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Company · Hampshire

Deep SEA Seals Trustees Limited

Other professional, scientific and technical activities n.e.c.

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Official record Companies House · updated 27th September 2026 · Sources

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The large node is Deep SEA Seals Trustees Limited. Red nodes are organisations, white nodes are people. Sign in free to explore further.

Who leads it

Previous officers 9

  1. Sami Martti Artturi Somerkallio 2020-2024 Director View profile
  2. Robert Brian Burford 2015-2019 Director View profile
  3. Anu Hilja Irmeli Hamalainen 2015-2020 Director View profile
  4. Markus Tapid Pietikainen 2010-2014 Director View profile
  5. Penelope Elisabeth Louise Salter 2008-2012 Director View profile
  6. Graham Leslie Excell 2007-2008 Director View profile
  7. Heikki Tapio Horstia 2003-2010 Director View profile
  8. Mark Hamish Longdin 2002-2002 Director View profile
  9. Walter Albert Tavener 2002-2007 Director View profile

Directors and secretaries as filed at Companies House.

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About

What it does
Other professional, scientific and technical activities n.e.c.
Incorporated
24/09/2002
Registered office
Hampshire

Ownership

Owned by (2) iOwned byIndividuals and companies registered as having significant control over this company, from the Companies House PSC (persons with significant control) register. People whose ownership could not be confirmed to one individual are not listed as confirmed owners.

Group

  1. Deep SEA Seals Trustees Limited is controlled by Wartsila UK Limited
    Evidence
    active 75-100% shares · notified 2016-04-06 · source: Companies House PSC register
  2. Wartsila UK Limited is controlled by Andrew David Dickinson
    Evidence
    ceased significant influence · notified 2016-04-06, ceased 2020-09-01 · source: Companies House PSC register

Ultimately controlled by Andrew David Dickinson.

4 other companies in this group

Ownership paths are calculated from Companies House persons-with-significant-control filings. Each step shows the filed nature of control and dates; a step marked "ceased" is historical, not current.

Financials

Net assets
£2
Turnover
Not reported (small or micro-entity accounts)

Figures from accounts filed at Companies House (iXBRL), period ending 2025-04-05. Where turnover is absent, small and micro-entity accounts are not required to report it, so it is not shown as zero.

Board analysis

Board DNA

How this board is put together, from the Companies House officer record and Charity Commission trustee records - deterministic, no AI.iBoard compositionCounted from the dated Companies House officer record: the current directors only, past directors excluded.

3 directors on the board

8.9y median 7.1y
average tenure
18.2y
longest tenure

Directors past 6 years

First-time vs portfolio directors

First-time (1)

Portfolio (2)

0
also govern a charity
0
left in the last 12 months

Where else this board sits iWhere else this board sitsThe charitable fields these directors govern in elsewhere, by Charity Commission classification. Excludes this company and any charity it is the legal face of.

Business services 1Manufacturing 1

The sectors these directors govern in elsewhere. This company, and any charity it is the legal face of, are excluded - counting them would just tell you what you are already looking at.

Gaps to watch

  • Several long-serving directors could step down together

Where to look Suggested search: succession planning for long-tenured seats.

Sources

Official record from Companies House. Governance Register calculates the connections.

Record details
Company number
04544217
Status
Active
Type
Private Limited Company
Accounts next due
05/01/2027
Edition
Register edition compiled 27th September 2026
Labels
Official record from Companies House · Calculated derived by Governance Register.

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