---
title: "MAYFAIR EQUITY PARTNERS I YS LP — Ownership Dossier"
canonical: https://whiteintel.dev/entity/c6512a76-7c4e-55d7-8531-bfb83b598784
json: https://whiteintel.dev/api/public/dossier/c6512a76-7c4e-55d7-8531-bfb83b598784
identifier: oo:GB-COH-SL025713
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# MAYFAIR EQUITY PARTNERS I YS LP

**Type:** Company  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `oo:GB-COH-SL025713`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/c6512a76-7c4e-55d7-8531-bfb83b598784  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/c6512a76-7c4e-55d7-8531-bfb83b598784  

## Ownership & control

### Owners / controllers

- **HERMES GPE HORIZON CO-INVESTMENT LP** (beneficial owner) — https://whiteintel.dev/entity/a42bc04f-4710-5332-ab1e-b6d8a23560f8
- **MAYFAIR EQUITY PARTNERS LLP** (beneficial owner) — https://whiteintel.dev/entity/0d38162d-9d92-5332-a3bc-6d4452b44e6c
- **MAYFAIR EQUITY PARTNERS I CO-INVESTOR GP LIMITED** (beneficial owner) — https://whiteintel.dev/entity/82039f6a-2d98-574b-a4d6-6bc7948efe3c

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

A **96-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:** `SL025713`
- **Status:** active
- **Type:** limited partnership
- **Incorporated:** 2016-03-23
- **Registered office:** 50 Lothian Road, Festival Square, Edinburgh, EH3 9WJ

### Beneficial owners (Persons with Significant Control)

- [Hermes Gpe Horizon Co-Investment Lp](https://whiteintel.dev/entity/a42bc04f-4710-5332-ab1e-b6d8a23560f8) — 75–100% shares · corporate PSC · United Kingdom — since 2017-06-26
- [Mayfair Equity Partners Llp](https://whiteintel.dev/entity/0d38162d-9d92-5332-a3bc-6d4452b44e6c) — significant influence or control · corporate PSC · United Kingdom — since 2017-06-26
- [Mayfair Equity Partners I Co-Investor Gp Limited](https://whiteintel.dev/entity/82039f6a-2d98-574b-a4d6-6bc7948efe3c) — right to appoint and remove person · corporate PSC · United Kingdom — since 2017-06-26

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/SL025713
- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/SL025713

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **MAYFAIR EQUITY PARTNERS I YS LP**. Human view: https://whiteintel.dev/entity/c6512a76-7c4e-55d7-8531-bfb83b598784 · Structured JSON: https://whiteintel.dev/api/public/dossier/c6512a76-7c4e-55d7-8531-bfb83b598784._

_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"._