---
title: "Mr John Ramsey Mccallum — Ownership Dossier"
canonical: https://whiteintel.dev/entity/65506d27-746a-4e7d-920a-c615f5a89ed4
json: https://whiteintel.dev/api/public/dossier/65506d27-746a-4e7d-920a-c615f5a89ed4
identifier: psc:iBoEFXn2nyglQICXeh2q5nssrPE
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Mr John Ramsey Mccallum

**Type:** Person  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `psc:iBoEFXn2nyglQICXeh2q5nssrPE`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/65506d27-746a-4e7d-920a-c615f5a89ed4  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/65506d27-746a-4e7d-920a-c615f5a89ed4  

## Ownership & control

### Holdings / subsidiaries

- **25 HARRINGTON ROAD LIMITED** (beneficial owner) — https://whiteintel.dev/entity/123a958c-c6ea-504e-8a06-ec3b0224fc82

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Mr John Ramsey Mccallum**. Human view: https://whiteintel.dev/entity/65506d27-746a-4e7d-920a-c615f5a89ed4 · Structured JSON: https://whiteintel.dev/api/public/dossier/65506d27-746a-4e7d-920a-c615f5a89ed4._

_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"._