---
title: "MT. ISA UNDERWRITING LIMITED — Ownership Dossier"
canonical: https://whiteintel.dev/entity/f89e6f42-c584-577c-bf81-5ebeb68235af
json: https://whiteintel.dev/api/public/dossier/f89e6f42-c584-577c-bf81-5ebeb68235af
identifier: oo:GB-COH-03631947
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# MT. ISA UNDERWRITING LIMITED

**Type:** Company  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `oo:GB-COH-03631947`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/f89e6f42-c584-577c-bf81-5ebeb68235af  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/f89e6f42-c584-577c-bf81-5ebeb68235af  

## Ownership & control

### Owners / controllers

- **Alastair Charles Herbert Foster** (beneficial owner) — 100% — https://whiteintel.dev/entity/397edb31-ec9d-5f2b-8559-c779eb690a5c
- **Alastair Charles Herbert Foster** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/3aeeb1bb-f1dc-4362-9712-05a1dba68801

### 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:** `03631947`
- **Status:** active
- **Type:** ltd
- **Incorporated:** 1998-09-10
- **Registered office:** 5th Floor 40 Gracechurch Street, London, EC3V 0BT, England
- **SIC:** 65120, 65202

### Officers

- [HAMPDEN LEGAL PLC](https://whiteintel.dev/entity/bd4f8e53-caec-58f5-9a1a-6e2aae92369c) — corporate secretary · appointed 2003-07-24
- FOSTER, Alastair Charles Herbert — director · British · appointed 1998-09-10
- FOSTER, Sara Kathleen — director · British · appointed 1998-09-10
- [NOMINA PLC](https://whiteintel.dev/entity/dfa97ab8-d9d7-547b-a589-0c15015a1892) — corporate director · appointed 2003-10-20
- FOSTER, Sara Kathleen — secretary · British · appointed 1998-09-10 · resigned 2003-07-24

### Beneficial owners (Persons with Significant Control)

- Alastair Charles Herbert Foster — 75–100% shares · individual PSC · England — since 2016-04-06

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/03631947
- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/03631947

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **MT. ISA UNDERWRITING LIMITED**. Human view: https://whiteintel.dev/entity/f89e6f42-c584-577c-bf81-5ebeb68235af · Structured JSON: https://whiteintel.dev/api/public/dossier/f89e6f42-c584-577c-bf81-5ebeb68235af._

_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"._