---
title: "PHEROSYN LTD — Ownership Dossier"
canonical: https://whiteintel.dev/entity/11ef871d-2da3-52cd-95d5-9448f6943a33
json: https://whiteintel.dev/api/public/dossier/11ef871d-2da3-52cd-95d5-9448f6943a33
identifier: oo:GB-COH-12434594
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# PHEROSYN LTD

**Type:** Company  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `oo:GB-COH-12434594`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/11ef871d-2da3-52cd-95d5-9448f6943a33  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/11ef871d-2da3-52cd-95d5-9448f6943a33  

## Ownership & control

### Owners / controllers

- **Dr Mary Louise Ellis** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/2ea78385-a60f-4331-b94b-acbd1142e80c
- **Mr Daniel Ryan Bahia** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/181c706f-ebf9-4893-8e35-d6b2e2b785e9
- **Dr Mary Louise Ellis** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/31d05e37-c411-44b7-89be-f4509971f825

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

A **3-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:** `12434594`
- **Status:** active
- **Type:** ltd
- **Incorporated:** 2020-01-30
- **Registered office:** Rothamsted Research, West Common, Harpenden, Hertfordshire, AL5 2JQ, United Kingdom
- **SIC:** 20200

### Officers

- BAHIA, Daniel Ryan — director · British · appointed 2020-01-30
- BIRKETT, Michael Alexander, Dr — director · British · appointed 2020-01-30
- ELLIS, Mary Louise, Dr — director · British,Canadian · appointed 2023-05-16
- LAWRENCE, David Kenneth, Dr — director · British · appointed 2024-01-23
- LAWTON, Tina Elizabeth — director · British · appointed 2024-05-01
- CAULFIELD, John Christopher, Dr — director · British · appointed 2020-01-30 · resigned 2024-01-23
- FORTE, Bianca — director · Italian,Brazilian · appointed 2022-03-24 · resigned 2025-02-26
- WITHALL, David Matthew, Dr — director · British · appointed 2020-01-30 · resigned 2024-01-23

### Beneficial owners (Persons with Significant Control)

- Dr Mary Louise Ellis — 25–50% shares · individual PSC · United Kingdom — since 2025-12-17
- Mr Daniel Ryan Bahia — 25–50% shares · individual PSC · United Kingdom — since 2025-12-17
- Dr Mary Louise Ellis — 25–50% shares · individual PSC · United Kingdom — ceased 2024-06-07

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/12434594
- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/12434594

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **PHEROSYN LTD**. Human view: https://whiteintel.dev/entity/11ef871d-2da3-52cd-95d5-9448f6943a33 · Structured JSON: https://whiteintel.dev/api/public/dossier/11ef871d-2da3-52cd-95d5-9448f6943a33._

_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"._