---
title: "LEADENHALL SEARCH AND SELECTION LTD — Ownership Dossier"
canonical: https://whiteintel.dev/entity/62fb776c-eac2-5001-8920-4beca681222f
json: https://whiteintel.dev/api/public/dossier/62fb776c-eac2-5001-8920-4beca681222f
identifier: oo:GB-COH-09456233
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# LEADENHALL SEARCH AND SELECTION LTD

**Type:** Company  
**Jurisdiction:** GB  
**Identifier:** `oo:GB-COH-09456233`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/62fb776c-eac2-5001-8920-4beca681222f  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/62fb776c-eac2-5001-8920-4beca681222f  

## Ownership & control

### Owners / controllers

- **Mr Robert James Mcdowell** (beneficial owner) — https://whiteintel.dev/entity/9b53dc8e-4abc-5a7f-98bb-6610db25dcb4
- **Dr Mark William Somers** (beneficial owner) — https://whiteintel.dev/entity/cbac7531-c5a4-5c7c-ad6a-82d5aee02bcb
- **Mr Mark Andrew Mallaby Sisson** (beneficial owner) — https://whiteintel.dev/entity/a6dad3f8-6be7-567a-b2a9-d682d906320a
- **Mr. Michael James Brown** (beneficial owner) — https://whiteintel.dev/entity/f2c89ce3-a373-4ea1-97b4-72f17068e004
- **Mr Robert James Mcdowell** (beneficial owner) — https://whiteintel.dev/entity/7aeb1cf0-94bc-4c30-b3f8-6649e9333ce9
- **Mr Mark Andrew Mallaby Sisson** (beneficial owner) — https://whiteintel.dev/entity/264fb47f-8d05-4a5c-bbdd-9b8bc4380780
- **Dr Mark William Somers** (beneficial owner) — https://whiteintel.dev/entity/a872cb21-0905-40c1-b425-6e6abb9407ba

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

1. **Mr Robert James Mcdowell** — beneficial owner → *LEADENHALL SEARCH AND SELECTION LTD*
1. **Dr Mark William Somers** — beneficial owner → *LEADENHALL SEARCH AND SELECTION LTD*
1. **Mr Mark Andrew Mallaby Sisson** — beneficial owner → *LEADENHALL SEARCH AND SELECTION LTD*
1. **Mr. Michael James Brown** — beneficial owner → *LEADENHALL SEARCH AND SELECTION LTD*
1. **Mr Robert James Mcdowell** — beneficial owner → *LEADENHALL SEARCH AND SELECTION LTD*
1. **Mr Mark Andrew Mallaby Sisson** — beneficial owner → *LEADENHALL SEARCH AND SELECTION LTD*
1. **Dr Mark William Somers** — beneficial owner → *LEADENHALL SEARCH AND SELECTION LTD*

## Company profile (live · UK Companies House)

- **Company number:** `09456233`
- **Status:** active
- **Type:** ltd
- **Incorporated:** 2015-02-24
- **Registered office:** D N S House, 382 Kenton Road, Harrow, Middlesex, HA3 8DP, United Kingdom
- **SIC:** 78109

### Officers

- BROWN, Michael James, Mr. — director · English · appointed 2021-08-03
- MCDOWELL, Robert James — director · British · appointed 2019-07-15
- SISSON, Mark Andrew Mallaby — director · British · appointed 2015-02-24 · resigned 2020-05-04
- SOMERS, Mark William, Dr — director · British · appointed 2020-05-04 · resigned 2021-08-03
- SOMERS, Mark William, Dr — director · British · appointed 2015-02-24 · resigned 2015-02-24

### Beneficial owners (Persons with Significant Control)

- Mr Robert James Mcdowell — significant influence or control · individual PSC · United Kingdom — since 2021-08-03
- Mr. Michael James Brown — significant influence or control · individual PSC · United Kingdom — since 2021-08-03
- Dr Mark William Somers — significant influence or control · individual PSC · United Kingdom — ceased 2021-08-18
- Mr Mark Andrew Mallaby Sisson — significant influence or control · individual PSC · England — ceased 2020-05-04

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/09456233
- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/09456233

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **LEADENHALL SEARCH AND SELECTION LTD**. Human view: https://whiteintel.dev/entity/62fb776c-eac2-5001-8920-4beca681222f · Structured JSON: https://whiteintel.dev/api/public/dossier/62fb776c-eac2-5001-8920-4beca681222f._

_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"._