Diamond Green Energy Limited

Reference number: 744468

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Authorised by the FCA

This firm is on the FCA register and authorised to carry out regulated activities.

Website, phone number and address

Compare these against whatever you were given. Scammers clone real firm names and reference numbers but use their own phone number and website, so a detail that does not match the register is the clearest warning sign there is.

In the full report: 3 background checks, 1 thing worth a closer look

  • When diamondgreen.energy first appeared online, and whether it can receive email
  • What kind of line 07989 453612 is
  • Who else gives the postcode PO14 1TP
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Other names (2)

If you were contacted under any of these names, it is this firm.

  • Diamond Heating & Cooling Trading name
  • Diamond Gas and Heating Limited Former name

FCA permissions and consumer protection

  • Lend or arrange credit No FSCS cover
    Consumer credit is not covered by the FSCS, so there is no compensation scheme if the firm fails.
  • Complaints Ombudsman, free
    You can refer a complaint about this firm to the Financial Ombudsman Service for free, whichever activity it relates to.
Show FCA detail (1 permission)
  • Credit Broking

FCA disciplinary action and complaints

No FCA disciplinary action.

The Financial Ombudsman Service only publishes complaint figures for firms with 30 or more new complaints in six months, so there are none here for this firm.

Companies House record

The company behind the firm: its status, age, registered office and directors.

Company number
07512244
Company status
Active
Company type
Private limited company
Incorporated
1 February 2011 (15 years old)
Registered office
Unit 4 Apex Centre, Speedfields Park, Fareham, Hampshire, PO14 1TP, England
Nature of business
  • Plumbing, heat and air-conditioning installation (SIC 43220)

Directors and company secretaries

Name Role Born Appointed Other companies
Louise Rosemary Simm Director Feb 1973 1 Feb 2011 1 other company
Ian John Simm Director Apr 1974 1 Sep 2018 7 other companies

Other companies run by these 2 directors

A firm is run by people, and their other companies are their track record: what they built, what closed, and anything that failed. It is the check most people never think to make.

other companies
7
closed down
3
run together
1

In the full report: all 7 companies, named

  • What each company does, and whether it is still trading
  • Which of these 2 directors sit on each board, and since when
  • Any that went into liquidation or administration
  • The 1 company these 2 directors run together
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Filed accounts and finances

16 months to 30 June 2026Abridged accountsNot audited

Net assets

£116k

Up £123k from −£6,618

Cash at bank

£79.3k

+146% from £32.2k

Employees (average)

17

Same as 17

Owed within a year

£788k

+32% from £595k

Assets and liabilities

In the full report: all 7 years of accounts

  • Every year from 2020 to 2026
  • The chart, over every year
  • Every filed figure, year by year
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About these figures
Turnover
Money taken from sales in the year, before any costs.
Profit before tax
What was left after the year’s costs, before corporation tax. A minus figure is a loss.
Net assets, or total equity
Everything the company owns minus everything it owes. A minus figure means it owes more than it owns.
Total assets and total liabilities
Everything the company owns, and everything it owes, on the last day of the year. The gap between them is its net assets.
Cash at bank
Money in the company’s accounts on the last day of the year.
Owed within a year, owed after a year
Debts and bills due in the next twelve months, and those due later.

There is no turnover or profit: small companies do not have to publish them.

Accounts filed at Companies House for company 07512244. Every figure is as filed, apart from total assets and total liabilities, which are added up from filed figures. Nothing is estimated.

Key dates in its history

Diamond Green Energy’s history from the FCA register and Companies House, newest first.

Key events (6) All events (12)

2023

18 September 2023

  • Changed its registered name from "Diamond Gas and Heating Limited"

FCA register

2018

17 August 2018

  • Ian John Simm became a part-owner (25–50% of shares)

Companies House

2016

5 October 2016

  • Regulated by the FCA from this date
  • Became authorised by the FCA

FCA register

1 July 2016

  • Louise Rosemary Simm became a part-owner (25–50% of shares)

Companies House

2011

1 February 2011

  • Incorporated at Companies House

Companies House

In the full report: all 12 events

  • All 12 events in its history (6 shown here)
  • Every director appointment and resignation: 2
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Firms like Diamond Green Energy

Other firms of the same type (home improvement or trades), nearest first.

In Fareham

Ideal Window Solutions LimitedFarehamAuthorisedCore Home Energy LtdFarehamAppointed representativeEE Renewables LimitedFarehamAppointed representativeHelio Energy LimitedFarehamNo longer authorised

Firms are listed by type and location, best known first. Being listed is not a recommendation: check any firm before you deal with it.

Get the full report on Diamond Green Energy

Everything on this page, plus everything locked above, in one dated PDF you can keep, file or send on.

  • 7 other companies its directors have run, named
  • 3 background checks on its contact details, 1 flagged
  • 7 years of accounts, charted
  • All 12 events in its history

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Frequently asked questions about this firm

Is Diamond Green Energy Limited FCA authorised?
Yes, Diamond Green Energy Limited (FRN 744468) is authorised by the FCA to carry out regulated activities. It has held its current authorisation since October 2016 and works as a home improvement or trades. The FCA has placed no limits on its permissions.
What is Diamond Green Energy’s phone number and website?
The FCA register lists the phone number 07989 453612 and the website diamondgreen.energy for Diamond Green Energy. If you were given different contact details, use these to check with the firm before going any further.
Is Diamond Green Energy a scam or clone?
Diamond Green Energy is a genuine FCA-listed firm, and the FCA has published no warnings about fake versions of it. Scammers do copy real firms, though, so check that any contact details you were given match the ones on the register.
Is my money safe with Diamond Green Energy?
Its FCA permissions do not allow it to hold or control client money. Protection depends on which product you hold and how Diamond Green Energy handles your money, so check the specific product before you commit. You can also refer complaints about Diamond Green Energy to the Financial Ombudsman Service, free of charge.
Who owns Diamond Green Energy?
Companies House lists 2 people with significant control of Diamond Green Energy: Mrs Louise Rosemary Simm (25–50% of shares) and Mr Ian John Simm (25–50% of shares).
Who runs Diamond Green Energy?
Companies House lists 2 directors of Diamond Green Energy: Louise Rosemary Simm and Ian John Simm.
How long has Diamond Green Energy been in business?
The company was formed on 1 February 2011, and has held its current FCA authorisation since October 2016.
What do Diamond Green Energy’s latest accounts show?
Its latest accounts, to 30 June 2026, show net assets of £116k (up £123k from −£6,618) and cash at bank of £79.3k (+146% from £32.2k).
Does Diamond Green Energy use any other names?
It trades as Diamond Heating & Cooling. It has previously used the name Diamond Gas and Heating Limited.

Sources and links

The full report on Diamond Green Energy Limited

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