---
title: "WASTEWATER MANAGEMENT HOLDINGS LIMITED — Ownership Dossier"
canonical: https://whiteintel.dev/entity/6483c8cf-17f6-5f22-a3cd-1f1316f715b4
json: https://whiteintel.dev/api/public/dossier/6483c8cf-17f6-5f22-a3cd-1f1316f715b4
identifier: oo:GB-COH-SC201429
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# WASTEWATER MANAGEMENT HOLDINGS LIMITED

**Type:** Company  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `oo:GB-COH-SC201429`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/6483c8cf-17f6-5f22-a3cd-1f1316f715b4  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/6483c8cf-17f6-5f22-a3cd-1f1316f715b4  

## Ownership & control

### Owners / controllers

- **NORTHUMBRIAN SERVICES LIMITED** (beneficial owner) — 75% — https://whiteintel.dev/entity/0f88a3f5-c888-5dcc-b8d8-525ddc4001cf
- **SEMPERIAN PPP HOLDINGS LIMITED** (beneficial owner) — 50% — https://whiteintel.dev/entity/80046cf8-f79f-5222-8793-26d617775033
- **SEMPERIAN PPP HOLDINGS LIMITED** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/80046cf8-f79f-5222-8793-26d617775033
- **NORTHUMBRIAN SERVICES LIMITED** (beneficial owner) — 62.5% — https://whiteintel.dev/entity/0f88a3f5-c888-5dcc-b8d8-525ddc4001cf

### Holdings / subsidiaries

- **AYR ENVIRONMENTAL SERVICES LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/4eaf5e10-4b24-5fdd-bb4e-ded066da2365

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

A **15-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:** `SC201429`
- **Status:** active
- **Type:** ltd
- **Incorporated:** 1999-11-09
- **Registered office:** Meadowhead Wastement Treatment, Works & Sludge Treatment Centre, Meadowhead Road, Irvine, Ayrshire, KA11 5AY
- **SIC:** 70100

### Officers

- SOMERVILLE, Richard William Peter — secretary · appointed 2021-10-08
- HAZON, Stewart — director · British · appointed 2012-09-30
- RITCHIE, Alan Campbell — director · British · appointed 2009-12-05
- SOMERVILLE, Richard William Peter — director · British · appointed 2025-07-30
- BEVERIDGE, Maria — secretary · British · appointed 1999-11-24 · resigned 2017-07-31
- PARKER, Martin — secretary · appointed 2017-07-31 · resigned 2021-10-08
- OSWALDS OF EDINBURGH LIMITED — corporate nominee secretary · appointed 1999-11-09 · resigned 1999-11-24
- BAUDUIN, Walter Hughes Herman — director · Belgian · appointed 2004-07-01 · resigned 2005-02-28
- BAUDUIN, Walter Hughes Herman — director · Belgian · appointed 2001-06-08 · resigned 2002-03-21
- BAZIRE, Arnaud — director · French · appointed 2004-07-01 · resigned 2005-02-28
- BELL, Leslie Anthony — director · British · appointed 2000-10-11 · resigned 2001-07-27
- BIRCH, Alan Edward — director · British · appointed 2009-01-12 · resigned 2009-12-05
- BOULET, Pierre Yves — director · French · appointed 2005-02-28 · resigned 2005-12-23
- BRIENT, Benoit — director · British · appointed 2005-02-28 · resigned 2005-12-23
- BUCKLE, David — director · British · appointed 2003-03-31 · resigned 2004-07-01
- CEDARO, Guillermo — director · Argentine · appointed 2001-05-03 · resigned 2002-09-04
- CHALLENGER, Paul — director · British · appointed 2000-10-11 · resigned 2005-09-22
- CHAMBERLAIN, Janet Patricia — director · British · appointed 2007-04-30 · resigned 2009-01-12
- CRAKE, Steven Nicholas — director · British · appointed 2019-11-22 · resigned 2025-07-30
- DIXON, Thomas Nigel — director · British · appointed 2018-10-25 · resigned 2019-11-22

### Beneficial owners (Persons with Significant Control)

- [Northumbrian Services Limited](https://whiteintel.dev/entity/0f88a3f5-c888-5dcc-b8d8-525ddc4001cf) — 50–75% shares · corporate PSC · England — since 2016-04-06
- [Semperian Ppp Holdings Limited](https://whiteintel.dev/entity/80046cf8-f79f-5222-8793-26d617775033) — 25–50% shares · corporate PSC · United Kingdom — since 2016-04-06

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/SC201429
- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/SC201429

## Get the full, resolved dossier (agent-callable)

The above is the free teaser. The resolved **multi-hop UBO chain**, ownership **%**, full **financial history**, itemised **assets** and the hop-by-hop **exposure path** are the paid depth — callable as tools from your agent:

```bash
npx -y @whiteintel/mcp-server   # then: get_dossier · trace_ownership_path · check_offshore_exposure
```

Or unlock a one-off cited dossier for **WASTEWATER MANAGEMENT HOLDINGS LIMITED** — https://whiteintel.dev/entity/6483c8cf-17f6-5f22-a3cd-1f1316f715b4 · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **WASTEWATER MANAGEMENT HOLDINGS LIMITED**. Human view: https://whiteintel.dev/entity/6483c8cf-17f6-5f22-a3cd-1f1316f715b4 · Structured JSON: https://whiteintel.dev/api/public/dossier/6483c8cf-17f6-5f22-a3cd-1f1316f715b4._

_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"._