---
title: "The Welding Institute — Ownership Dossier"
canonical: https://whiteintel.dev/entity/f814ab41-d141-43e5-bd2c-1eda6d2dbd4b
json: https://whiteintel.dev/api/public/dossier/f814ab41-d141-43e5-bd2c-1eda6d2dbd4b
identifier: gb-coh:405555
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# The Welding Institute

**Type:** Company  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `gb-coh:405555`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/f814ab41-d141-43e5-bd2c-1eda6d2dbd4b  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/f814ab41-d141-43e5-bd2c-1eda6d2dbd4b  

## Ownership & control

### Holdings / subsidiaries

- **THE TEST HOUSE (CAMBRIDGE) LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/5925fae4-1b72-4d1a-8e7d-6ed83b812a1b
- **TWI TECHNOLOGY CENTRE (YORKSHIRE) LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/82e95bab-c369-5f99-993a-915f365f2d3a
- **SIRF LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/146bbe36-b32c-507e-bd0d-8dc20d704b70
- **GRANTA PARK ESTATES LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/c8206271-9737-52e5-a11e-4c11ed2f6ade
- **NSIRC LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/37d144b8-ef9f-53e6-b8bb-d72069cea738
- **TWI LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/1574207e-1139-51a7-b318-3f3c73fdc429
- **PLANT INTEGRITY LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/5a9f28ad-fc4c-5507-96c5-6ad46308e557
- **TWI CERTIFICATION LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/d10d292a-91a6-576d-8a20-a3b934d20ac2

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **The Welding Institute**. Human view: https://whiteintel.dev/entity/f814ab41-d141-43e5-bd2c-1eda6d2dbd4b · Structured JSON: https://whiteintel.dev/api/public/dossier/f814ab41-d141-43e5-bd2c-1eda6d2dbd4b._

_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"._