---
title: "MAINSFORTH SUBSEA LTD — Ownership Dossier"
canonical: https://whiteintel.dev/entity/f23167fd-c5ff-55bf-951c-c2d9fa291ba8
json: https://whiteintel.dev/api/public/dossier/f23167fd-c5ff-55bf-951c-c2d9fa291ba8
identifier: oo:GB-COH-13145879
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# MAINSFORTH SUBSEA LTD

**Type:** Company  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `oo:GB-COH-13145879`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/f23167fd-c5ff-55bf-951c-c2d9fa291ba8  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/f23167fd-c5ff-55bf-951c-c2d9fa291ba8  

## Ownership & control

### Owners / controllers

- **Mrs Sarah Louise Parkin** (beneficial owner) — 50% — https://whiteintel.dev/entity/459ef505-3383-5444-b25b-c9eb2575f39c
- **Andrew Parkin** (beneficial owner) — 100% — https://whiteintel.dev/entity/c675cd9b-9f27-5b05-ba76-bbbb63f42fbd
- **Andrew Parkin** (beneficial owner) — 62.5% — https://whiteintel.dev/entity/cb153ba6-d416-4fa9-ac88-8b16a19ef147
- **Mrs Sarah Louise Parkin** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/f7935456-8007-49af-b686-5481a3dabcda

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

A **4-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:** `13145879`
- **Status:** active
- **Type:** ltd
- **Incorporated:** 2021-01-20
- **Registered office:** Kensington House, 3 Kensington, Bishop Auckland, County Durham, DL14 6HX, England
- **SIC:** 71129

### Officers

- PARKIN, Andrew — director · British · appointed 2021-01-20
- PARKIN, Sarah Louise — director · British · appointed 2023-05-18

### Beneficial owners (Persons with Significant Control)

- Mrs Sarah Louise Parkin — 25–50% shares · individual PSC · England — since 2023-08-31
- Andrew Parkin — 50–75% shares · individual PSC · England — since 2021-01-20

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/13145879
- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/13145879

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **MAINSFORTH SUBSEA LTD**. Human view: https://whiteintel.dev/entity/f23167fd-c5ff-55bf-951c-c2d9fa291ba8 · Structured JSON: https://whiteintel.dev/api/public/dossier/f23167fd-c5ff-55bf-951c-c2d9fa291ba8._

_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"._