---
title: "John Warner — Ownership Dossier"
canonical: https://whiteintel.dev/entity/74cd2e4b-54a2-5617-b5e6-d8067b9c7a9b
json: https://whiteintel.dev/api/public/dossier/74cd2e4b-54a2-5617-b5e6-d8067b9c7a9b
identifier: oo-person:GB-COH-PER-OC416373-g4YnHwAUGvsBM2ALI0pRuZ9DKLY
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# John Warner

**Type:** Person  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `oo-person:GB-COH-PER-OC416373-g4YnHwAUGvsBM2ALI0pRuZ9DKLY`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/74cd2e4b-54a2-5617-b5e6-d8067b9c7a9b  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/74cd2e4b-54a2-5617-b5e6-d8067b9c7a9b  

## Ownership & control

### Holdings / subsidiaries

- **BARBER HARRISON & PLATT ADVISORY LLP** (beneficial owner) — 50% — https://whiteintel.dev/entity/2994ca26-c068-5e8a-945d-e651d8a538f5

## Sanctions / PEP screening (name match — unverified)

These are possible matches **by name only** — not confirmed as the same person/entity. Verify identity (date of birth, nationality, ID) before relying on this.

- **PEP** — [Name matches a screened record — verify against the cited sources](https://whiteintel.dev/entity/03b27a7e-996f-4cd7-b748-94bea9cc5b11)
- **PEP** — [Name matches a screened record — verify against the cited sources](https://whiteintel.dev/entity/46a1cf77-165f-4662-b6c3-15b38677fa8e)
- **PEP** — [Name matches a screened record — verify against the cited sources](https://whiteintel.dev/entity/62e611f8-da52-57ff-9e6b-adc1a0137fcf)
- **PEP** — [Name matches a screened record — verify against the cited sources](https://whiteintel.dev/entity/8b883d6d-7ae5-454c-a3e4-257d67ddfc52)

## Provenance

- OpenOwnership — https://www.openownership.org

## Get the full, resolved dossier (agent-callable)

The above is the free teaser. The resolved **multi-hop UBO chain**, ownership **%**, full **financial history**, itemised **assets** and the hop-by-hop **exposure path** are the paid depth — callable as tools from your agent:

```bash
npx -y @whiteintel/mcp-server   # then: get_dossier · trace_ownership_path · check_offshore_exposure
```

Or unlock a one-off cited dossier for **John Warner** — https://whiteintel.dev/entity/74cd2e4b-54a2-5617-b5e6-d8067b9c7a9b · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **John Warner**. Human view: https://whiteintel.dev/entity/74cd2e4b-54a2-5617-b5e6-d8067b9c7a9b · Structured JSON: https://whiteintel.dev/api/public/dossier/74cd2e4b-54a2-5617-b5e6-d8067b9c7a9b._

_Risk levels are heuristic investigative leads, not legal determinations of beneficial ownership. Every claim carries a source; an absent edge means "not yet observed in current sources", not "does not exist"._