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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.

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 director born in February 1958

    Resident in United Kingdom

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

      IIF 1
    • icon of address 5&6 Manor Court, Manor Garth, Scarborough, North Yorkshire, YO11 3TU, England

      IIF 2 IIF 3 IIF 4
    • icon of address 5&6, Manor Court, Manor Garth, Scarborough, North Yorkshire, YO11 3TU, United Kingdom

      IIF 7
    • icon of address 62/63, Westborough, Scarborough, North Yorkshire, YO11 1TS, United Kingdom

      IIF 8 IIF 9
    • icon of address 16 Elm Grove, Whitby, North Yorkshire, YO21 1JA, England

      IIF 10
  • Hartas, John Stephen, Dr
    British managing director born in February 1958

    Resident in United Kingdom

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

      IIF 11
    • icon of address 5&6 Manor Court, Manor Garth, Scarborough, North Yorkshire, YO11 3TU, England

      IIF 12 IIF 13 IIF 14
    • icon of address 62/63 Westborough, Scarborough, North Yorkshire, YO11 1TS, England

      IIF 18
    • icon of address 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
    • icon of address 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
Active 16
  • 1
    icon of address 5&6 Manor Court Manor Garth, Scarborough, North Yorkshire, England
    Active Corporate (2 parents)
    Equity (Company account)
    10,791 GBP2024-03-31
    Officer
    icon of calendar 2007-03-01 ~ now
    IIF 4 - Director → ME
    Person with significant control
    icon of calendar 2020-07-15 ~ now
    IIF 25 - Right to appoint or remove directorsOE
    IIF 25 - Ownership of voting rights - More than 50% but less than 75%OE
    IIF 25 - Ownership of shares – More than 50% but less than 75%OE
  • 2
    icon of address 5&6 Manor Court Manor Garth, Scarborough, North Yorkshire, United Kingdom
    Active Corporate (2 parents)
    Equity (Company account)
    5,222 GBP2024-05-31
    Officer
    icon of calendar 2023-05-08 ~ now
    IIF 15 - Director → ME
  • 3
    icon of address Unit F16 The Ropery, Whitby, England
    Active Corporate (3 parents)
    Officer
    icon of calendar 2024-02-09 ~ now
    IIF 19 - Director → ME
  • 4
    icon of address 30 Finsbury Square, London
    Dissolved Corporate (75 parents)
    Officer
    icon of calendar 2012-10-23 ~ dissolved
    IIF 21 - LLP Member → ME
  • 5
    icon of address 5&6 Manor Court, Manor Garth, Scarborough, North Yorkshire, United Kingdom
    Active Corporate (3 parents)
    Officer
    icon of calendar 2024-01-30 ~ now
    IIF 7 - Director → ME
  • 6
    icon of address 5&6 Manor Court Manor Garth, Scarborough, North Yorkshire, England
    Active Corporate (2 parents)
    Equity (Company account)
    -1,596 GBP2024-03-31
    Officer
    icon of calendar 2019-08-14 ~ now
    IIF 16 - Director → ME
    Person with significant control
    icon of calendar 2019-08-14 ~ now
    IIF 24 - Ownership of voting rights - More than 25% but not more than 50%OE
    IIF 24 - Ownership of shares – More than 25% but not more than 50%OE
  • 7
    icon of address 5&6 Manor Court Manor Garth, Scarborough, North Yorkshire, England
    Active Corporate (1 parent, 1 offspring)
    Equity (Company account)
    90,133 GBP2024-03-31
    Officer
    icon of calendar 2013-08-23 ~ now
    IIF 2 - Director → ME
    Person with significant control
    icon of calendar 2016-04-06 ~ now
    IIF 27 - Ownership of voting rights - 75% or moreOE
    IIF 27 - Ownership of shares – 75% or moreOE
  • 8
    icon of address 16 Elm Grove, Whitby, England
    Dissolved Corporate (2 parents)
    Equity (Company account)
    -85 GBP2022-03-31
    Officer
    icon of calendar 2021-11-26 ~ dissolved
    IIF 10 - Director → ME
    Person with significant control
    icon of calendar 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
    SYNTHESYS RESEARCH LIMITED - 2023-12-20
    icon of address 5&6 Manor Court Manor Garth, Scarborough, North Yorkshire, England
    Active Corporate (2 parents)
    Equity (Company account)
    -12,495 GBP2024-03-31
    Officer
    icon of calendar 2021-03-10 ~ now
    IIF 17 - Director → ME
    Person with significant control
    icon of calendar 2024-06-25 ~ now
    IIF 26 - Ownership of shares – More than 50% but less than 75%OE
    IIF 26 - Ownership of voting rights - More than 50% but less than 75%OE
    IIF 26 - Right to appoint or remove directorsOE
  • 10
    icon of address 5&6 Manor Court Manor Garth, Scarborough, North Yorkshire, England
    Active Corporate (2 parents)
    Equity (Company account)
    29,500 GBP2024-03-31
    Officer
    icon of calendar 2024-07-25 ~ now
    IIF 14 - Director → ME
    Person with significant control
    icon of calendar 2024-11-25 ~ now
    IIF 29 - Ownership of voting rights - 75% or moreOE
    IIF 29 - Ownership of shares – 75% or moreOE
  • 11
    icon of address Unit F16 The Ropery, Whitby, England
    Dissolved Corporate (2 parents)
    Officer
    icon of calendar 2022-07-14 ~ dissolved
    IIF 20 - Director → ME
  • 12
    icon of address 62/63 Westborough, Scarborough, North Yorkshire, United Kingdom
    Dissolved Corporate (4 parents)
    Equity (Company account)
    100 GBP2019-05-31
    Officer
    icon of calendar 2018-05-22 ~ dissolved
    IIF 9 - Director → ME
  • 13
    icon of address 5&6 Manor Court Manor Garth, Scarborough, North Yorkshire, England
    Active Corporate (2 parents)
    Equity (Company account)
    88 GBP2024-03-31
    Officer
    icon of calendar 2021-12-22 ~ now
    IIF 13 - Director → ME
    Person with significant control
    icon of calendar 2024-11-25 ~ now
    IIF 23 - Ownership of voting rights - 75% or moreOE
    IIF 23 - Right to appoint or remove directorsOE
    IIF 23 - Ownership of shares – 75% or moreOE
  • 14
    RESOLUTION UAV SERVICES LIMITED - 2017-02-08
    icon of address 62/63 Westborough, Scarborough, North Yorkshire, United Kingdom
    Dissolved Corporate (2 parents)
    Equity (Company account)
    5,269 GBP2020-03-31
    Officer
    icon of calendar 2015-05-22 ~ dissolved
    IIF 8 - Director → ME
  • 15
    icon of address 5&6 Manor Court Manor Garth, Scarborough, North Yorkshire, England
    Dissolved Corporate (2 parents)
    Equity (Company account)
    2,023 GBP2021-03-31
    Officer
    icon of calendar 2017-03-14 ~ dissolved
    IIF 6 - Director → ME
  • 16
    SYNTHESYS SYSTEMS ENGINEERING LIMITED - 2019-07-27
    icon of address Ground Floor, Baird House, Seebeck Place, Knowlhill, Milton Keynes
    Liquidation Corporate (3 parents)
    Officer
    icon of calendar 2018-03-28 ~ now
    IIF 5 - Director → ME
Ceased 4
  • 1
    icon of address 5&6 Manor Court Manor Garth, Scarborough, North Yorkshire, United Kingdom
    Active Corporate (2 parents)
    Equity (Company account)
    5,222 GBP2024-05-31
    Person with significant control
    icon of calendar 2024-11-25 ~ 2025-05-01
    IIF 28 - Ownership of voting rights - 75% or more OE
    IIF 28 - Ownership of shares – 75% or more OE
    IIF 28 - Right to appoint or remove directors OE
  • 2
    icon of address 5&6 Manor Court Manor Garth, Scarborough, North Yorkshire, England
    Active Corporate (2 parents)
    Equity (Company account)
    29,500 GBP2024-03-31
    Officer
    icon of calendar 2023-12-15 ~ 2024-05-24
    IIF 12 - Director → ME
    icon of calendar 2021-03-19 ~ 2021-05-01
    IIF 18 - Director → ME
  • 3
    SYNTHESYS SYSTEMS DEFENCE LIMITED - 2018-05-16
    icon of address Dalmar House Barras Lane Estate, Dalston, Carlisle, United Kingdom
    Active Corporate (3 parents)
    Equity (Company account)
    236,963 GBP2024-12-31
    Officer
    icon of calendar 2024-04-08 ~ 2025-03-05
    IIF 1 - Director → ME
    icon of calendar 2018-05-08 ~ 2024-03-05
    IIF 3 - Director → ME
  • 4
    SYNTHESYS SYSTEMS ENGINEERS LIMITED - 2025-03-05
    ESTAGOLD COMPUTERS LIMITED - 1988-04-06
    icon of address Dalmar House Barras Lane Estate, Dalston, Carlisle, United Kingdom
    Active Corporate (3 parents, 5 offsprings)
    Equity (Company account)
    -323,615 GBP2024-12-31
    Officer
    icon of calendar ~ 2025-03-05
    IIF 11 - Director → ME
    Person with significant control
    icon of calendar 2016-04-06 ~ 2024-11-22
    IIF 22 - Ownership of shares – 75% or more OE

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Contains public sector information retrieved at 26 August 2025 and licensed under the Open Government Licence v3.0.