---
title: "PDT DOSIMETRY SERVICES LIMITED — Ownership Dossier"
canonical: https://whiteintel.dev/entity/ac01e32c-54fc-593f-b127-80c8fe80be3f
json: https://whiteintel.dev/api/public/dossier/ac01e32c-54fc-593f-b127-80c8fe80be3f
identifier: oo:GB-COH-06841401
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# PDT DOSIMETRY SERVICES LIMITED

**Type:** Company  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `oo:GB-COH-06841401`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/ac01e32c-54fc-593f-b127-80c8fe80be3f  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/ac01e32c-54fc-593f-b127-80c8fe80be3f  

## Ownership & control

### Owners / controllers

- **Mrs Sally Anne Maw** (beneficial owner) — 50% — https://whiteintel.dev/entity/cdc543a6-d46c-5ad3-b63b-5b67fb5843ee
- **Mr Philip David Tapper** (beneficial owner) — 50% — https://whiteintel.dev/entity/402ff1d4-e64f-54b8-9064-07c68388fe36
- **Mr Philip David Tapper** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/1c2c5590-3bff-44b4-a15b-305112d37f1b
- **Mrs Sally Anne Maw** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/52d62d14-9e43-4807-a505-ca1369f8ce88

### 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:** `06841401`
- **Status:** active
- **Type:** ltd
- **Incorporated:** 2009-03-10
- **Registered office:** Business Design Centre Unit 114 A, 52 Upper Street, London, N1 0QH
- **SIC:** 86900

## Financials (Companies House accounts)

| Figure | 2025-12-31 |
|---|---:|
| Net assets | £285 |
| Shareholder funds | £285 |
| Current assets | £4,749 |
| Employees | 2 |

_Latest filed period. Full 2-year history unlocks with a paid dossier — https://whiteintel.dev/pricing. As filed at Companies House._

### Officers

- MAW, Sally Anne — director · British · appointed 2009-03-10
- TAPPER, Philip David — director · British · appointed 2009-03-10

### Beneficial owners (Persons with Significant Control)

- Mrs Sally Anne Maw — 25–50% shares · individual PSC — since 2016-04-06
- Mr Philip David Tapper — 25–50% shares · individual PSC — since 2016-04-06

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/06841401
- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/06841401
- companies_house_accounts — https://find-and-update.company-information.service.gov.uk/company/06841401/filing-history

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **PDT DOSIMETRY SERVICES LIMITED**. Human view: https://whiteintel.dev/entity/ac01e32c-54fc-593f-b127-80c8fe80be3f · Structured JSON: https://whiteintel.dev/api/public/dossier/ac01e32c-54fc-593f-b127-80c8fe80be3f._

_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"._