---
title: "M & A MEDICAL SERVICES LIMITED — Ownership Dossier"
canonical: https://whiteintel.dev/entity/fa4aff48-1d2d-5ae1-9d7a-5df85e7aaad4
json: https://whiteintel.dev/api/public/dossier/fa4aff48-1d2d-5ae1-9d7a-5df85e7aaad4
identifier: oo:GB-COH-07237230
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# M & A MEDICAL SERVICES LIMITED

**Type:** Company  
**Jurisdiction:** GB  
**Identifier:** `oo:GB-COH-07237230`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/fa4aff48-1d2d-5ae1-9d7a-5df85e7aaad4  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/fa4aff48-1d2d-5ae1-9d7a-5df85e7aaad4  

## Ownership & control

### Owners / controllers

- **Mrs Anastasia Yiallouros** (beneficial owner) — 50% — https://whiteintel.dev/entity/3b4e5841-cda3-563c-ad52-7f77767be375
- **Dr Michael Yiallouros** (beneficial owner) — 50% — https://whiteintel.dev/entity/a0ee836b-bcae-5a63-bd09-9e98610220db
- **Mrs Anastasia Yiallouros** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/eff6b7e0-2528-4aa9-9ecb-c306074fbacf
- **Dr Michael Yiallouros** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/8def680a-6340-4f19-90ef-b5938b551cbe

### 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:** `07237230`
- **Status:** active
- **Type:** ltd
- **Incorporated:** 2010-04-28
- **Registered office:** Lynton House, 7-12 Tavistock Square, London, WC1H 9BQ
- **SIC:** 86210

### Officers

- YIALLOUROS, Anastasia — director · British · appointed 2016-04-29
- YIALLOUROS, Michael, Dr — director · British · appointed 2010-04-28
- COWAN, Graham Michael — director · British · appointed 2010-04-28 · resigned 2010-04-28

### Beneficial owners (Persons with Significant Control)

- Mrs Anastasia Yiallouros — 25–50% shares · individual PSC — since 2016-04-06
- Dr Michael Yiallouros — 25–50% shares · individual PSC — since 2016-04-06

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/07237230
- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/07237230

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **M & A MEDICAL SERVICES LIMITED**. Human view: https://whiteintel.dev/entity/fa4aff48-1d2d-5ae1-9d7a-5df85e7aaad4 · Structured JSON: https://whiteintel.dev/api/public/dossier/fa4aff48-1d2d-5ae1-9d7a-5df85e7aaad4._

_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"._