---
title: "Helen Ruth Costello — Ownership Dossier"
canonical: https://whiteintel.dev/entity/96c192ef-2d10-41fb-a1d4-37ddcd854a04
json: https://whiteintel.dev/api/public/dossier/96c192ef-2d10-41fb-a1d4-37ddcd854a04
identifier: psc:eXs0_vkW5PyB7umAz5p9-lilukU
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Helen Ruth Costello

**Type:** Person  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `psc:eXs0_vkW5PyB7umAz5p9-lilukU`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/96c192ef-2d10-41fb-a1d4-37ddcd854a04  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/96c192ef-2d10-41fb-a1d4-37ddcd854a04  

## Ownership & control

### Holdings / subsidiaries

- **BERKHAMSTED GARDEN SERVICES LTD** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/5e14817d-d564-4fb2-a9f9-88d74509d7de

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Helen Ruth Costello**. Human view: https://whiteintel.dev/entity/96c192ef-2d10-41fb-a1d4-37ddcd854a04 · Structured JSON: https://whiteintel.dev/api/public/dossier/96c192ef-2d10-41fb-a1d4-37ddcd854a04._

_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"._