Every source, named. That’s the point.

The statutory and public registers

HM Land Registry — CCOD & registered leases — The public register of leasehold interests and corporate ownership in England and Wales: lease starts, terms and expiries, resolved to companies by registered number. Refresh: Monthly releases.

Companies House — Filings, officers and appointments, PSC changes, iXBRL accounts (including lease-commitment disclosures) — plus the real-time filing stream. Refresh: Real-time stream + daily enrichment.

VOA rating list — The Valuation Office Agency’s non-domestic rating list: rateable values and floor areas for the demises companies actually occupy. Refresh: Monthly.

London borough business rates — Borough-published rates datasets — who is the liable ratepayer at which premises. Occupation evidence, not inference. Refresh: Per borough’s publication cycle.

Planning London Datahub + borough portals — Planning applications across London, classified by displacement grade — whole-building consents at occupied addresses surface every affected tenant. Refresh: Weekly.

EPC register — Energy certificates for non-domestic buildings: ratings, floor areas, inspection dates — the MEES-pressure signal, and fresh lodgements as a letting/works precursor. Refresh: Weekly register diff + daily enrichment.

The Gazette — The official public record: insolvency, winding-up and strike-off notices — the risk signals a caller needs before dialling. Refresh: Daily.

Ordnance Survey (UPRN / TOID) — Unique property and building identifiers. Signal resolves companies to actual buildings, not address strings — so a lease, a consent and a rates record at the same building genuinely connect. Refresh: Periodic OS releases.

Public press & agent wires — Reported requirements, lettings and moves — treated as claims until an independent register corroborates them, and always cited by link. Refresh: Daily.

Company websites — read by SignalBot

Where a company’s own public website states an operational address or office fact, our identified crawler reads it. SignalBot visits public pages only, honours robots.txt and opt-outs, and never collects personal data or anything behind a login. Full details, including how to opt out: the SignalBot page.

The commercial layer — labelled as such

Decision-maker contact details (names, business emails and phone numbers) and supplementary firmographics (headcount trends, hiring activity) come from compliant business-to-business data providers under their own lawful bases, with opt-outs honoured. We keep this layer distinct from the registers above: registers establish what is happening; the commercial layer helps you reach the right person about it.

Customer outcome feedback

Customers record what happened to the leads they pursued — moved, renewed, not a fit. That feedback recalibrates the model’s weights over time. Each customer’s outcomes are private to them: never shared with, visible to, or citable by anyone else.

How the sources combine

No single source is trusted alone. A press report is a claim until a register corroborates it; a lease expiry is a clock, not an intention; an address match must resolve to the same UPRN before two records connect. Every scored lead shows the specific register entries behind it — a caller can defend every claim in conversation, because we can.