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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 Stirling Hayes

Mark Stirling Hayes is a director of 9 companies. Source: Companies House records.

Director at SEP Vantage Limited · Director at SEP Renewables Limited

  • 9 current roles
  • 1 previous role
  • Served alongside 14 people
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Official record Companies House · updated 11th October 2026

Roles

10 roles across 10 organisations (9 current, 1 previous)

Current roles (9)

Previous roles (1)

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

People Mark has served alongside

14 people across 9 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.

SEP (Site Engineering Personnel) Limited 7 people · 2001-present

Survey & Engineering Projects Limited 5 people · 2016-present

SEP Geophysical Limited 4 people · 2022-present

SEP Hydrographic Limited 4 people · 2020-present

Survey & Engineering Programs Limited 3 people · 2019-present

SEP Inspection Limited 2 people · 2022-present

Survey Management Limited 1 person · 2019-present

SEP Survey Limited 1 person · 2020-present

SEP Vantage Limited 1 person · 2026-present

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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