---
title: "CMC BIOPHARMA LTD — Ownership Dossier"
canonical: https://whiteintel.dev/entity/f38476ca-e471-52b2-9860-66e4def858ac
json: https://whiteintel.dev/api/public/dossier/f38476ca-e471-52b2-9860-66e4def858ac
identifier: oo:GB-COH-13376283
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# CMC BIOPHARMA LTD

**Type:** Company  
**Jurisdiction:** GB  
**Identifier:** `oo:GB-COH-13376283`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/f38476ca-e471-52b2-9860-66e4def858ac  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/f38476ca-e471-52b2-9860-66e4def858ac  

## Ownership & control

### Owners / controllers

- **Dr Leonard Keith Pattenden** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/c9724e45-8791-40b6-8014-c5c00aabc540

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

1. **Dr Leonard Keith Pattenden** — beneficial owner 87.5% → *CMC BIOPHARMA LTD*

## Company profile (live · UK Companies House)

- **Company number:** `13376283`
- **Status:** active
- **Type:** ltd
- **Incorporated:** 2021-05-05
- **Registered office:** 5 Technology Park, Colindeep Lane, Colindale, London, NW9 6BX, United Kingdom
- **SIC:** 21100, 58190, 71122, 72110

### Officers

- PATTENDEN, Leonard Keith, Dr — director · British,Australian · appointed 2021-05-05

### Beneficial owners (Persons with Significant Control)

- Dr Leonard Keith Pattenden — 75–100% shares · individual PSC · United Kingdom — since 2021-05-05

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/13376283
- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/13376283

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **CMC BIOPHARMA LTD**. Human view: https://whiteintel.dev/entity/f38476ca-e471-52b2-9860-66e4def858ac · Structured JSON: https://whiteintel.dev/api/public/dossier/f38476ca-e471-52b2-9860-66e4def858ac._

_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"._