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The red node is Mary. Pale nodes are charities, grey nodes are companies, and darker grey nodes are the people who sit on them. Dashed links are historical or inferred. Click any node to explore.

Person

Mary Siobhan Clarke

Mary Siobhan Clarke is a director of 4 companies. Source: Companies House records.

Director at Qubis Limited · Director at Supercritical Solutions LTD

  • 4 current roles
  • 5 previous roles
  • Served alongside 55 people
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Official record Companies House · updated 11th October 2026

Roles

9 roles across 9 organisations (4 current, 5 previous)

Current roles (4)

  • Qubis Limited
    Director · 2025-present
    Official record · Companies House
    Source
    Companies House
    Organisation
    Qubis Limited
    Role
    Director
    Appointed
    2025-11-01
    Record reference
    Company NI017859
    Current
  • Supercritical Solutions LTD
    Director · 2025-present
    Official record · Companies House
    Source
    Companies House
    Organisation
    Supercritical Solutions LTD
    Role
    Director
    Appointed
    2025-07-16
    Record reference
    Company 12702979
    Current
  • Stfc Innovations Limited
    Director · 2023-present
    Official record · Companies House
    Source
    Companies House
    Organisation
    Stfc Innovations Limited
    Role
    Director
    Appointed
    2023-07-01
    Record reference
    Company 04361684
    Current
  • Particle Leap LTD
    Director · 2018-present
    Official record · Companies House
    Source
    Companies House
    Organisation
    Particle Leap LTD
    Role
    Director
    Appointed
    2018-07-19
    Record reference
    Company 11473253
    Current

Previous roles (5)

  • Streamba LTD
    Director · 2024-2026
    Official record · Companies House
    Source
    Companies House
    Organisation
    Streamba LTD
    Role
    Director
    Appointed
    2024-05-15
    Ended
    2026-06-26
    Record reference
    Company SC389674
    Previous
  • Lytt Limited
    Director · 2022-2023
    Official record · Companies House
    Source
    Companies House
    Organisation
    Lytt Limited
    Role
    Director
    Appointed
    2022-01-27
    Ended
    2023-09-13
    Record reference
    Company 11722079
    Previous
  • Insight Analytics Solutions Holdings Limited
    Director · 2020-2021
    Official record · Companies House
    Source
    Companies House
    Organisation
    Insight Analytics Solutions Holdings Limited
    Role
    Director
    Appointed
    2020-09-10
    Ended
    2021-04-15
    Record reference
    Company 10510632
    Previous
  • Stryde Limited
    Director · 2020-2023
    Official record · Companies House
    Source
    Companies House
    Organisation
    Stryde Limited
    Role
    Director
    Appointed
    2020-04-20
    Ended
    2023-09-15
    Record reference
    Company 12136455
    Previous
  • LOW Carbon Friends Limited
    Director · 2020-2023
    Official record · Companies House
    Source
    Companies House
    Organisation
    LOW Carbon Friends Limited
    Role
    Director
    Appointed
    2020-02-10
    Ended
    2023-09-13
    Record reference
    Company 12453523
    Previous

Company roles, current and past, as filed at Companies House.

People Mary has served alongside

55 people across 8 organisations

Based on overlapping official board records. Calculated from official records It does not mean they know each other. Only formal co-service is listed: people are never joined on a matching name alone.

Qubis Limited 15 people · 2025-present

Streamba LTD 8 people · 2024-present

Stfc Innovations Limited 7 people · 2023-present

Stryde Limited 6 people · 2020-2023 · current

Supercritical Solutions LTD 4 people · 2025-present

Insight Analytics Solutions Holdings Limited 7 people · 2020-2021

11722079 5 people · 2022-2023

12453523 4 people · 2020-2023

Sources

Companies House
Officer appointments and resignations.
Edition
Register edition compiled 11th October 2026
Identity
Records are treated as the same person only where our identity-matching rules support it. Confirmed relationships are supported by the approved identity-matching evidence and rules. Likely relationships are supported by sufficient evidence to suggest the records concern the same individual, but are not established as confirmed; they are shown with the label “Likely the same person”. How people are matched

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