---
title: "JOHN CHARLES MAYO — Ownership Dossier"
canonical: https://whiteintel.dev/entity/d84a796b-787a-5ec7-a14f-15efbd965080
json: https://whiteintel.dev/api/public/dossier/d84a796b-787a-5ec7-a14f-15efbd965080
identifier: icij:icijol-56011519
jurisdiction: GB
risk: Medium
source: WhiteIntel corporate-ownership graph
---

# JOHN CHARLES MAYO

**Type:** Organization  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `icij:icijol-56011519`  
**Risk level:** Medium  
**Canonical dossier:** https://whiteintel.dev/entity/d84a796b-787a-5ec7-a14f-15efbd965080  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/d84a796b-787a-5ec7-a14f-15efbd965080  

## Cross-source identity

The same real-world entity, resolved across sources:

- **John Charles Mayo** — OpenOwnership · `oo-person:GB-COH-PER-10782195-9N3NmZlpi73H4_mbMs5Ty9lop7g` — https://whiteintel.dev/entity/a313a50b-7071-57f4-b1f0-d4eac3a71cf6
- **John Charles Mayo** — source · `psc:9N3NmZlpi73H4_mbMs5Ty9lop7g` — https://whiteintel.dev/entity/040a7eff-cd97-4167-ad18-8adff7fff56a
- **JOHN CHARLES MAYO** — ICIJ Offshore Leaks · `icij:icijol-56047734` — https://whiteintel.dev/entity/4f60dfbe-143e-5f96-b00d-bdb034f14a41

## Ownership & control

### Holdings / subsidiaries

- **NEW PHARMA LICENCE HOLDINGS LIMITED** (director of) — https://whiteintel.dev/entity/a9ee3360-0642-5b8b-a3dd-7d380c77f609
- **NEW PHARMA LICENCE HOLDINGS LIMITED** (legal representative of) — https://whiteintel.dev/entity/a9ee3360-0642-5b8b-a3dd-7d380c77f609
- **SEQUESSOME TECHNOLOGY HOLDINGS LIMITED** (director of) — https://whiteintel.dev/entity/ab003b34-cc0b-531b-a8f5-000e300ef29d
- **SEQUESSOME TECHNOLOGY HOLDINGS LIMITED** (legal representative of) — https://whiteintel.dev/entity/ab003b34-cc0b-531b-a8f5-000e300ef29d
- **PRO BONO BIO INTERNATIONAL TRADING LIMITED** (director of) — https://whiteintel.dev/entity/1700e57f-5952-5d5f-8294-6c1fb05a10e1
- **PRO BONO BIO INTERNATIONAL TRADING LIMITED** (legal representative of) — https://whiteintel.dev/entity/1700e57f-5952-5d5f-8294-6c1fb05a10e1
- **CANTAB BIOPHARMACEUTICALS PATENTS LIMITED** (director of) — https://whiteintel.dev/entity/f64b2010-1bf4-5425-adc8-ec469a914c7c
- **CANTAB BIOPHARMACEUTICALS PATENTS LIMITED** (legal representative of) — https://whiteintel.dev/entity/f64b2010-1bf4-5425-adc8-ec469a914c7c

## Provenance

- ICIJ Offshore Leaks — https://offshoreleaks.icij.org/nodes/56011519

## 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 **JOHN CHARLES MAYO** — https://whiteintel.dev/entity/d84a796b-787a-5ec7-a14f-15efbd965080 · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **JOHN CHARLES MAYO**. Human view: https://whiteintel.dev/entity/d84a796b-787a-5ec7-a14f-15efbd965080 · Structured JSON: https://whiteintel.dev/api/public/dossier/d84a796b-787a-5ec7-a14f-15efbd965080._

_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"._