---
title: "MECHANICAL SERVICES SW LIMITED — Ownership Dossier"
canonical: https://whiteintel.dev/entity/eaab735b-ba41-5992-ae20-3df40a84b831
json: https://whiteintel.dev/api/public/dossier/eaab735b-ba41-5992-ae20-3df40a84b831
identifier: oo:GB-COH-15240543
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# MECHANICAL SERVICES SW LIMITED

**Type:** Company  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `oo:GB-COH-15240543`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/eaab735b-ba41-5992-ae20-3df40a84b831  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/eaab735b-ba41-5992-ae20-3df40a84b831  

## Ownership & control

### Owners / controllers

- **Jonathan James Donald** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/e72e07d9-bf8b-4db9-ac96-b53c9c7fc0ad
- **Fiona Elizabeth Donald** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/fb40e737-cfb6-4f2f-9f53-e8d9e0eea7c9

### 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:** `15240543`
- **Status:** active
- **Type:** ltd
- **Incorporated:** 2023-10-27
- **Registered office:** C3 Apollo Court, Neptune Park, Plymouth, PL4 0SJ, England
- **SIC:** 43220

### Officers

- DONALD, Fiona Elizabeth — director · British · appointed 2023-10-27
- DONALD, Jonathan James — director · British · appointed 2023-10-27

### Beneficial owners (Persons with Significant Control)

- Fiona Elizabeth Donald — 25–50% shares · individual PSC · United Kingdom — since 2023-10-27
- Jonathan James Donald — 25–50% shares · individual PSC · United Kingdom — since 2023-10-27

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/15240543
- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/15240543

## 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 **MECHANICAL SERVICES SW LIMITED** — https://whiteintel.dev/entity/eaab735b-ba41-5992-ae20-3df40a84b831 · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **MECHANICAL SERVICES SW LIMITED**. Human view: https://whiteintel.dev/entity/eaab735b-ba41-5992-ae20-3df40a84b831 · Structured JSON: https://whiteintel.dev/api/public/dossier/eaab735b-ba41-5992-ae20-3df40a84b831._

_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"._