What is this?
UK Company Map plots the registered office address of every live company on the Companies House register — around 5.6 million companies at 2.7 million unique addresses. Click any dot to see the full list of companies registered there, with status, incorporation date and nature of business, each linking to the official Companies House record.
Why do some addresses have thousands of companies?
The brightest dots on the map are usually the offices of company formation agents and registered-address services. A company's registered office doesn't have to be where it actually trades — it's just where official mail is served — so tens of thousands of companies can share a single street address. Some well-known hotspots have over 15,000 companies registered at one building. The map makes these clusters, and the geography of UK company registration generally, easy to explore.
How it works
The whole site is static — there is no server or database behind it. A monthly pipeline joins the free Companies House company data snapshot with postcode coordinates from the ONS Postcode Directory, dedupes the addresses, and packs the result into a PMTiles vector tileset plus a byte-range-addressable company index. Your browser fetches only the few kilobytes it needs for what's on screen.
Accuracy & limitations
Positions are postcode centroids (with a small scatter so addresses don't overlap), not exact building locations. Overseas registered offices are not mapped. Addresses are shown as filed: the same building can appear as separate dots when companies have filed it with different spellings. Data refreshes monthly from the official snapshot; company details link to Companies House for the authoritative, up-to-the-minute record.
Data & licences
Companies House data is Crown copyright, free to reuse. Postcode coordinates are from the ONS Postcode Directory: contains OS data © Crown copyright and database right 2026, Royal Mail data © Royal Mail copyright and database right 2026, and National Statistics data © Crown copyright and database right 2026, under the Open Government Licence. Northern Ireland postcode positions contain or are based upon Land & Property Services intellectual property © Crown copyright and database right 2026. Basemap © OpenStreetMap contributors.