EUROREGISTRY
GB · Person with significant control
John Frederik Hartz
John Frederik Hartz is recorded on the Companies House register of people with significant control for 8 UK companies.
Register details
Facts
- Name on the register
- Mr John Frederik Hartz
- Type
- Individual
- Nationality
- Danish
- Country of residence
- United Kingdom
- Year of birth
- 1963
- Significant control now
- 8 UK companies
- First notified
- 6 December 2011
- Source
- Companies House register of people with significant control, 20 September 2026
At a glance
John Frederik Hartz's companies
- John Frederik Hartz owns 75% or more of the shares in 2 of the 8 companies listed below.
- Main lines of business: activities of other holding companies n.e.c. (1) and buying and selling of own real estate (1).
- Registered offices in London (5), St Peter Port (2) and 139 Fountainbridge (1).
- The companies were incorporated between 2012 and 2025.
- 5 of the companies also list other people or companies with significant control.
These details come from the register as published on 20 September 2026. The register can change at any time: check the current entry live before relying on it.
Companies
Significant control now
UK companies that list John Frederik Hartz as a person with significant control, with the nature of that control as registered.
| Company | Status | Incorporated | Town | Business | Nature of control | Since |
|---|---|---|---|---|---|---|
| SJ US INVESTMENT LLP OC457551 · Limited Liability Partnership | Active | 25 July 2025 | London | — | Holds more than 25% but not more than 50% of the voting rights; Has the right to more than 25% but not more than 50% of the surplus assets on a winding up | 25 July 2025 |
| SJ RE CO-INVEST II LLP OC457281 · Limited Liability Partnership | Active | 1 July 2025 | London | — | Holds more than 25% but not more than 50% of the voting rights; Has the right to more than 25% but not more than 50% of the surplus assets on a winding up | 1 July 2025 |
| DIDO SPADE OAK LTD 08042686 · Private Limited Company | Active | 24 April 2012 | London | Buying and selling of own real estate | Owns 75% or more of the shares; Holds 75% or more of the voting rights; Can appoint or remove a majority of the board of directors | 15 April 2025 |
| GM PROPCO LIMITED SC707626 · Private Limited Company | Active | 25 August 2021 | 139 Fountainbridge | Activities of other holding companies n.e.c. | Owns 75% or more of the shares; Holds 75% or more of the voting rights; Can appoint or remove a majority of the board of directors | 14 April 2025 |
| CHADLINGTON FARMING PARTNERSHIP LLP OC449937 · Limited Liability Partnership | Active | 13 November 2023 | London | — | Has the right to more than 25% but not more than 50% of the surplus assets on a winding up | 13 November 2023 |
| SJ RE CO-INVEST LLP OC440347 · Limited Liability Partnership | Active | 14 December 2021 | London | — | Has the right to more than 25% but not more than 50% of the surplus assets on a winding up | 14 December 2021 |
| CULTURA LIMITED OE026839 · Overseas Entity | Active | 17 February 2023 | St Peter Port | — | Owns more than 25% of the shares | 23 April 2020 |
| SJ CORPORATE SERVICES LIMITED OE002388 · Overseas Entity | Active | 25 October 2022 | St Peter Port | — | Owns more than 25% of the shares | 6 December 2011 |
Connections
Others with significant control of these companies
- Simon Eric Hugh TurnerSJ US INVESTMENT LLP
- Catherine Jean HartzCHADLINGTON FARMING PARTNERSHIP LLP
Explained
What significant control means
Every UK company must keep a register of the people with significant control over it and file it with Companies House. Someone has significant control if they own more than 25% of the shares or voting rights, can appoint or remove a majority of the board, or otherwise have significant influence or control. Companies can also be controlled through another company, which then appears on the register itself.
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