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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

Clarke, Mary Siobhan

    Related profiles found in government register
  • Clarke, Mary Siobhan
    British company director born in September 1977

    Resident in England

    Registered addresses and corresponding companies

    • icon of address Beco Building, 58 Kingston Street, Glasgow, G5 8BP, Scotland

      IIF 1

    • icon of address Flat 3 Tapley House, Wolseley Street, London, SE1 2BW, United Kingdom

      IIF 2
  • Clarke, Mary Siobhan
    British oil company executive born in September 1977

    Resident in England

    Registered addresses and corresponding companies

    • icon of address 1, More London Place, London, SE1 2AF

      IIF 3

    • icon of address Chertsey Road, Sunbury On Thames, Middlesex, TW16 7BP, United Kingdom

      IIF 4
  • Clarke, Mary Siobhan
    British managing director born in September 1977

    Resident in United Kingdom

    Registered addresses and corresponding companies

    • icon of address Flat 3, Tapley House, Wolseley Street, London, SE1 2BW, England

      IIF 5
  • Clarke, Mary Siobhan
    British oil company executive born in September 1977

    Resident in United Kingdom

    Registered addresses and corresponding companies

    • icon of address Chertsey Road, Sunbury On Thames, Middlesex, TW16 7BP, United Kingdom

      IIF 6 IIF 7 IIF 8

    • icon of address Sunbury Secretaries Limited, Chertsey Road, Sunbury On Thames, Middlesex, England

      IIF 9
  • Clarke, Mary Siobhan
    British venture capitalist born in September 1977

    Resident in United Kingdom

    Registered addresses and corresponding companies

    • icon of address Episode I Ventures, 4th Floor, 112-116 New Oxford Street, Fitzrovia, London, WC1A 1HH, United Kingdom

      IIF 10
  • Ms Mary Siobhan Clarke
    British born in September 1977

    Resident in United Kingdom

    Registered addresses and corresponding companies

    • icon of address Flat 3, Tapley House, Wolseley Street, London, SE1 2BW, England

      IIF 11
child relation
Offspring entities and appointments
Active 3
  • 1
    icon of address Flat 3, Tapley House, Wolseley Street, London, England
    Active Corporate (1 parent)
    Equity (Company account)
    Retained earnings (accumulated losses)
    5,967 GBP2024-07-31
    Officer
    icon of calendar 2018-07-19 ~ now
    IIF 5 - Director → ME
    Person with significant control
    icon of calendar 2018-07-19 ~ now
    IIF 11 - Right to appoint or remove directors → OE
    IIF 11 - Ownership of voting rights - 75% or more → OE
    IIF 11 - Ownership of shares – 75% or more → OE
  • 2
    MOSTLINE LIMITED - 2002-03-27
    CENTRAL LABORATORY INNOVATION AND KNOWLEDGE TRANSFER LIMITED - 2009-07-14
    icon of address R71 Rutherford Appleton Laboratory, Harwell Oxford, Didcot, Oxfordshire
    Active Corporate (7 parents, 5 offsprings)
    Officer
    icon of calendar 2023-07-01 ~ now
    IIF 2 - Director → ME
  • 3
    icon of address 28 Albyn Place, Aberdeen, United Kingdom
    Active Corporate (5 parents)
    Equity (Company account)
    Retained earnings (accumulated losses)
    -510,736 GBP2024-12-31
    Officer
    icon of calendar 2024-05-15 ~ now
    IIF 1 - Director → ME
Ceased 6
  • 1
    icon of address 14 Elfrida Crescent, London, England
    Dissolved Corporate (2 parents)
    Equity (Company account)
    Retained earnings (accumulated losses)
    -955,856 GBP2019-07-31
    Officer
    icon of calendar 2019-02-21 ~ 2019-12-01
    IIF 10 - Director → ME
  • 2
    FOTECH SENSING SOLUTIONS LIMITED - 2011-09-09
    icon of address 1 More London Place, London
    Liquidation Corporate (2 parents)
    Officer
    icon of calendar 2022-01-17 ~ 2023-04-29
    IIF 3 - Director → ME
    icon of calendar 2019-12-12 ~ 2020-09-17
    IIF 8 - Director → ME
  • 3
    icon of address 27 Old Gloucester Street, London, United Kingdom
    Active Corporate (5 parents, 1 offspring)
    Equity (Company account)
    Retained earnings (accumulated losses)
    0 GBP2023-12-31
    Officer
    icon of calendar 2020-09-10 ~ 2021-04-15
    IIF 9 - Director → ME
  • 4
    icon of address C/o Bdo Llp 5 Temple Square, Temple Street, Liverpool
    Dissolved Corporate (3 parents)
    Officer
    icon of calendar 2020-02-10 ~ 2023-09-13
    IIF 6 - Director → ME
  • 5
    BP DIAGNOSTIC ACOUSTIC SENSING LIMITED - 2019-08-02
    icon of address 1 More London Place, London
    Liquidation Corporate (2 parents)
    Officer
    icon of calendar 2022-01-27 ~ 2023-09-13
    IIF 4 - Director → ME
  • 6
    icon of address C/o Halkin, 1-2 Paris Garden, London, United Kingdom
    Active Corporate (8 parents, 1 offspring)
    Officer
    icon of calendar 2020-04-20 ~ 2023-09-15
    IIF 7 - Director → ME

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