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Company · Fareham

Caldera Heat Batteries Limited

Manufacture of batteries and accumulators

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

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The large node is Caldera Heat Batteries Limited. Red nodes are organisations, white nodes are people. Sign in free to explore further.

Who leads it

Previous officers 1

  1. Ilija Aprcovic 2025-2025 Director View profile

Directors and secretaries as filed at Companies House.

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About

What it does
Manufacture of batteries and accumulators; Electrical installation; Engineering design activities for industrial process and production; Other research and experimental development on natural sciences and engineering
Incorporated
18/10/2017
Registered office
Fareham
Previous names
Pumped Heat Limited (until 15/07/2020)

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.

Group

  1. Caldera Heat Batteries Limited is controlled by James Donnelly Macnaghten
    Evidence
    active 25-50% shares, 25-50% voting · notified 2017-10-18 · source: Companies House PSC register

Ultimately controlled by James Donnelly Macnaghten.

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
£2,173,528
Total assets
£2,327,051
Cash
£1,104,609
Employees
22
Turnover
Not reported (small or micro-entity accounts)

Five-year trend

Period endingTurnoverNet assets
2025-12-31Not reported£2,173,528
2025-12-31Not reported£2,173,528

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.

Grants received

4 grants · £560,525 total

360Giving data, published by funders. Coverage only includes funders who publish their grants to 360Giving, so these figures are a floor, not a complete picture.

Top funders

  • Department for Business, Energy and Industrial Strategy · £560,525 (4 grants)

Most recent

  • Department for Business, Energy and Industrial Strategy £142,5102021-08-29
  • Department for Business, Energy and Industrial Strategy £292,4732021-08-29
  • Department for Business, Energy and Industrial Strategy £50,7022020-11-01
  • Department for Business, Energy and Industrial Strategy £74,8412020-06-01
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.

6 directors on the board

5.3y median 6.4y
average tenure
8.7y
longest tenure

Directors past 6 years

First-time vs portfolio directors

First-time (2)

Portfolio (4)

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.

Tech and media 10Construction 2Other services 2Professional services 2Finance 1Transport 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
11020413
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