Firmoscan
Active14515184Private limited companyFareham

DIAMOND HEATING & COOLING LIMITED

Significant control: Louise Rosemary Simm (50–75%), Ian John Simm (50–75%)

Companies HouseCompanies House

From public filings as at 31 Aug 2026; may contain errors or be out of date. Verify at Companies House · Terms

Watch this company

Get an email when Companies House records a change for Diamond Heating & Cooling Limited: status, filings, accounts, officers or owners. Free.

Not live yet: alerts start by 15 December 2026. We store your email and this company number only, for these alerts. If alerts don’t launch, we tell you and delete your address. Privacy

Coming soon · product and service lists

What does Diamond Heating & Cooling Limited sell?

Registered activity: Plumbing, heat and air-conditioning installation (SIC 43220). We’re building product and service lists for UK companies. Get this one when it’s ready.

One email, only about this. If we don’t launch within 60 days we’ll tell you. Privacy
01

Summary

Generated from filed data · no estimates

DIAMOND HEATING & COOLING LIMITED is an active private limited company (company number 14515184) incorporated on 30 November 2022, registered in Fareham. Its registered activity is plumbing, heat and air-conditioning installation (SIC 43220). Accounts are on file at Companies House (dormant) but not yet parsed into this record.

There are 573 companies in plumbing, heat and air-conditioning installation in Portsmouth with filed accounts; the median reports net assets of £4,669 and is 9 years old.

02

Ownership and control

2 active
  • Mrs Louise Rosemary Simm
    Individual · since 30 November 2022
    • owns 50–75% of shares
    • holds 50–75% of voting rights
  • Mr Ian John Simm
    Individual · since 30 November 2022
    • owns 50–75% of shares
    • holds 50–75% of voting rights

Persons with significant control hold 25% or more of shares or voting rights. Smaller shareholdings are only listed in confirmation-statement documents. Directors and secretaries: see the officers list at Companies House.

03

Key dates

Incorporated
30 November 20223 yrs ago
First accounts due
30 August 2024788 days overdue
Confirmation statement due
14 December 2026in 48 days

Due dates are expected from Companies House filing rules; confirm on the official register before relying on them.

04

Activity

SIC 43220
Plumbing, heat and air-conditioning installation
Accounts type
Dormant
05

Financials

No accounts on record

Accounts exist on the register but their figures are not in this dataset yet.

06

Filing and accounts signals

Facts from the register · no rating
  • Incorporated two to five years agoIncorporated 30 November 2022
  • Accounts past their due dateDue 30 August 2024

Neutral facts read from the register and filed accounts, each with its evidence. They are not a rating, a prediction or advice, and may be incomplete or out of date. How each signal is derived.

07

Timeline

Newest first
  1. Confirmation statement duein 48 days
  2. First accounts due788 days overdue
  3. Incorporated
08

Similar companies in Portsmouth

Same activity (plumbing, heat and air-conditioning installation), closest in incorporation date

All companies incorporated on 30 November 2022 · in Nov 2022.

09

Reminders for DIAMOND HEATING & COOLING LIMITED

Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.