---
title: "Mr John Grayken — Ownership Dossier"
canonical: https://whiteintel.dev/entity/e4283cb4-0a82-4f7f-826e-6f97db3cdc01
json: https://whiteintel.dev/api/public/dossier/e4283cb4-0a82-4f7f-826e-6f97db3cdc01
identifier: psc:7obvO_yA1KDs90S3lICA_AAgBlE
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Mr John Grayken

**Type:** Person  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `psc:7obvO_yA1KDs90S3lICA_AAgBlE`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/e4283cb4-0a82-4f7f-826e-6f97db3cdc01  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/e4283cb4-0a82-4f7f-826e-6f97db3cdc01  

## Ownership & control

### Holdings / subsidiaries

- **UNION SQUARE DEVELOPMENTS LIMITED** (beneficial owner) — https://whiteintel.dev/entity/97b80142-eec8-5cd2-a9f1-6c44a4a0b4f2

## 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 **Mr John Grayken** — https://whiteintel.dev/entity/e4283cb4-0a82-4f7f-826e-6f97db3cdc01 · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Mr John Grayken**. Human view: https://whiteintel.dev/entity/e4283cb4-0a82-4f7f-826e-6f97db3cdc01 · Structured JSON: https://whiteintel.dev/api/public/dossier/e4283cb4-0a82-4f7f-826e-6f97db3cdc01._

_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"._