---
title: "TRANSOCEAN ONSHORE SUPPORT SERVICES LIMITED — Ownership Dossier"
canonical: https://whiteintel.dev/entity/2d56d0f9-5cd0-53be-bc3b-36ce10b941fe
json: https://whiteintel.dev/api/public/dossier/2d56d0f9-5cd0-53be-bc3b-36ce10b941fe
identifier: oo:GB-COH-SC217020
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# TRANSOCEAN ONSHORE SUPPORT SERVICES LIMITED

**Type:** Company  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `oo:GB-COH-SC217020`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/2d56d0f9-5cd0-53be-bc3b-36ce10b941fe  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/2d56d0f9-5cd0-53be-bc3b-36ce10b941fe  

## Ownership & control

### Owners / controllers

- **TRANSOCEAN DRILLING U.K. LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/7fe26be3-b310-5767-a486-2c612785b7e8

### 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:** `SC217020`
- **Status:** active
- **Type:** ltd
- **Incorporated:** 2001-03-20
- **Registered office:** 9th Floor Aurora Building, 120 Bothwell Street, Glasgow, G2 7JS, United Kingdom
- **SIC:** 09100

### Officers

- GUNN, Craig Ritchie, Mr. — director · British · appointed 2026-06-30
- HAY, Alexis Anne — director · British · appointed 2015-05-18
- THOMA, Sandro, Mr. — director · Swiss · appointed 2026-04-22
- [BURNESS PAULL LLP](https://whiteintel.dev/entity/1b53ac9b-6f11-56ff-916a-c22dde9e6d87) — corporate secretary · appointed 2013-05-24 · resigned 2019-05-29
- P & W SECRETARIES LIMITED — corporate nominee secretary · appointed 2001-03-20 · resigned 2001-06-01
- PAULL & WILLIAMSONS — corporate secretary · appointed 2001-06-01 · resigned 2009-04-06
- PAULL & WILLIAMSONS LLP — corporate secretary · appointed 2009-04-06 · resigned 2013-05-24
- BAKER, Walter Andrew — director · Us Citizen · appointed 2005-11-16 · resigned 2008-07-01
- BAKER, Walter Andrew — director · Us Citizen · appointed 2001-06-01 · resigned 2003-04-14
- CAMERON, Barry Nicholas — director · British · appointed 2008-07-01 · resigned 2012-02-08
- CLYNE, Neil Kenneth — director · British · appointed 2012-02-08 · resigned 2016-04-29
- JONES, Roger Shelley — director · British · appointed 2008-07-01 · resigned 2010-04-26
- KING, Paul Arthur — director · British · appointed 2008-07-01 · resigned 2011-10-01
- LESLIE, Andrew — director · British · appointed 2018-05-18 · resigned 2024-04-18
- MATEJ, George Vincent — director · American · appointed 2001-06-01 · resigned 2004-11-26
- MEEK, Hazel Francene Stuart — director · British · appointed 2017-04-25 · resigned 2025-04-01
- MELDRUM, Colin Campbell Mitchell — director · British · appointed 2018-09-13 · resigned 2025-01-09
- NESS, Christopher Leonard — director · British · appointed 2003-09-15 · resigned 2008-07-01
- NUTTALL, Martin — director · British · appointed 2003-04-14 · resigned 2008-07-01
- ROSE, Adrian Paul — director · British · appointed 2011-10-01 · resigned 2015-04-17

### Beneficial owners (Persons with Significant Control)

- [Transocean Drilling U.K. Limited](https://whiteintel.dev/entity/7fe26be3-b310-5767-a486-2c612785b7e8) — 75–100% shares · corporate PSC · Scotland — since 2016-04-06

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/SC217020
- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/SC217020

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **TRANSOCEAN ONSHORE SUPPORT SERVICES LIMITED**. Human view: https://whiteintel.dev/entity/2d56d0f9-5cd0-53be-bc3b-36ce10b941fe · Structured JSON: https://whiteintel.dev/api/public/dossier/2d56d0f9-5cd0-53be-bc3b-36ce10b941fe._

_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"._