---
title: "Mr Mark Callahan — Ownership Dossier"
canonical: https://whiteintel.dev/entity/b5d668cd-1ba0-4e88-8cb4-1cb361ef52df
json: https://whiteintel.dev/api/public/dossier/b5d668cd-1ba0-4e88-8cb4-1cb361ef52df
identifier: psc:_pr1GDAlEoJOPzfsSxtzHuinMmQ
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Mr Mark Callahan

**Type:** Person  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `psc:_pr1GDAlEoJOPzfsSxtzHuinMmQ`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/b5d668cd-1ba0-4e88-8cb4-1cb361ef52df  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/b5d668cd-1ba0-4e88-8cb4-1cb361ef52df  

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Mr Mark Callahan**. Human view: https://whiteintel.dev/entity/b5d668cd-1ba0-4e88-8cb4-1cb361ef52df · Structured JSON: https://whiteintel.dev/api/public/dossier/b5d668cd-1ba0-4e88-8cb4-1cb361ef52df._

_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"._