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The above diagram shows the color scheme of the layout in the main result page. The parent entities and officers are those entities, including individual and legal persons, have significant controls over the company in focus. The offspring entities and appointments are those entities that the company in focus can influence on.

Clicking the links on parent entities or officers, and offspring entities or managed companies will put them in focus and show upstream or downstream connections. In general, ascendant entities can be found by moving toward upstream, and descendant entities are by toward downstream. In this way, progenitor entities such as grandparent companies (parents of parent), sibling companies (children of parent), partner companies (parents of child), and progeny entities such as grandchild companies (children of child) can be found easily.

Parent entities and officers 10
  • 1
    Kitchener, Ellis Guy
    Born in August 1975
    Individual (6 offsprings)
    Officer
    2025-07-10 ~ now
    OF - Director → CIF 0
  • 2
    Hess, John Barnett
    Company Director born in April 1954
    Individual (4 offsprings)
    Officer
    1997-10-03 ~ 2015-02-13
    OF - Director → CIF 0
  • 3
    Hess, Leon
    Company Director born in March 1914
    Individual (3 offsprings)
    Officer
    1997-10-03 ~ 1999-05-07
    OF - Director → CIF 0
  • 4
    Semlitz, Stephen Michael
    Born in February 1953
    Individual (48 offsprings)
    Officer
    1997-10-03 ~ now
    OF - Director → CIF 0
  • 5
    Voelker, Heiko
    Company Director born in December 1962
    Individual (11 offsprings)
    Officer
    1998-03-12 ~ 2025-07-04
    OF - Director → CIF 0
  • 6
    O'neill, Jonathan Hugh
    Company Director born in March 1957
    Individual (44 offsprings)
    Officer
    1998-03-12 ~ 2024-10-15
    OF - Director → CIF 0
  • 7
    Merison, Jonathan Guy
    Born in January 1960
    Individual (8 offsprings)
    Officer
    2017-05-12 ~ now
    OF - Director → CIF 0
  • 8
    Hendel, Stephen Michael
    Born in October 1951
    Individual (16 offsprings)
    Officer
    1997-10-03 ~ now
    OF - Director → CIF 0
  • 9
    Garske, Paul Martin
    Born in October 1968
    Individual (57 offsprings)
    Officer
    2024-02-23 ~ now
    OF - Director → CIF 0
  • 10
    BREAMS SECRETARIES LIMITED
    - now 01057895
    BREAMS REGISTRARS AND NOMINEES LIMITED - 2016-08-17 01057895
    BREAMS NOMINEES LIMITED - 1981-12-31
    W.B. TRUSTEES LIMITED - 1976-12-31
    Floor 8, 71, Queen Victoria Street, London, England
    Active Corporate (44 parents, 511 offsprings)
    Officer
    1997-10-03 ~ 2021-06-30
    OF - Secretary → CIF 0
parent relation
Company in focus

HARTREE PARTNERS (UK) LIMITED

Period: 2015-02-13 ~ now
Company number: 03446989
Registered names
HARTREE PARTNERS (UK) LIMITED - now
Standard Industrial Classification
74909 - Other Professional, Scientific And Technical Activities N.e.c.

Related profiles found in government register
  • HARTREE PARTNERS (UK) LIMITED
    Info
    HESS ENERGY TRADING COMPANY (UK) LIMITED - 2015-02-13
    Registered number 03446989
    Level 8 123 Buckingham Palace Road, London SW1W 9SH
    PRIVATE LIMITED COMPANY incorporated on 1997-10-03 (28 years 7 months). The status of the company number is Active.
    The last date of confirmation statement was made at 2025-05-01
    CIF 0
  • HARTREE PARTNERS (UK) LIMITED
    S
    Registered number 03446989
    Level 8, 123 Buckingham Palace Road, London, England, SW1W 9SH
    Private Company Limited By Shares in Uk Register Of Companies, United Kingdom
    CIF 1
    Private Limited Company in Companies House Register, England
    CIF 2 CIF 3
child relation
Offspring entities and appointments 5
  • 1
    HARTREE GLOBAL SERVICES HOLDINGS LIMITED
    - now 10982746
    HARTREE PARTNERS LNG 1 LIMITED
    - 2026-01-08 10982746
    SEASCALE POWER LIMITED - 2022-08-31
    Level 8 123 Buckingham Palace Road, London, England
    Active Corporate (6 parents)
    Person with significant control
    2026-01-05 ~ now
    CIF 4 - Ownership of voting rights - 75% or more OE
    CIF 4 - Ownership of shares – 75% or more OE
    CIF 4 - Right to appoint or remove directors OE
  • 2
    HARTREE MI UK LIMITED
    15612318
    Level 8 123 Buckingham Palace Road, London, England
    Active Corporate (9 parents)
    Person with significant control
    2024-09-11 ~ now
    CIF 5 - Ownership of voting rights - More than 50% but less than 75% OE
    CIF 5 - Ownership of shares – More than 50% but less than 75% OE
  • 3
    HARTREE PARTNERS COMMODITIES U.K. LIMITED
    - now 08340079
    HETCO ENERGY COMMODITIES UK LIMITED - 2015-02-13
    HETCO UK DERIVATIVES LIMITED - 2013-01-25
    Level 8 123 Buckingham Palace Road, London, England
    Active Corporate (5 parents)
    Person with significant control
    2022-12-29 ~ now
    CIF 2 - Ownership of voting rights - 75% or more OE
    CIF 2 - Ownership of shares – 75% or more OE
    CIF 2 - Right to appoint or remove directors OE
  • 4
    HARTREE PARTNERS CONSULTING (UK) LIMITED
    11143145
    Level 8 123 Buckingham Palace Road, London, England
    Active Corporate (8 parents, 5 offsprings)
    Person with significant control
    2022-12-29 ~ now
    CIF 3 - Ownership of voting rights - 75% or more OE
    CIF 3 - Ownership of shares – 75% or more OE
    CIF 3 - Right to appoint or remove directors OE
  • 5
    HARTREE SOLARIS LIMITED
    16675858
    Level 8 123 Buckingham Palace Road, London, United Kingdom
    Active Corporate (4 parents)
    Person with significant control
    2025-08-27 ~ now
    CIF 1 - Ownership of shares – 75% or more OE
    CIF 1 - Ownership of voting rights - 75% or more OE
    CIF 1 - Right to appoint or remove directors OE

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Contains public sector information retrieved at 22 April 2026 and licensed under the Open Government Licence v3.0.