---
title: "Callum John Windsor — Ownership Dossier"
canonical: https://whiteintel.dev/entity/b2371acf-2804-4ddd-b39e-5fd573847e10
json: https://whiteintel.dev/api/public/dossier/b2371acf-2804-4ddd-b39e-5fd573847e10
identifier: psc:pBwf7TWoHMPxjKRWH__tXooI5ts
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Callum John Windsor

**Type:** Person  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `psc:pBwf7TWoHMPxjKRWH__tXooI5ts`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/b2371acf-2804-4ddd-b39e-5fd573847e10  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/b2371acf-2804-4ddd-b39e-5fd573847e10  

## Ownership & control

### Holdings / subsidiaries

- **J.C.G PRECISION MASONRY LTD** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/1ae3ef2a-6cbe-4e69-b4d4-b3916aa73589

## 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 **Callum John Windsor** — https://whiteintel.dev/entity/b2371acf-2804-4ddd-b39e-5fd573847e10 · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Callum John Windsor**. Human view: https://whiteintel.dev/entity/b2371acf-2804-4ddd-b39e-5fd573847e10 · Structured JSON: https://whiteintel.dev/api/public/dossier/b2371acf-2804-4ddd-b39e-5fd573847e10._

_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"._