---
title: "Mr Maciej Grzegorz Umpirowicz — Ownership Dossier"
canonical: https://whiteintel.dev/entity/14ca26ee-1761-448e-99d2-e15e08cdd2e0
json: https://whiteintel.dev/api/public/dossier/14ca26ee-1761-448e-99d2-e15e08cdd2e0
identifier: psc:QUGcFjh-L59uX1XG938wBv4jSLs
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Mr Maciej Grzegorz Umpirowicz

**Type:** Person  
**Jurisdiction:** GB  
**Identifier:** `psc:QUGcFjh-L59uX1XG938wBv4jSLs`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/14ca26ee-1761-448e-99d2-e15e08cdd2e0  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/14ca26ee-1761-448e-99d2-e15e08cdd2e0  

## Ownership & control

### Holdings / subsidiaries

- **M & KM LTD** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/6096b730-7452-5a32-a3ea-922ff51e2ad6

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Mr Maciej Grzegorz Umpirowicz**. Human view: https://whiteintel.dev/entity/14ca26ee-1761-448e-99d2-e15e08cdd2e0 · Structured JSON: https://whiteintel.dev/api/public/dossier/14ca26ee-1761-448e-99d2-e15e08cdd2e0._

_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"._