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Surge Protection Devices Limited

Surge Protection Devices Limited is an active UK company (number 05920962), incorporated 2006, with 3 current directors including Daniel Diandian Sun Zhang and David Richard Barton. Source: Companies House, updated 11th October 2026.

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Official record Companies House · updated 11th October 2026 · Sources · Free, no card or password

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Who leads it

Previous officers 10

  1. Kenth Patrick Mattias Olsson 2025-2026 Director View profile
  2. Mikael Rockhammar 2023-2026 Director View profile
  3. Johan Steene 2023-2025 Director View profile
  4. Kirsty Johnson 2019-2024 Director View profile
  5. Michelle Clayton 2006-2006 Director View profile
  6. Sandra Johnson 2006-2014 Director View profile
  7. Duncan Booth 2025-2025 Secretary View profile
  8. Wendy Johnson 2019-2024 Secretary View profile
  9. Ian Johnson 2008-2024 Secretary View profile
  10. Helen Claire Johnson 2007-2008 Secretary View profile

Directors and secretaries as filed at Companies House.

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About

Incorporated
31/08/2006

Ownership

Owned by (1) 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.

  • Ian Johnson ceased 2023-11-10
    75-100% shares · notified 2016-06-01 - confirmed: also a director of this company

Group

  1. Surge Protection Devices Limited is controlled by Ian Johnson
    Evidence
    ceased 75-100% shares · notified 2016-06-01, ceased 2023-11-10 · source: Companies House PSC register

Ultimately controlled by Ian Johnson.

2 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
£3,371,946
Total assets
£3,373,860
Cash
£1,644,222
Employees
0.1
Turnover
Not reported (small or micro-entity accounts)
Profit/loss
£1,730,326

Filed as Full accounts.

Five-year trend

Period endingTurnoverNet assets
2025-12-31Not reported£3,371,946
2025-12-31Not reported£3,371,946

Figures from accounts filed at Companies House (iXBRL), period ending 2025-12-31. 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

1.3y median 1.2y
average tenure
1.7y
longest tenure
0
directors past 6 years

First-time vs portfolio directors

First-time (1)

Portfolio (2)

0
also govern a charity

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.

Manufacturing 15Finance 2Property 2Retail and trade 2Business services 1Dormant 1Health and social care 1Hospitality 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.

Sources

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

Record details
Company number
05920962
Status
Active
Type
Private Limited Company
Edition
Register edition compiled 11th October 2026
Labels
Official record from Companies House · Calculated derived by Governance Register.

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