# What London says it does

> Sixteen trades, ranked by how many companies claim them.

- Category: Money
- Cadence: annual
- Status: Published on a annual cadence.
- Dataset key: `company-industries`
- Source: [Companies House](https://developer.company-information.service.gov.uk/)
- Licence: Open Government Licence v3.0 — [terms](https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/)
- Canonical page: [https://londongraph.com/g/what-london-says-it-does](https://londongraph.com/g/what-london-says-it-does)
- Machine-readable record: [https://londongraph.com/data/what-london-says-it-does](https://londongraph.com/data/what-london-says-it-does)

## Methodology

Companies with a London registered office by SIC code, for a curated set of recognisable trades rather than all seven hundred codes. SIC is self-declared at incorporation and never audited, so this is what companies say they do rather than what they turn out to do — and a company may declare several.

## Visualisations

- [Recognisable trades](https://londongraph.com/g/what-london-says-it-does): Retain the curated exact-SIC ranking as a readable entry point.
- [All SIC sections](https://londongraph.com/g/what-london-says-it-does?view=sic-sections): Use treemap area to compare every top-level SIC section in the monthly live-company snapshot.
- [All SIC divisions](https://londongraph.com/g/what-london-says-it-does?view=sic-divisions): Compare the complete two-digit SIC division inventory rather than a hand-picked list.
- [Sector co-location](https://londongraph.com/g/what-london-says-it-does?view=sector-colocation): Count companies that declare SIC activities spanning each pair of broad sector groups. Caveat: This reflects multi-SIC registration within companies, not physical collaboration between firms.

## 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.