---
title: "PROTOS HOLDING LIMITED — Ownership Dossier"
canonical: https://whiteintel.dev/entity/cd622ac8-6b04-5fdb-9e10-ab97e8c798c2
json: https://whiteintel.dev/api/public/dossier/cd622ac8-6b04-5fdb-9e10-ab97e8c798c2
identifier: oo:GB-COH-11920987
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# PROTOS HOLDING LIMITED

**Type:** Company  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `oo:GB-COH-11920987`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/cd622ac8-6b04-5fdb-9e10-ab97e8c798c2  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/cd622ac8-6b04-5fdb-9e10-ab97e8c798c2  

## Cross-source identity

The same real-world entity, resolved across sources:

- **PROTOS HOLDING LIMITED** — GLEIF · `lei:213800MB6H5DXXFR2X59` — https://whiteintel.dev/entity/996c7ead-137c-583e-bbcf-7ee1494287f7

## Ownership & control

### Owners / controllers

- **ENCYCLIS PROTOS HOLDCO LIMITED** (beneficial owner) — 100% — https://whiteintel.dev/entity/3dcfd831-b29d-548a-b330-a4e8efdcbbb8
- **ENCYCLIS PROTOS HOLDCO LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/3dcfd831-b29d-548a-b330-a4e8efdcbbb8

### Holdings / subsidiaries

- **PROTOS ERF LIMITED** (beneficial owner) — 100% — https://whiteintel.dev/entity/05c05e4c-1d8c-5545-9913-a2ebbe55c6c0
- **PROTOS ERF LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/05c05e4c-1d8c-5545-9913-a2ebbe55c6c0

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

A **41-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:** `11920987`
- **Status:** active
- **Type:** ltd
- **Incorporated:** 2019-04-02
- **Registered office:** Floor 4, Lynton House, 7-12 Tavistock Square, London, WC1H 9LT, England
- **SIC:** 35110

### Officers

- SIALVI, Hassan Mustafa — secretary · appointed 2024-07-22
- GREGORY, Maria — director · British · appointed 2024-07-22
- MCSHANE, Anthony Thomas — director · British · appointed 2021-01-27
- SHAFQAT, Ahad — director · British · appointed 2023-07-23
- GREGORY, Maria — secretary · appointed 2023-07-23 · resigned 2024-07-22
- OYEGOKE, Toye — secretary · appointed 2021-06-01 · resigned 2023-07-23
- [VISTRA COSEC LIMITED](https://whiteintel.dev/entity/c0d53d7b-482f-52f7-af62-7e36b80f875b) — corporate secretary · appointed 2019-04-02 · resigned 2021-06-01
- COOK, Iain — director · British · appointed 2023-10-14 · resigned 2024-07-22
- EDGAR, Matthew John — director · Australian · appointed 2020-11-23 · resigned 2022-06-08
- HOOD, Mary, Dr — director · British · appointed 2020-11-24 · resigned 2022-06-07
- HOWIE, Andrew Tristan — director · British · appointed 2022-06-21 · resigned 2023-10-14
- KOLTIS, Tommy John — director · American · appointed 2019-04-02 · resigned 2023-10-14
- MCCAFFERY, Martin — director · British · appointed 2021-01-27 · resigned 2022-06-08
- MILAN, Liam Oliver — director · British · appointed 2024-08-08 · resigned 2025-07-22
- MULCAHY, Matthew Robert — director · American · appointed 2019-04-02 · resigned 2022-06-21
- ROBERTS, Oliver — director · British · appointed 2022-06-13 · resigned 2024-08-08
- THAIR, Michael — director · British · appointed 2020-11-24 · resigned 2025-07-22
- WILSON, Stuart Andrew — director · Australian · appointed 2020-11-23 · resigned 2022-03-30

### Beneficial owners (Persons with Significant Control)

- [Encyclis Protos Holdco Limited](https://whiteintel.dev/entity/3dcfd831-b29d-548a-b330-a4e8efdcbbb8) — 75–100% shares · corporate PSC · England — since 2019-04-02

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/11920987
- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/11920987

## 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 **PROTOS HOLDING LIMITED** — https://whiteintel.dev/entity/cd622ac8-6b04-5fdb-9e10-ab97e8c798c2 · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **PROTOS HOLDING LIMITED**. Human view: https://whiteintel.dev/entity/cd622ac8-6b04-5fdb-9e10-ab97e8c798c2 · Structured JSON: https://whiteintel.dev/api/public/dossier/cd622ac8-6b04-5fdb-9e10-ab97e8c798c2._

_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"._