logo
explain how to read the page

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 6
  • 1
    Mason, Stephen John
    Born in September 1964
    Individual (72 offsprings)
    Officer
    2024-07-08 ~ now
    OF - Director → CIF 0
  • 2
    Semlitz, Stephen Michael
    Born in February 1953
    Individual (48 offsprings)
    Officer
    2016-02-18 ~ now
    OF - Director → CIF 0
  • 3
    O'neill, Jonathan Hugh
    Company Director born in March 1957
    Individual (44 offsprings)
    Officer
    2016-02-18 ~ 2024-07-08
    OF - Director → CIF 0
  • 4
    Garske, Paul Martin
    Born in October 1968
    Individual (57 offsprings)
    Officer
    2016-02-18 ~ now
    OF - Director → CIF 0
  • 5
    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
    2016-02-18 ~ 2021-06-30
    OF - Secretary → CIF 0
  • 6
    HARTREE PARTNERS POWER & GAS COMPANY (UK) LIMITED
    - now 04308186
    HESS ENERGY POWER & GAS COMPANY (UK) LIMITED - 2015-02-13
    2nd Floor, Cardinal Place, 100, Victoria Street, London, England
    Active Corporate (13 parents, 19 offsprings)
    Person with significant control
    2016-04-06 ~ 2020-03-16
    PE - Ownership of shares – 75% or moreCIF 0
    PE - Ownership of voting rights - 75% or moreCIF 0
    PE - Right to appoint or remove directorsCIF 0
parent relation
Company in focus

HARTREE PARTNERS POWER HOLDINGS (UK) LIMITED

Period: 2016-02-18 ~ now
Company number: 10013510 16127362
Registered name
HARTREE PARTNERS POWER HOLDINGS (UK) LIMITED - now 16127362
Standard Industrial Classification
74909 - Other Professional, Scientific And Technical Activities N.e.c.

Related profiles found in government register
  • HARTREE PARTNERS POWER HOLDINGS (UK) LIMITED
    Info
    Registered number 10013510
    Level 8 123 Buckingham Palace Road, London SW1W 9SH
    PRIVATE LIMITED COMPANY incorporated on 2016-02-18 (10 years 3 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 POWER HOLDINGS (UK) LIMITED
    S
    Registered number 10013510
    2nd Floor, Cardinal Place, 100, Victoria Street, London, England, SW1E 5JL
    Private Limited Company in Companies House, England And Wales
    CIF 1
  • HARTREE PARTNERS POWER HOLDINGS (UK) LIMITED
    S
    Registered number 10013510
    Level 8, 123 Buckingham Palace Road, London, England, SW1W 9SH
    Companies Act 2006 in Companies House - England And Wales Companies Registry, England
    CIF 2
    Private Company Limited By Shares in Companies House, England
    CIF 3
child relation
Offspring entities and appointments 7
  • 1
    HARTREE LAND LIMITED
    - now 10982796
    GILWILLY POWER LIMITED - 2019-10-11
    Level 8 123 Buckingham Palace Road, London, England
    Active Corporate (7 parents)
    Person with significant control
    2022-12-29 ~ now
    CIF 4 - Ownership of shares – 75% or more OE
    CIF 4 - Right to appoint or remove directors OE
    CIF 4 - Ownership of voting rights - 75% or more OE
  • 2
    HARTREE PARTNERS POWER HOLDINGS 2 (UK) LIMITED
    16127362 10013510
    Level 8 123 Buckingham Palace Road, London, England
    Active Corporate (4 parents, 3 offsprings)
    Person with significant control
    2025-12-22 ~ now
    CIF 5 - Right to appoint or remove directors OE
    CIF 5 - Ownership of shares – 75% or more OE
    CIF 5 - Ownership of voting rights - 75% or more OE
  • 3
    HARTREE PEAKING (HOLDINGS) LIMITED
    - now 10305664 10335196
    LAMBS FIELD LIMITED
    - 2019-10-09 10305664
    Level 8 123 Buckingham Palace Road, London, England
    Active Corporate (6 parents, 3 offsprings)
    Person with significant control
    2016-08-01 ~ now
    CIF 2 - Right to appoint or remove directors OE
    CIF 2 - Ownership of shares – 75% or more OE
    CIF 2 - Ownership of voting rights - 75% or more OE
  • 4
    HARTREE PEAKING 2 (HOLDINGS) LIMITED
    - now 10335196 10305664
    ST HELEN'S POWER LIMITED
    - 2020-05-26 10335196
    Level 8 123 Buckingham Palace Road, London, England
    Active Corporate (7 parents, 3 offsprings)
    Person with significant control
    2018-05-01 ~ now
    CIF 6 - Ownership of voting rights - 75% or more OE
    CIF 6 - Ownership of shares – 75% or more OE
    CIF 6 - Right to appoint or remove directors OE
  • 5
    HARTREE SOLUTIONS (UK) LIMITED
    - now 10013025
    RYDBERG DEVELOPMENT COMPANY LIMITED
    - 2021-11-19 10013025
    Level 8 123 Buckingham Palace Road, London, England
    Active Corporate (6 parents, 8 offsprings)
    Person with significant control
    2016-05-06 ~ now
    CIF 3 - Right to appoint or remove directors OE
    CIF 3 - Ownership of voting rights - 75% or more OE
    CIF 3 - Ownership of shares – 75% or more OE
  • 6
    KINGSMOOR POWER LIMITED
    10012989
    Level 8 123 Buckingham Palace Road, London, England
    Active Corporate (7 parents)
    Person with significant control
    2016-04-06 ~ 2020-01-22
    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
  • 7
    POWERTREE (HOLDINGS) LIMITED
    10066723
    Strelley Hall Main Street, Strelley, Nottingham, England
    Active Corporate (6 parents, 4 offsprings)
    Person with significant control
    2017-03-15 ~ now
    CIF 7 - Ownership of shares – More than 50% but less than 75% OE

The content of this website is protected by AgonGuard.

© 2022- Polylogarithmic Technology Ltd (Registered in England and Wales No. 14256313). All rights reserved.

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