---
title: "IOMART GROUP PLC — Ownership Dossier"
canonical: https://whiteintel.dev/entity/c2e6a198-4d8b-5446-a000-e4065cdbf560
json: https://whiteintel.dev/api/public/dossier/c2e6a198-4d8b-5446-a000-e4065cdbf560
identifier: oo:GB-COH-SC204560
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# IOMART GROUP PLC

**Type:** Company  
**Jurisdiction:** GB  
**Identifier:** `oo:GB-COH-SC204560`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/c2e6a198-4d8b-5446-a000-e4065cdbf560  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/c2e6a198-4d8b-5446-a000-e4065cdbf560  

## Cross-source identity

The same real-world entity, resolved across sources:

- **IOMART GROUP PLC** — GLEIF · `lei:213800MME6X5NGP7NC68` — https://whiteintel.dev/entity/72e65208-7766-5f34-83f7-e46604cfadd9

## Ownership & control

### Owners / controllers

- **Mr Angus Macsween** (beneficial owner) — https://whiteintel.dev/entity/f4e61f5b-3b7d-5b8b-a51c-da24b323ad4d
- **Miss Lucy Rebecca Dimes** (beneficial owner) — https://whiteintel.dev/entity/0421251e-47f4-5c1f-bd36-b754cb33d4ad
- **Mr Scott Thomas Cunningham** (beneficial owner) — https://whiteintel.dev/entity/89d9a021-8246-545f-bfb3-4d7015ce4a1d
- **Miss Lucy Rebecca Dimes** (beneficial owner) — https://whiteintel.dev/entity/7eae1bb4-215f-40ba-beee-864626b4b9a4
- **Mr Angus Macsween** (beneficial owner) — https://whiteintel.dev/entity/ed69ad28-7c12-415c-a8e5-c86ba72f1a91
- **Mr Scott Thomas Cunningham** (beneficial owner) — https://whiteintel.dev/entity/4e4e7399-c77f-4435-93d1-b856a4681f63
- **Mr Reece Garethe Donovan** (beneficial owner) — https://whiteintel.dev/entity/271f3a0e-fc7f-4ff3-ace0-1448368ec9af
- **GRESHAM HOUSE ASSET MANAGEMENT LIMITED** (beneficial owner) — 37.5% — https://whiteintel.dev/entity/662ed7c3-a531-53c7-aedd-3d76735ce46a

### Holdings / subsidiaries

- **BYTEMARK HOLDINGS LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/ba77708a-ae78-58d9-8175-fbb7c4625391
- **LONDON DATA EXCHANGE LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/79264303-dd02-5fb5-9d68-2528e7f76d87
- **EXTRINSICA GLOBAL HOLDINGS LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/7726a7bd-e282-51f2-b319-13a7f4243734
- **CONCEPTA CAPITAL LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/60829359-d36f-50de-ad01-46ea222d964b
- **ACCESSPOINT GROUP HOLDINGS LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/8f8488eb-16e4-5771-b149-1b02d551c5d7
- **EASYSPACE LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/2887a1e5-19ec-5233-96a4-d1477f2b6e96
- **LDEX CONNECT LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/c2110974-30f6-558b-a6da-8bd3a4ac95ac
- **Global Gold Holdings Limited** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/d6cf97f9-9c92-4846-bfde-a48ed7ecb660
- **MEMSET LTD** (beneficial owner) — https://whiteintel.dev/entity/b9903160-7189-57e3-be34-963380532984
- **IOMART DATACENTRES LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/8e17cc8a-1a92-4af0-ac62-c885ca375bcf
- **SONASSI LTD** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/af8631d6-0d0e-5501-9418-570fcf2d4e03
- **Backup Technology Holdings Ltd** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/8f963994-2594-49e5-b3f4-9c1857a05172
- **IOMART MANAGED SERVICES LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/d2b37460-d250-556f-aa37-cc62ce931a24
- **BYTEMARK LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/958645ab-fc94-57bd-b48c-5d50cf086dd9
- **ATECH GROUP LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/a4b4ebad-d704-5f17-9a39-97115e4a955b
- **IOMART DATA CENTRE SERVICES LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/d334937c-9fb1-4100-8cd7-7eba37182ba4
- **LDEX GROUP LIMITED** (beneficial owner) — https://whiteintel.dev/entity/fc9e991e-acb9-5ef0-aceb-56d4babcb81d
- **RAPIDSWITCH LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/a5d40ccc-6fef-5617-a02d-093139c553c0
- **CRISTIE DATA LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/5afe009c-8972-5799-ba79-8059fc6a3abf
- **UNITED COMMUNICATIONS LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/ac1115f8-7445-5873-89d4-0f180ab8b870
- **IOMART CLOUD SERVICES LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/a766e0da-4a57-5926-8a72-db67c9131f06
- **SYSTEMS UP LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/6b9b50d5-b4b8-5bd8-b83f-379f2697dc6b

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

1. **Mr Angus Macsween** — beneficial owner → *IOMART GROUP PLC*
1. **Miss Lucy Rebecca Dimes** — beneficial owner → *IOMART GROUP PLC*
1. **Mr Scott Thomas Cunningham** — beneficial owner → *IOMART GROUP PLC*
1. **Miss Lucy Rebecca Dimes** — beneficial owner → *IOMART GROUP PLC*
1. **Mr Angus Macsween** — beneficial owner → *IOMART GROUP PLC*
1. **Mr Scott Thomas Cunningham** — beneficial owner → *IOMART GROUP PLC*
1. **Mr Reece Garethe Donovan** — beneficial owner → *IOMART GROUP PLC*
1. **GRESHAM HOUSE ASSET MANAGEMENT LIMITED** — beneficial owner 37.5% → *IOMART GROUP PLC*
2. **GRESHAM HOUSE LIMITED** — ultimate parent → *GRESHAM HOUSE ASSET MANAGEMENT LIMITED*
2. **GRESHAM HOUSE LIMITED** — parent → *GRESHAM HOUSE ASSET MANAGEMENT LIMITED*
2. **GRESHAM HOUSE HOLDINGS LIMITED** — beneficial owner 87.5% → *GRESHAM HOUSE ASSET MANAGEMENT LIMITED*
3. **Gresham House Limited** — beneficial owner 87.5% → *GRESHAM HOUSE HOLDINGS LIMITED*
3. **Mr Eric Louis Zinterhofer** — beneficial owner 50% → *GRESHAM HOUSE LIMITED*
3. **Mr Erol Ekrem Uzumeri** — beneficial owner 50% → *GRESHAM HOUSE LIMITED*
3. **Mr Carl Ludwig Oliver Haarmann** — beneficial owner 50% → *GRESHAM HOUSE LIMITED*
3. **Mr Eric Louis Zinterhofer** — beneficial owner → *GRESHAM HOUSE LIMITED*
3. **Mr Erol Ekrem Uzumeri** — beneficial owner → *GRESHAM HOUSE LIMITED*
3. **Mr Carl Ludwig Oliver Haarmann** — beneficial owner → *GRESHAM HOUSE LIMITED*

## Company profile (live · UK Companies House)

- **Company number:** `SC204560`
- **Status:** active
- **Type:** plc
- **Incorporated:** 2000-02-28
- **Registered office:** 6 Atlantic Quay, 55 Robertson Street, Glasgow, G2 8JD, Scotland
- **SIC:** 62012, 62020, 63110

### Officers

- [PINSENT MASONS SECRETARIAL LIMITED](https://whiteintel.dev/entity/4cd3ee32-bc25-581b-95e6-0c580796349e) — corporate secretary · appointed 2026-06-26
- CHAMBERLAIN, Adrian — director · British · appointed 2023-06-01
- LAMONT, Kathryn Elizabeth — director · British · appointed 2019-02-27
- LAST, Richard — director · British · appointed 2024-06-12
- MACSWEEN, Angus — director · British · appointed 2020-10-01
- NABAVI, Annette Patricia, Dr — director · British · appointed 2023-05-25
- BROWN, Julie — secretary · appointed 2023-02-28 · resigned 2026-06-26
- DOBBIE, William — secretary · British · appointed 2000-03-14 · resigned 2000-03-21
- HALL, Bruce Alexander — secretary · British · appointed 2008-07-11 · resigned 2018-02-02
- MCDONALD, Andrew James — secretary · appointed 2018-02-02 · resigned 2023-02-28
- MOIR, Stewart James — secretary · British · appointed 2000-03-21 · resigned 2008-07-11
- MD SECRETARIES LIMITED — corporate nominee secretary · appointed 2000-02-28 · resigned 2000-03-14
- BATTERHAM, Christopher Michael — director · British · appointed 2005-09-14 · resigned 2016-08-24
- BEVERIDGE, Crawford William — director · British · appointed 2011-09-29 · resigned 2017-08-23
- CUNNINGHAM, Scott Thomas — director · British · appointed 2018-09-04 · resigned 2026-06-26
- DIMES, Lucy Rebecca — director · British · appointed 2022-08-30 · resigned 2025-05-29
- DOBBIE, William — director · British · appointed 2000-03-14 · resigned 2005-06-20
- DONOVAN, Reece Garethe — director · British · appointed 2020-03-30 · resigned 2023-09-15
- FINLAYSON, Neil, Mr. — director · British · appointed 2000-03-14 · resigned 2002-06-26
- FORREST, Stuart — director · British · appointed 2005-06-20 · resigned 2008-03-31

### Beneficial owners (Persons with Significant Control)

- [Gresham House Asset Management Limited](https://whiteintel.dev/entity/662ed7c3-a531-53c7-aedd-3d76735ce46a) — 25–50% shares · corporate PSC · England — since 2025-08-01
- Miss Lucy Rebecca Dimes — significant influence or control · individual PSC · Scotland — ceased 2025-05-29
- Mr Reece Garethe Donovan — significant influence or control · individual PSC · Scotland — ceased 2023-09-15
- Mr Scott Thomas Cunningham — significant influence or control · individual PSC · Scotland — ceased 2026-06-26
- Mr Angus Macsween — significant influence or control · individual PSC — ceased 2020-10-01

## Provenance

- OpenOwnership — https://find-and-update.company-information.service.gov.uk/company/SC204560
- companies_house_bulk — https://find-and-update.company-information.service.gov.uk/company/SC204560

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **IOMART GROUP PLC**. Human view: https://whiteintel.dev/entity/c2e6a198-4d8b-5446-a000-e4065cdbf560 · Structured JSON: https://whiteintel.dev/api/public/dossier/c2e6a198-4d8b-5446-a000-e4065cdbf560._

_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"._