: Use the Belfast office.

Sending documents to the wrong regional office can lead to significant delays in processing, which may result in late filing penalties.

The Bottom Line

While Companies House offices are located in Cardiff, London, Edinburgh, and Belfast, the digital-first approach means most interactions happen online. However, knowing the correct physical location for your jurisdiction is essential for legal compliance and the delivery of time-sensitive statutory documents.

Disclaimer: The information provided in this article is for general informational and research purposes only. Company details, features, services, and market positions may change over time. Readers are advised to visit official company websites and conduct independent research before making any business decisions or purchasing services.