---
title: "KIRTON WATER TREATMENT SERVICES LIMITED — Ownership Dossier"
canonical: https://whiteintel.dev/entity/7d8c1e57-5a0e-5f1d-ae22-eaa2139e7cb8
json: https://whiteintel.dev/api/public/dossier/7d8c1e57-5a0e-5f1d-ae22-eaa2139e7cb8
identifier: oo:GB-COH-08612475
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# KIRTON WATER TREATMENT SERVICES LIMITED

**Type:** Company  
**Jurisdiction:** GB  
**Identifier:** `oo:GB-COH-08612475`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/7d8c1e57-5a0e-5f1d-ae22-eaa2139e7cb8  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/7d8c1e57-5a0e-5f1d-ae22-eaa2139e7cb8  

## Ownership & control

### Owners / controllers

- **Mr Stephen Benger** (beneficial owner) — 100% — https://whiteintel.dev/entity/324c983b-c217-52ff-973d-38e757110c30
- **RSK ENVIRONMENT LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/c2e05021-6125-5f5a-b2bb-06ffc00253fa
- **Mr Stephen Benger** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/e8965032-3ebe-4271-9241-e99f140355d7

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

1. **Mr Stephen Benger** — beneficial owner 100% → *KIRTON WATER TREATMENT SERVICES LIMITED*
1. **RSK ENVIRONMENT LIMITED** — beneficial owner 87.5% → *KIRTON WATER TREATMENT SERVICES LIMITED*
1. **Mr Stephen Benger** — beneficial owner 87.5% → *KIRTON WATER TREATMENT SERVICES LIMITED*
2. **RSK GROUP LIMITED** — beneficial owner 100% → *RSK ENVIRONMENT LIMITED*
2. **ARES MANAGEMENT LIMITED** — beneficial owner 100% → *RSK ENVIRONMENT LIMITED*
2. **ARES MANAGEMENT LIMITED** — beneficial owner 87.5% → *RSK ENVIRONMENT LIMITED*
2. **RSK GROUP LIMITED** — beneficial owner → *RSK ENVIRONMENT LIMITED*
2. **Ares Management Ltd** — beneficial owner → *RSK ENVIRONMENT LIMITED*
2. **Rsk Group L:Imited** — beneficial owner 87.5% → *RSK ENVIRONMENT LIMITED*
3. **Dr Mary Ann Elizabeth Smyth** — beneficial owner 50% → *RSK GROUP LIMITED*
3. **Dr Alasdair Alan Ryder** — beneficial owner 50% → *RSK GROUP LIMITED*
3. **Dr Mary Ann Elizabeth Smyth** — beneficial owner → *RSK GROUP LIMITED*
3. **Alan Ryder Investments Limited** — beneficial owner 37.5% → *RSK GROUP LIMITED*
3. **Alasdair Alan Ryder** — beneficial owner → *RSK GROUP LIMITED*
3. **Ares Management, L.P.** — beneficial owner 87.5% → *ARES MANAGEMENT LIMITED*

## Company profile (live · UK Companies House)

- **Company number:** `08612475`
- **Status:** active
- **Type:** ltd
- **Incorporated:** 2013-07-16
- **Registered office:** Spring Lodge, 172 Chester Road, Helsby, Cheshire, WA6 0AR, England
- **SIC:** 32990

### Officers

- EVANS, Sally Ann — secretary · appointed 2023-07-06
- BROOKS, James Morris — director · British · appointed 2018-08-31
- HERLIHY, Francis — director · British · appointed 2025-04-01
- ROWE, Thomas James Wharton — director · British · appointed 2023-07-06
- RYDER, Alasdair Alan — director · British · appointed 2023-07-06
- WEST, Jonathan — director · British · appointed 2018-08-31
- YOUNG, Gary Donald — director · British · appointed 2023-07-06
- ANDREWS, Mark Thomas Beadle — director · British · appointed 2018-08-31 · resigned 2023-07-06
- BENGER, Stephen — director · British · appointed 2015-07-31 · resigned 2023-07-06
- DRAPER, Abigail Sarah — director · British · appointed 2023-07-06 · resigned 2025-03-31
- HOLLIN, Benjamin Michael — director · British · appointed 2013-07-16 · resigned 2015-07-31

### Beneficial owners (Persons with Significant Control)

- [Rsk Environment Limited](https://whiteintel.dev/entity/c2e05021-6125-5f5a-b2bb-06ffc00253fa) — 75–100% shares · corporate PSC · Scotland — since 2023-07-06
- Mr Stephen Benger — 75–100% shares · individual PSC — ceased 2023-07-06

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/08612475
- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/08612475

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **KIRTON WATER TREATMENT SERVICES LIMITED**. Human view: https://whiteintel.dev/entity/7d8c1e57-5a0e-5f1d-ae22-eaa2139e7cb8 · Structured JSON: https://whiteintel.dev/api/public/dossier/7d8c1e57-5a0e-5f1d-ae22-eaa2139e7cb8._

_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"._