---
title: "ISTESSO LIMITED — Ownership Dossier"
canonical: https://whiteintel.dev/entity/8ecb3cc2-ee80-5e72-bd99-e89a4db71dd3
json: https://whiteintel.dev/api/public/dossier/8ecb3cc2-ee80-5e72-bd99-e89a4db71dd3
identifier: oo:GB-COH-10756496
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# ISTESSO LIMITED

**Type:** Company  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `oo:GB-COH-10756496`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/8ecb3cc2-ee80-5e72-bd99-e89a4db71dd3  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/8ecb3cc2-ee80-5e72-bd99-e89a4db71dd3  

## Ownership & control

### Owners / controllers

- **Samuel Cameron Williams** (beneficial owner) — 100% — https://whiteintel.dev/entity/f9e40a04-ffe6-5246-9639-51c9ba3861f1
- **IP GROUP PLC** (beneficial owner) — 50% — https://whiteintel.dev/entity/9f7e1fa3-4b3f-5c54-b1fc-8b8ec60190c7
- **Samuel Cameron Williams** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/b4cfd05e-0d27-4cd0-8e79-abb7ab0394a3
- **IP2IPO LIMITED** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/83baa153-99ab-5726-97b6-5e13f3e703f4
- **IP GROUP PLC** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/9f7e1fa3-4b3f-5c54-b1fc-8b8ec60190c7

### Holdings / subsidiaries

- **ISTESSO 3 LIMITED** (beneficial owner) — 100% — https://whiteintel.dev/entity/ff2cbc26-1943-575f-a36f-1681eea94fd4
- **MBS5 LIMITED** (beneficial owner) — 100% — https://whiteintel.dev/entity/3006100b-a34f-5e9f-9eab-600aa7a2b18d
- **ISTESSO 2 LIMITED** (beneficial owner) — 100% — https://whiteintel.dev/entity/ec90d6f2-a996-532b-af06-968e3b473237
- **ISTESSO THERAPEUTICS LIMITED** (beneficial owner) — 100% — https://whiteintel.dev/entity/4205934f-dd0a-5fcc-86dd-26ec8e49e31c
- **MBS5 LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/3006100b-a34f-5e9f-9eab-600aa7a2b18d
- **ISTESSO 3 LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/ff2cbc26-1943-575f-a36f-1681eea94fd4
- **ISTESSO 2 LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/ec90d6f2-a996-532b-af06-968e3b473237
- **ISTESSO THERAPEUTICS LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/4205934f-dd0a-5fcc-86dd-26ec8e49e31c

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

A **9-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:** `10756496`
- **Status:** active
- **Type:** ltd
- **Incorporated:** 2017-05-05
- **Registered office:** 2nd Floor 3 Pancras Square, Kings Cross, London, N1C 4AG, United Kingdom
- **SIC:** 72190

### Officers

- [PINSENT MASONS SECRETARIAL LIMITED](https://whiteintel.dev/entity/4cd3ee32-bc25-581b-95e6-0c580796349e) — corporate secretary · appointed 2017-09-12
- ALLEN, Peter Vance — director · British · appointed 2017-09-01
- OWEN, Michael, Dr — director · British · appointed 2025-06-01
- PATEL, Lisa, Dr — director · British · appointed 2017-05-05
- PETERS, David Keith, Professor Sir — director · British · appointed 2017-09-01
- WILLIAMS, Samuel Cameron, Dr — director · British · appointed 2017-05-05
- [IP2IPO SERVICES LIMITED](https://whiteintel.dev/entity/b21b9a75-76e8-5cdc-9da2-2bf770496dd4) — corporate director · appointed 2025-07-02
- IP2IPO SERVICES LIMITED — corporate secretary · appointed 2017-05-05 · resigned 2017-09-12
- IP2IPO SERVICES LIMITED — corporate director · appointed 2017-05-05 · resigned 2017-12-22

### Beneficial owners (Persons with Significant Control)

- [Ip2ipo Limited](https://whiteintel.dev/entity/83baa153-99ab-5726-97b6-5e13f3e703f4) — 25–50% shares · corporate PSC · United Kingdom — since 2018-09-18
- [Ip Group Plc](https://whiteintel.dev/entity/9f7e1fa3-4b3f-5c54-b1fc-8b8ec60190c7) — 25–50% shares · corporate PSC · United Kingdom — ceased 2018-09-18
- Samuel Cameron Williams — 75–100% shares · individual PSC · United Kingdom — ceased 2017-06-30

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/10756496
- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/10756496

## 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 **ISTESSO LIMITED** — https://whiteintel.dev/entity/8ecb3cc2-ee80-5e72-bd99-e89a4db71dd3 · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **ISTESSO LIMITED**. Human view: https://whiteintel.dev/entity/8ecb3cc2-ee80-5e72-bd99-e89a4db71dd3 · Structured JSON: https://whiteintel.dev/api/public/dossier/8ecb3cc2-ee80-5e72-bd99-e89a4db71dd3._

_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"._