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The red node is Mark. 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

Mark Bernard Haestier

Mark Bernard Haestier was previously a director of GTT Training Limited (until 2021) and 1 other organisation. Source: Companies House records.

Director at GTT Training Limited · Director at Engie Supply Holding UK Limited

  • 0 current roles
  • 2 previous roles
  • Served alongside 19 people
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Official record Companies House · updated 11th October 2026

Roles

2 roles across 2 organisations (0 current, 2 previous)

Previous roles (2)

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

People Mark has served alongside

19 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.

GTT Training Limited 3 people · 2018-present

Engie Supply Holding UK Limited 16 people · 2004-2007

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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