---
title: "POLYLINE HOLDINGS LTD — Ownership Dossier"
canonical: https://whiteintel.dev/entity/d511b1c6-35d4-4967-aeef-b4fca060a2b1
json: https://whiteintel.dev/api/public/dossier/d511b1c6-35d4-4967-aeef-b4fca060a2b1
identifier: gb-coh:16714414
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# POLYLINE HOLDINGS LTD

**Type:** Company  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `gb-coh:16714414`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/d511b1c6-35d4-4967-aeef-b4fca060a2b1  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/d511b1c6-35d4-4967-aeef-b4fca060a2b1  

## Ownership & control

### Owners / controllers

- **Mrs Helen Mary Mason** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/818bf75c-9634-496c-b575-e359ac616fc6
- **Mr Gerard Mason** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/d31b09be-42f1-4aca-89dd-5784fbc8b862

### UBO chain (walk to the ultimate owner)

A **2-step** ownership/control chain to the ultimate beneficial owner is resolved for this entity. The full cited chain unlocks with a paid API key or a one-off dossier — https://whiteintel.dev/pricing.

## Company profile (live · UK Companies House)

- **Company number:** `16714414`
- **Status:** active
- **Type:** ltd
- **Incorporated:** 2025-09-12
- **Registered office:** Unit 4-8 Widnes Business Park Foundry Lane, Widnes, Cheshire, WA8 8UB, United Kingdom
- **SIC:** 64209

### Officers

- MASON, Gerard — director · British · appointed 2025-09-12
- MASON, Helen Mary — director · British · appointed 2025-09-12

### Beneficial owners (Persons with Significant Control)

- Mrs Helen Mary Mason — 25–50% shares · individual PSC · United Kingdom — since 2025-09-12
- Mr Gerard Mason — 25–50% shares · individual PSC · United Kingdom — since 2025-09-12

## Provenance

- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/16714414

## Get the full, resolved dossier (agent-callable)

The above is the free teaser. The resolved **multi-hop UBO chain**, ownership **%**, full **financial history**, itemised **assets** and the hop-by-hop **exposure path** are the paid depth — callable as tools from your agent:

```bash
npx -y @whiteintel/mcp-server   # then: get_dossier · trace_ownership_path · check_offshore_exposure
```

Or unlock a one-off cited dossier for **POLYLINE HOLDINGS LTD** — https://whiteintel.dev/entity/d511b1c6-35d4-4967-aeef-b4fca060a2b1 · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **POLYLINE HOLDINGS LTD**. Human view: https://whiteintel.dev/entity/d511b1c6-35d4-4967-aeef-b4fca060a2b1 · Structured JSON: https://whiteintel.dev/api/public/dossier/d511b1c6-35d4-4967-aeef-b4fca060a2b1._

_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"._