---
title: "Ms Sian Tamar Vivanti — Ownership Dossier"
canonical: https://whiteintel.dev/entity/ff110a46-e774-4a22-98da-4c065e8f33a5
json: https://whiteintel.dev/api/public/dossier/ff110a46-e774-4a22-98da-4c065e8f33a5
identifier: psc:89c9v5nSt8d08d7NAS3pN-Zlo-s
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Ms Sian Tamar Vivanti

**Type:** Person  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `psc:89c9v5nSt8d08d7NAS3pN-Zlo-s`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/ff110a46-e774-4a22-98da-4c065e8f33a5  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/ff110a46-e774-4a22-98da-4c065e8f33a5  

## Ownership & control

### Holdings / subsidiaries

- **HTFS HOLDINGS LTD** (beneficial owner) — https://whiteintel.dev/entity/0d70a0c9-da07-5565-90c0-0cbfc9bedff8

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Ms Sian Tamar Vivanti**. Human view: https://whiteintel.dev/entity/ff110a46-e774-4a22-98da-4c065e8f33a5 · Structured JSON: https://whiteintel.dev/api/public/dossier/ff110a46-e774-4a22-98da-4c065e8f33a5._

_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"._