---
title: "TSG ASSURANCE HOLDINGS LIMITED — Ownership Dossier"
canonical: https://whiteintel.dev/entity/51452068-5cb1-53c9-9d3f-40bd2a71fcec
json: https://whiteintel.dev/api/public/dossier/51452068-5cb1-53c9-9d3f-40bd2a71fcec
identifier: oo:GB-COH-09989416
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# TSG ASSURANCE HOLDINGS LIMITED

**Type:** Company  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `oo:GB-COH-09989416`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/51452068-5cb1-53c9-9d3f-40bd2a71fcec  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/51452068-5cb1-53c9-9d3f-40bd2a71fcec  

## Ownership & control

### Owners / controllers

- **Mr Mark Watson** (beneficial owner) — 50% — https://whiteintel.dev/entity/fae2567a-f2c1-5e9a-a7e9-5f04a83587c3
- **Mr Mark Watson** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/d3d2f12c-9b3f-49e2-baf1-468eb1a31acc

### Holdings / subsidiaries

- **TESTING SOLUTIONS GROUP LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/5259de2d-f662-5d2c-a63e-2d7ffee7cc84

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

A **2-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:** `09989416`
- **Status:** liquidation
- **Type:** ltd
- **Incorporated:** 2016-02-05
- **Registered office:** C/O Btg Begbies Traynor (London) Llp Level 33, One Canada Square, London, E14 5AB
- **SIC:** 62020

### Officers

- ROBSON, Matthew — director · British · appointed 2016-02-05
- WATSON, Mark — director · British · appointed 2016-02-05
- DANIEL, Jordan Graeme — director · British · appointed 2016-02-05 · resigned 2016-05-20
- MELSON, Bernard James Kenneth — director · British · appointed 2016-06-02 · resigned 2017-11-07
- WALKER, David Jonathan Haddon — director · British · appointed 2016-07-01 · resigned 2023-12-18

### Beneficial owners (Persons with Significant Control)

- Mr Mark Watson — 25–50% shares · individual PSC — since 2016-04-06

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/09989416
- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/09989416

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **TSG ASSURANCE HOLDINGS LIMITED**. Human view: https://whiteintel.dev/entity/51452068-5cb1-53c9-9d3f-40bd2a71fcec · Structured JSON: https://whiteintel.dev/api/public/dossier/51452068-5cb1-53c9-9d3f-40bd2a71fcec._

_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"._