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Company · Cookstown

Keystone Lintels Limited

Manufacture of metal structures and parts of structures

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

Network

The large node is Keystone Lintels Limited. Red nodes are organisations, white nodes are people. Sign in free to explore further.

Who leads it

Previous officers 6

  1. Andrew Neal 2013-2020 Director View profile
  2. Margaret Bernadette Coary 2013-2020 Director View profile
  3. Gerard Austin O'Callaghan 2010-2015 Director View profile
  4. Darren Adrian Muzzlewhite 2004-2009 Director View profile
  5. William Arthur Dowell 2003-2009 Director View profile
  6. Sean Plunkett Coyle 1988-2020 Secretary View profile

Directors and secretaries as filed at Companies House.

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About

What it does
Manufacture of metal structures and parts of structures
Incorporated
03/10/1988
Registered office
Cookstown

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. Keystone Lintels Limited is controlled by Sean Plunkett Coyle
    Evidence
    ceased 75-100% shares · notified 2016-12-01, ceased 2023-01-01 · source: Companies House PSC register

Ultimately controlled by Sean Plunkett Coyle.

17 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.

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.

5 directors on the board

18.3y median 22.4y
average tenure
25.2y
longest tenure

Directors past 6 years

First-time vs portfolio directors

Portfolio (5)

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.

Professional services 18Dormant 17Manufacturing 12Retail and trade 5Finance 3Property 3Business services 2Other 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.

Sources

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

Record details
Company number
NI021988
Status
Active
Type
Private Limited Company
Accounts next due
30/09/2027
Edition
Register edition compiled 27th September 2026
Labels
Official record from Companies House · Calculated derived by Governance Register.

Contains public sector information licensed under the Open Government Licence v3.0. Report an issue · How we handle data