# Where companies say they live

> The register's geography is dominated by shared offices and formation-agent addresses.

- Category: Money
- Cadence: monthly
- Status: Published on a monthly cadence.
- Dataset key: `company-districts`
- Source: [Companies House](https://download.companieshouse.gov.uk/en_output.html)
- Licence: Open Government Licence v3.0 — [terms](https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/)
- Canonical page: [https://londongraph.com/g/where-companies-say-they-live](https://londongraph.com/g/where-companies-say-they-live)
- Machine-readable record: [https://londongraph.com/data/where-companies-say-they-live](https://londongraph.com/data/where-companies-say-they-live)

## Methodology

Live companies in the official monthly Companies House bulk snapshot whose full registered-office postcode resolves to a London local authority, aggregated to postcode district. Colour is a 0–100 relative concentration index: 100 is the largest mapped postcode count, while selecting a cell reports the exact count and its share of the mapped London total. The cells are nearest-centroid tessellations for comparison, not Royal Mail boundaries. Read this as registered-office administration, not workplaces, jobs or output: shared offices and formation-agent addresses can dominate a district.

## Visualisations

- [Registered-office map](https://londongraph.com/g/where-companies-say-they-live): Map relative concentration while keeping the exact live-company count primary in details.
- [Concentration curve](https://londongraph.com/g/where-companies-say-they-live?view=concentration): Show how quickly mapped registered offices accumulate across postcode districts.
- [Shared-address diagnostic](https://londongraph.com/g/where-companies-say-they-live?view=shared-addresses): Compare the share of each district registered at its busiest full postcode. Caveat: Address concentration does not by itself identify a formation agent.
- [Scale vs sharing](https://londongraph.com/g/where-companies-say-they-live?view=scale-vs-sharing): Compare live-company count with busiest-postcode share.

## Citation guidance

Attribute the original publisher named above and identify LondonGraph as the visualisation and methodology layer. Do not describe live values as a historical census, and do not present placeholder values as observations.