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The red node is William. 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

William Gillis

William Gillis is a trustee of British GAS Energy Trust (since 2019) and Centre for Sustainable Energy (since 2018) and a director of 1 company. Source: Charity Commission and Companies House records.

Trustee at British GAS Energy Trust · Trustee at Centre for Sustainable Energy

  • 3 current roles
  • 8 previous roles
  • Served alongside 94 people
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Official record Charity Commission and Companies House · updated 25th October 2026

Roles

11 roles across 11 organisations (3 current, 8 previous)

Current roles (3)

Previous roles (8)

Charity trustee roles come from the current Charity Commission register, which lists serving trustees only. Company roles, current and past, come from Companies House.

People William has served alongside

94 people across 6 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.

Centre for Sustainable Energy 27 people · 1992-present

Centre for Sustainable Energy 10 people · 2018-present

British GAS Energy Trust 8 people · 2019-present

Energy Action Scotland 50 people · 1990-2007

Neighbourhood Energy Action Limited 5 people · 1995-2008

NEA Limited 5 people · 1999-2008

People marked “Likely the same person” are reached through a record that is a likely relationship to William: there is sufficient evidence to suggest it concerns the same individual, but it is not established as confirmed.

Sources

Charity Commission
Register of Charities: current trustees and appointment dates.
Companies House
Officer appointments and resignations.
Edition
Register edition compiled 25th 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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