---
title: "RADONSARK LTD — Ownership Dossier"
canonical: https://whiteintel.dev/entity/773afa40-1396-5400-a294-69f94cd7f7c0
json: https://whiteintel.dev/api/public/dossier/773afa40-1396-5400-a294-69f94cd7f7c0
identifier: oo:GB-COH-15554643
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# RADONSARK LTD

**Type:** Company  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `oo:GB-COH-15554643`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/773afa40-1396-5400-a294-69f94cd7f7c0  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/773afa40-1396-5400-a294-69f94cd7f7c0  

## Ownership & control

### Owners / controllers

- **Mrs Joan Mcdermott** (beneficial owner) — https://whiteintel.dev/entity/b516e708-4028-5633-a10d-8faa377d29b1
- **Mr Andrew James Mcdermott** (beneficial owner) — 100% — https://whiteintel.dev/entity/40b76c26-fdae-54e5-95ab-37bae1aee181
- **Mr Andrew James Mcdermott** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/1b2e14b8-6a4c-4893-9632-9b46e2f69b8e
- **Mrs Joan Mcdermott** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/1eb86e05-1593-405d-be1e-e6896d337c3d

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

A **4-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:** `15554643`
- **Status:** active
- **Type:** ltd
- **Incorporated:** 2024-03-11
- **Registered office:** Flat 20 Burnham Court, Moscow Road, London, W2 4SW, United Kingdom
- **SIC:** 69201

### Officers

- MCDERMOTT, Joan — director · Irish · appointed 2025-01-01
- MCDERMOTT, Andrew James — director · British · appointed 2024-03-11 · resigned 2025-01-02

### Beneficial owners (Persons with Significant Control)

- Mrs Joan Mcdermott — 75–100% shares · individual PSC · United Kingdom — since 2025-01-01
- Mr Andrew James Mcdermott — 75–100% shares · individual PSC · United Kingdom — ceased 2025-01-02

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/15554643
- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/15554643

## 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 **RADONSARK LTD** — https://whiteintel.dev/entity/773afa40-1396-5400-a294-69f94cd7f7c0 · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **RADONSARK LTD**. Human view: https://whiteintel.dev/entity/773afa40-1396-5400-a294-69f94cd7f7c0 · Structured JSON: https://whiteintel.dev/api/public/dossier/773afa40-1396-5400-a294-69f94cd7f7c0._

_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"._