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The red node is Hayley. 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

Hayley Sieff

Hayley Sieff is a trustee of The Weizmann Institute Foundation (since 2015) and a director of 1 company. Source: Charity Commission and Companies House records.

Trustee at The Weizmann Institute Foundation · Director at The Weizmann Institute Foundation

  • 2 current roles
  • 3 previous roles
  • Served alongside 42 people
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Official record Charity Commission and Companies House · updated 18th October 2026

Roles

5 roles across 5 organisations (2 current, 3 previous)

Current roles (2)

Previous roles (3)

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 Hayley has served alongside

42 people across 2 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.

The Weizmann Institute Foundation 40 people · 1991-present

The Weizmann Institute Foundation 11 people · 2015-present

People marked “Likely the same person” are reached through a record that is a likely relationship to Hayley: 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 18th 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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