The Governance RegisterEdition 2026 · Compiled 12th July 2026

Diamond Underwriting Limited

Company 06776136 Active

Connected board network

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Board DNA

How this board is put together, from the Companies House officer record and Charity Commission trustee records - deterministic, no AI.

3
directors on the board
12.8y median 14.3y
average tenure
17.6y
longest tenure
3
directors past 6 years
0 vs 2 portfolio
first-time directors
0
also govern a charity
0
left in the last 12 months

Where else this board sits

Finance 3Professional services 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.

Related organisations

Companies whose board overlaps with this one through the same people. Deterministic, from public records.

Company details

Number06776136
StatusActive
TypePrivate Limited Company
Incorporated18/12/2008
AddressFLAT 33, 8 WHISTLER SQUARE, LONDON, SW1W 8BW
Accounts next due30/09/2026
Accounts last made up31/12/2024

Industry (SIC)

65120 - Non-life insurance

Ownership - persons with significant control (1)

  • Mr Nigel Harold John Rogers British
    ownership of shares 75-100%

Officers (6)

  • Tuvnes, Sonja Gail Wilhelmina Director · appointed 2019
  • Rogers, Shirley Lorna Lucy Director · appointed 2012
  • Rogers, Nigel Harold John Director · appointed 2008
  • Polo Commercial Insurance Services Former Corporate-secretary · appointed 2020 · resigned 2025
  • Katzenberg, Roy Former Director · appointed 2012 · resigned 2019
  • Gately, Dinah Janine Former Director · appointed 2012 · resigned 2024

Directors and officers on the Companies House record, current and former.

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