---
title: "Mr Mark Glen Sandiford — Ownership Dossier"
canonical: https://whiteintel.dev/entity/3cc25dbf-b367-475b-9c91-41aaec71589d
json: https://whiteintel.dev/api/public/dossier/3cc25dbf-b367-475b-9c91-41aaec71589d
identifier: psc:55WN5sVT2wg-tjByBVoevgIoGCg
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Mr Mark Glen Sandiford

**Type:** Person  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `psc:55WN5sVT2wg-tjByBVoevgIoGCg`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/3cc25dbf-b367-475b-9c91-41aaec71589d  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/3cc25dbf-b367-475b-9c91-41aaec71589d  

## Ownership & control

### Holdings / subsidiaries

- **HEYWOOD DUCTING SERVICES LTD** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/ee365f08-e13c-578e-bf46-af4622848a78

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Mr Mark Glen Sandiford**. Human view: https://whiteintel.dev/entity/3cc25dbf-b367-475b-9c91-41aaec71589d · Structured JSON: https://whiteintel.dev/api/public/dossier/3cc25dbf-b367-475b-9c91-41aaec71589d._

_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"._