---
title: "PLESSEY HOLDINGS LIMITED — Ownership Dossier"
canonical: https://whiteintel.dev/entity/ceafe74b-9da3-5185-8cf9-e67e43108726
json: https://whiteintel.dev/api/public/dossier/ceafe74b-9da3-5185-8cf9-e67e43108726
identifier: oo:GB-COH-00609503
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# PLESSEY HOLDINGS LIMITED

**Type:** Company  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `oo:GB-COH-00609503`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/ceafe74b-9da3-5185-8cf9-e67e43108726  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/ceafe74b-9da3-5185-8cf9-e67e43108726  

## Ownership & control

### Owners / controllers

- **Siemens Aktiengesellschaft** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/5b7debb4-83f3-4ff8-acc7-38f626d658c5
- **Tusk Corporation Limited** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/a743106d-38e0-4415-86e7-b183243d5d79

### 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:** `00609503`
- **Status:** active
- **Type:** ltd
- **Incorporated:** 1958-08-12
- **Registered office:** Pinehurst 2 Pinehurst Road, Farnborough, Hampshire, GU14 7BF, United Kingdom
- **SIC:** 70100

### Officers

- KAHANOV, Sharon Hana — secretary · appointed 2020-06-01
- BAKER, Alfred Rayfield — director · American · appointed 2019-08-01
- WEBBERLEY, Mark Andrew — director · British · appointed 2012-01-06
- CARLESS, Helen Claire — secretary · British · appointed 2012-03-27 · resigned 2016-08-01
- DAVINA, Simone Eufemia Agatha — secretary · appointed 2016-08-31 · resigned 2020-06-01
- HOWARD, Ian Philip — secretary · British · resigned 2012-03-27
- DONALDSON, Craig George — director · British · appointed 2009-06-01 · resigned 2016-03-31
- GENT, Gerard Thomas — director · British · appointed 2008-03-12 · resigned 2012-01-31
- GERDINE, Philip Van Horn, Dr — director · American · resigned 1998-07-31
- GREEN, Heather Marie — director · British · appointed 2016-03-31 · resigned 2025-03-31
- GRIMMER, Franz Josef Philipp Heinrich — director · German · resigned 1997-10-15
- HARRIS, Paul Michael — director · British · appointed 2007-04-30 · resigned 2011-03-31
- HOWARD, Ian Philip — director · British · resigned 2013-12-31
- LESTER, Michael — director · British  · resigned 1999-11-29
- MCGEEVER, Claire Margaret — director · British · appointed 2008-04-21 · resigned 2009-05-31
- METCALFE, Christopher Ellis — director · British · appointed 2011-03-31 · resigned 2012-01-06
- MEYERS, Kenneth Robert — director · American · appointed 2013-12-31 · resigned 2019-07-31
- NEWLANDS, David Baxter — director · British · resigned 1997-07-07
- ROBINSON, Richard Anthony — director · British · appointed 2000-01-12 · resigned 2007-04-30

### Beneficial owners (Persons with Significant Control)

- [Tusk Corporation Limited](https://whiteintel.dev/entity/a743106d-38e0-4415-86e7-b183243d5d79) — 25–50% shares · corporate PSC · England — since 2016-04-06
- Siemens Aktiengesellschaft — 25–50% shares · corporate PSC · Germany — since 2016-04-06

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/00609503
- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/00609503

## 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 **PLESSEY HOLDINGS LIMITED** — https://whiteintel.dev/entity/ceafe74b-9da3-5185-8cf9-e67e43108726 · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **PLESSEY HOLDINGS LIMITED**. Human view: https://whiteintel.dev/entity/ceafe74b-9da3-5185-8cf9-e67e43108726 · Structured JSON: https://whiteintel.dev/api/public/dossier/ceafe74b-9da3-5185-8cf9-e67e43108726._

_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"._