---
title: "SENTINEL PHOTONICS LIMITED — Ownership Dossier"
canonical: https://whiteintel.dev/entity/c211a70b-2e06-5fbd-9044-30a01433dffc
json: https://whiteintel.dev/api/public/dossier/c211a70b-2e06-5fbd-9044-30a01433dffc
identifier: oo:GB-COH-12163852
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# SENTINEL PHOTONICS LIMITED

**Type:** Company  
**Jurisdiction:** GB  
**Identifier:** `oo:GB-COH-12163852`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/c211a70b-2e06-5fbd-9044-30a01433dffc  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/c211a70b-2e06-5fbd-9044-30a01433dffc  

## Ownership & control

### Owners / controllers

- **Sean Michael Tsi-Ong Tipper** (beneficial owner) — 50% — https://whiteintel.dev/entity/0a22532b-52f1-56d6-bc15-5f4cf503e80a
- **Dr Christopher David Burgess** (beneficial owner) — 50% — https://whiteintel.dev/entity/994042f4-ec0c-584c-8d9c-2eda39f9e75b
- **Dr Christopher David Burgess** (beneficial owner) — https://whiteintel.dev/entity/0699e12e-e5ec-4d40-8f49-713dd44a7ccc
- **Sean Michael Tsi-Ong Tipper** (beneficial owner) — https://whiteintel.dev/entity/46b44569-bb57-41e7-86ef-256dcdc8dbeb
- **PLOUGHSHARE INNOVATIONS LTD** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/a23a4daf-b5f3-5cb4-b727-573321440e37
- **PLOUGHSHARE INNOVATIONS LTD** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/a23a4daf-b5f3-5cb4-b727-573321440e37

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

A **8-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:** `12163852`
- **Status:** active
- **Type:** ltd
- **Incorporated:** 2019-08-19
- **Registered office:** Porton Science Park, Bybrook Road, Porton Down, Wiltshire, SP4 0BF, United Kingdom
- **SIC:** 32990, 72190

### Officers

- BARKWORTH-NANTON, Henrietta Rosamund Clare — director · British · appointed 2021-02-15
- BLANSHAY, Jonathan — director · Canadian · appointed 2026-04-28
- BURGESS, Christopher David, Dr — director · British · appointed 2021-05-05
- TIPPER, Sean Michael Tsi-Ong — director · British · appointed 2021-12-13
- CALLISTER, Stephen John Paul — director · British · appointed 2019-08-19 · resigned 2021-02-11
- KIRBY, James Michael — director · British · appointed 2019-08-19 · resigned 2020-05-21
- SCOTT, Gordon Paul — director · British · appointed 2021-07-21 · resigned 2026-04-28
- WILLIAMSON, Robin James — director · British · appointed 2020-09-24 · resigned 2021-09-23

### Beneficial owners (Persons with Significant Control)

- Sean Michael Tsi-Ong Tipper — 25–50% votes · individual PSC · United Kingdom — since 2021-12-13
- Dr Christopher David Burgess — 25–50% votes · individual PSC · United Kingdom — since 2021-12-13
- [Ploughshare Innovations Ltd](https://whiteintel.dev/entity/a23a4daf-b5f3-5cb4-b727-573321440e37) — 25–50% shares · corporate PSC · England — ceased 2026-04-28
- [Ploughshare Innovations Ltd](https://whiteintel.dev/entity/a23a4daf-b5f3-5cb4-b727-573321440e37) — 75–100% shares · corporate PSC · United Kingdom — ceased 2021-12-13

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/12163852
- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/12163852

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **SENTINEL PHOTONICS LIMITED**. Human view: https://whiteintel.dev/entity/c211a70b-2e06-5fbd-9044-30a01433dffc · Structured JSON: https://whiteintel.dev/api/public/dossier/c211a70b-2e06-5fbd-9044-30a01433dffc._

_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"._