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The above diagram shows the color scheme of the layout in the main result page. The parent entities and officers who have significant controls over the individuals in focus are always inapplicable. The offspring entities and appointments are those entities that the individuals 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.

Jump to: Offsprings
Parent entities and officers
Inapplicable
parent relation
Individuals in focus

Hartas, John Stephen, Dr

    Related profiles found in government register
  • Hartas, John Stephen, Dr
    British born in February 1958

    Resident in United Kingdom

    Registered addresses and corresponding companies
    • 5&6 Manor Court, Manor Garth, Scarborough, North Yorkshire, YO11 3TU, England

      IIF 1 IIF 2 IIF 3
    • 5&6, Manor Court, Manor Garth, Scarborough, North Yorkshire, YO11 3TU, United Kingdom

      IIF 8
    • Unit A3, St Hilda's Business Centre, The Ropery, Whitby, North Yorkshire, YO22 4ET, England

      IIF 9
  • Hartas, John Stephen, Dr
    British director born in February 1958

    Resident in United Kingdom

    Registered addresses and corresponding companies
    • Dalmar House, Barras Lane Estate, Dalston, Carlisle, CA5 7NY, United Kingdom

      IIF 10
    • 5&6 Manor Court, Manor Garth, Scarborough, North Yorkshire, YO11 3TU, England

      IIF 11 IIF 12
    • 62/63, Westborough, Scarborough, North Yorkshire, YO11 1TS, United Kingdom

      IIF 13 IIF 14
    • 16 Elm Grove, Whitby, North Yorkshire, YO21 1JA, England

      IIF 15
  • Hartas, John Stephen, Dr
    British managing director born in February 1958

    Resident in United Kingdom

    Registered addresses and corresponding companies
    • Dalmar House, Barras Lane Estate, Dalston, Carlisle, CA5 7NY, United Kingdom

      IIF 16
    • 5&6 Manor Court, Manor Garth, Scarborough, North Yorkshire, YO11 3TU, England

      IIF 17
    • 62/63 Westborough, Scarborough, North Yorkshire, YO11 1TS, England

      IIF 18
    • Unit F16, The Ropery, Whitby, YO22 4ET, England

      IIF 19 IIF 20
  • Hartas, John Stephen, Dr
    born in February 1958

    Resident in United Kingdom

    Registered addresses and corresponding companies
    • 6, Newton Street, Whitby, North Yorkshire, YO21 1QX, United Kingdom

      IIF 21
  • Dr John Stephen Hartas
    British born in February 1958

    Resident in United Kingdom

    Registered addresses and corresponding companies
child relation
Offspring entities and appointments 18
  • 1
    AUTONOMOUS SYSTEMS LIMITED
    06133968
    5&6 Manor Court Manor Garth, Scarborough, North Yorkshire, England
    Active Corporate (5 parents)
    Equity (Company account)
    10,791 GBP2024-03-31
    Officer
    2007-03-01 ~ now
    IIF 2 - Director → ME
    Person with significant control
    2020-07-15 ~ now
    IIF 25 - Ownership of shares – More than 50% but less than 75% OE
    IIF 25 - Right to appoint or remove directors OE
    IIF 25 - Ownership of voting rights - More than 50% but less than 75% OE
  • 2
    CORTEX MARKETING COMPANY LIMITED
    14852926
    5&6 Manor Court Manor Garth, Scarborough, North Yorkshire, United Kingdom
    Active Corporate (4 parents)
    Equity (Company account)
    5,222 GBP2024-05-31
    Officer
    2023-05-08 ~ now
    IIF 9 - Director → ME
    Person with significant control
    2024-11-25 ~ 2025-05-01
    IIF 28 - Ownership of shares – 75% or more OE
    IIF 28 - Right to appoint or remove directors OE
    IIF 28 - Ownership of voting rights - 75% or more OE
  • 3
    CORTEX SYSTEMS LIMITED
    15474846
    Unit F16 The Ropery, Whitby, England
    Active Corporate (3 parents)
    Officer
    2024-02-09 ~ now
    IIF 19 - Director → ME
  • 4
    ELYSIAN FUELS 12 LLP
    OC373681 OC375296, OC371379, OC351409... (more)
    30 Finsbury Square, London
    Dissolved Corporate (77 parents)
    Officer
    2012-10-23 ~ dissolved
    IIF 21 - LLP Member → ME
  • 5
    FUTURISTICS FICTION PROTOTYPING LIMITED
    15453563
    5&6 Manor Court, Manor Garth, Scarborough, North Yorkshire, United Kingdom
    Active Corporate (3 parents)
    Officer
    2024-01-30 ~ now
    IIF 8 - Director → ME
  • 6
    G & J HARTAS LIMITED
    12155215
    5&6 Manor Court Manor Garth, Scarborough, North Yorkshire, England
    Active Corporate (2 parents)
    Equity (Company account)
    -1,596 GBP2024-03-31
    Officer
    2019-08-14 ~ now
    IIF 6 - Director → ME
    Person with significant control
    2019-08-14 ~ now
    IIF 24 - Ownership of shares – More than 25% but not more than 50% OE
    IIF 24 - Ownership of voting rights - More than 25% but not more than 50% OE
  • 7
    HARTAS & SONS LIMITED
    08662485
    5&6 Manor Court Manor Garth, Scarborough, North Yorkshire, England
    Active Corporate (1 parent, 3 offsprings)
    Equity (Company account)
    90,133 GBP2024-03-31
    Officer
    2013-08-23 ~ now
    IIF 1 - Director → ME
    Person with significant control
    2016-04-06 ~ now
    IIF 27 - Ownership of shares – 75% or more OE
    IIF 27 - Ownership of voting rights - 75% or more OE
  • 8
    HARTAS TRADINGS LTD
    12986010
    16 Elm Grove, Whitby, England
    Dissolved Corporate (2 parents)
    Equity (Company account)
    -85 GBP2022-03-31
    Officer
    2021-11-26 ~ dissolved
    IIF 15 - Director → ME
    Person with significant control
    2021-11-26 ~ dissolved
    IIF 30 - Ownership of voting rights - More than 25% but not more than 50% OE
    IIF 30 - Ownership of shares – More than 25% but not more than 50% OE
  • 9
    IDEALOGIX LIMITED
    - now 13257677
    SYNTHESYS RESEARCH LIMITED
    - 2023-12-20 13257677
    5&6 Manor Court Manor Garth, Scarborough, North Yorkshire, England
    Active Corporate (3 parents)
    Equity (Company account)
    -12,495 GBP2024-03-31
    Officer
    2021-03-10 ~ now
    IIF 7 - Director → ME
    Person with significant control
    2024-06-25 ~ now
    IIF 26 - Ownership of voting rights - More than 50% but less than 75% OE
    IIF 26 - Right to appoint or remove directors OE
    IIF 26 - Ownership of shares – More than 50% but less than 75% OE
  • 10
    SALOME STRATEGY LIMITED
    13279361
    5&6 Manor Court Manor Garth, Scarborough, North Yorkshire, England
    Active Corporate (4 parents)
    Equity (Company account)
    29,500 GBP2024-03-31
    Officer
    2021-03-19 ~ 2021-05-01
    IIF 18 - Director → ME
    2023-12-15 ~ 2024-05-24
    IIF 17 - Director → ME
    2024-07-25 ~ now
    IIF 5 - Director → ME
    Person with significant control
    2024-11-25 ~ now
    IIF 29 - Ownership of voting rights - 75% or more OE
    IIF 29 - Ownership of shares – 75% or more OE
  • 11
    SENTIES LTD
    14235890
    Unit F16 The Ropery, Whitby, England
    Dissolved Corporate (2 parents)
    Officer
    2022-07-14 ~ dissolved
    IIF 20 - Director → ME
  • 12
    SPARKWOOD EVENTS & MARKETING LIMITED
    11374882
    62/63 Westborough, Scarborough, North Yorkshire, United Kingdom
    Dissolved Corporate (4 parents)
    Equity (Company account)
    100 GBP2019-05-31
    Officer
    2018-05-22 ~ dissolved
    IIF 14 - Director → ME
  • 13
    SYNTHESYS COMPLIANCE CONSULTANCY LIMITED
    13813884
    5&6 Manor Court Manor Garth, Scarborough, North Yorkshire, England
    Active Corporate (4 parents)
    Equity (Company account)
    88 GBP2024-03-31
    Officer
    2021-12-22 ~ now
    IIF 3 - Director → ME
    Person with significant control
    2024-11-25 ~ now
    IIF 23 - Ownership of voting rights - 75% or more OE
    IIF 23 - Ownership of shares – 75% or more OE
    IIF 23 - Right to appoint or remove directors OE
  • 14
    SYNTHESYS DEFENCE LIMITED
    - now 11348472
    SYNTHESYS SYSTEMS DEFENCE LIMITED
    - 2018-05-16 11348472 02204802
    Dalmar House Barras Lane Estate, Dalston, Carlisle, United Kingdom
    Active Corporate (7 parents)
    Equity (Company account)
    236,963 GBP2024-12-31
    Officer
    2024-04-08 ~ 2025-03-05
    IIF 10 - Director → ME
    2018-05-08 ~ 2024-03-05
    IIF 11 - Director → ME
  • 15
    SYNTHESYS DEFENCE SYSTEMS (SDS) LIMITED - now
    SYNTHESYS SYSTEMS ENGINEERS LIMITED
    - 2025-03-05 02204802 11280633
    ESTAGOLD COMPUTERS LIMITED
    - 1988-04-06 02204802
    Dalmar House Barras Lane Estate, Dalston, Carlisle, United Kingdom
    Active Corporate (11 parents, 9 offsprings)
    Equity (Company account)
    -323,615 GBP2024-12-31
    Officer
    ~ 2025-03-05
    IIF 16 - Director → ME
    Person with significant control
    2016-04-06 ~ 2024-11-22
    IIF 22 - Ownership of shares – 75% or more OE
  • 16
    SYNTHESYS DIRECT LIMITED
    - now 09604572
    RESOLUTION UAV SERVICES LIMITED
    - 2017-02-08 09604572
    62/63 Westborough, Scarborough, North Yorkshire, United Kingdom
    Dissolved Corporate (4 parents)
    Equity (Company account)
    5,269 GBP2020-03-31
    Officer
    2015-05-22 ~ dissolved
    IIF 13 - Director → ME
  • 17
    SYNTHESYS SOFTWARE LIMITED
    10668323
    5&6 Manor Court Manor Garth, Scarborough, North Yorkshire, England
    Dissolved Corporate (3 parents)
    Equity (Company account)
    2,023 GBP2021-03-31
    Officer
    2017-03-14 ~ dissolved
    IIF 12 - Director → ME
  • 18
    SYNTHESYS TECHNOLOGIES LIMITED
    - now 11280633
    SYNTHESYS SYSTEMS ENGINEERING LIMITED
    - 2019-07-27 11280633 02204802
    Ground Floor, Baird House, Seebeck Place, Knowlhill, Milton Keynes
    Liquidation Corporate (3 parents)
    Officer
    2018-03-28 ~ now
    IIF 4 - Director → ME

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Contains public sector information retrieved at 9 February 2026 and licensed under the Open Government Licence v3.0.