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Hartree Solutions (UK) Limited

Hartree Solutions (UK) Limited is an active company incorporated on 18 February 2016 with the registered office located in London, Greater London. Hartree Solutions (UK) Limited was registered 9 years ago.
Status
Active
Active since incorporation
Company No
10013025
Private limited company
Age
9 years
Incorporated 18 February 2016
Size
Micro
Turnover is under £1M
Balance sheet is under £500,000
Under 10 employees
Confirmation
Submitted
Dated 1 May 2025 (8 months ago)
Next confirmation dated 1 May 2026
Due by 15 May 2026 (4 months remaining)
Last change occurred 3 years ago
Accounts
Submitted
For period 1 Jan31 Dec 2024 (1 year)
Accounts type is Audit Exemption Subsidiary
Next accounts for period 31 December 2025
Due by 30 September 2026 (8 months remaining)
Contact
Address
Level 8 123 Buckingham Palace Road
London
SW1W 9SH
England
Address changed on 9 Jan 2026 (2 days ago)
Previous address was 2nd Floor, Cardinal Place 100 Victoria Street London SW1E 5JL England
Telephone
Unreported
Email
Unreported
Website
People
Officers
3
Shareholders
1
Controllers (PSC)
1
Director • British • Lives in England • Born in Sep 1964
Director • British • Lives in UK • Born in Oct 1968
Director • American • Lives in United States • Born in Feb 1953
Hartree Partners Power Holdings (UK) Limited
PSC
Shareholders, PSCs & Group Structure
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Mutual Companies
Hartree Partners Supply (UK) Limited
Stephen John Mason, Stephen Michael Semlitz, and 1 more are mutual people.
Active
Kingsmoor Power Limited
Stephen John Mason, Stephen Michael Semlitz, and 1 more are mutual people.
Active
Hartree Partners Power Holdings (UK) Limited
Stephen John Mason, Stephen Michael Semlitz, and 1 more are mutual people.
Active
Hartree Peaking (Holdings) Limited
Stephen John Mason, Stephen Michael Semlitz, and 1 more are mutual people.
Active
Hartree Peaking 2 (Holdings) Limited
Stephen John Mason, Stephen Michael Semlitz, and 1 more are mutual people.
Active
Hartree Solutions Limited
Paul Martin Garske, Stephen John Mason, and 1 more are mutual people.
Active
Hartree Land Limited
Paul Martin Garske, Stephen John Mason, and 1 more are mutual people.
Active
Haverton Hill Power Limited
Paul Martin Garske, Stephen John Mason, and 1 more are mutual people.
Active
Financials
Net Assets, Total Assets & Total Liabilities (2016–2024)
Period Ended
31 Dec 2024
For period 31 Dec31 Dec 2024
Traded for 12 months
Cash in Bank
£680
Decreased by £914 (-57%)
Turnover
-£1.47K
Decreased by £201.85K (-101%)
Employees
Unreported
Same as previous period
Total Assets
£195.48K
Increased by £94.71K (+94%)
Total Liabilities
-£3.62M
Increased by £184.86K (+5%)
Net Assets
-£3.42M
Decreased by £90.15K (+3%)
Debt Ratio (%)
1850%
Decreased by 1555.23% (-46%)
Latest Activity
Registered Address Changed
2 Days Ago on 9 Jan 2026
Subsidiary Accounts Submitted
3 Months Ago on 24 Sep 2025
Confirmation Submitted
8 Months Ago on 12 May 2025
Subsidiary Accounts Submitted
1 Year 3 Months Ago on 27 Sep 2024
Jonathan Hugh O'neill Resigned
1 Year 6 Months Ago on 8 Jul 2024
Mr Stephen John Mason Appointed
1 Year 6 Months Ago on 8 Jul 2024
Confirmation Submitted
1 Year 8 Months Ago on 10 May 2024
Mr Stephen Michael Semlitz Details Changed
2 Years Ago on 28 Dec 2023
Subsidiary Accounts Submitted
2 Years 2 Months Ago on 25 Oct 2023
Mr Jonathan Hugh O'neill Details Changed
9 Years Ago on 18 Feb 2016
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Documents
Registered office address changed from 2nd Floor, Cardinal Place 100 Victoria Street London SW1E 5JL England to Level 8 123 Buckingham Palace Road London SW1W 9SH on 9 January 2026
Submitted on 9 Jan 2026
Audit exemption subsidiary accounts made up to 31 December 2024
Submitted on 24 Sep 2025
Consolidated accounts of parent company for subsidiary company period ending 31/12/24
Submitted on 24 Sep 2025
Audit exemption statement of guarantee by parent company for period ending 31/12/24
Submitted on 24 Sep 2025
Notice of agreement to exemption from audit of accounts for period ending 31/12/24
Submitted on 24 Sep 2025
Confirmation statement made on 1 May 2025 with no updates
Submitted on 12 May 2025
Audit exemption statement of guarantee by parent company for period ending 31/12/23
Submitted on 27 Sep 2024
Notice of agreement to exemption from audit of accounts for period ending 31/12/23
Submitted on 27 Sep 2024
Consolidated accounts of parent company for subsidiary company period ending 31/12/23
Submitted on 27 Sep 2024
Audit exemption subsidiary accounts made up to 31 December 2023
Submitted on 27 Sep 2024
Repayment History
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