1. Companies
  2. Plumbers and heating engineers
  3. Princes Risborough
  4. 3Heat Limited

3Heat Limited

Company number
12907838
Incorporated
28 Sep 20206 years trading
Registered office
3 Forge House, Summerleys Road, Princes Risborough, Bucks, HP27 9DT
Nature of business
Plumbing, heat and air-conditioning installation
Accounts due in
261 days
30 Jun 2027
Net assets
£457▼
-93.9% on the year before
Employees
2
Average during the year
From the Companies House register, 1 Oct 2026

3Heat Limited is a 6-year-old private limited company registered in Princes Risborough, company number 12907838, one of 15 plumbing and heating companies in Princes Risborough. Its next accounts are due at Companies House on 30 June 2027, and the CT600 for the period to 30 September 2026 is due at HMRC on 30 September 2027.

Key dates

Worked out from the year end and filing history on the Companies House register.

Accounts due
30 Jun 2027
in 261 days
For the period to 30 Sep 2026
CT600 due
30 Sep 2027
in 353 days
Period 1 Oct 2025 to 30 Sep 2026
Corporation tax payment
1 Jul 2027
in 262 days
9 months and 1 day after the period end
Confirmation statement
11 Oct 2027
in 364 days
Last made up to 27 Sep 2026

Is this your company?

File the accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.

File for 3Heat Limited

Or get a reminder before each deadline

Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.

Finances

From each year's balance sheet filed at Companies House. Small companies do not have to publish turnover or profit, so these are balance sheet figures.

  • Net assets down £7,016 (-93.9%) on the year before, to £457.
  • Net assets rose in 2 of 4 year-on-year comparisons on record.
  • 2 employees on average during the year.
  • Balance sheets on record for 5 years, 2021 to 2025.

Net assets by year

Net assets at each year end, 2021 to 2025-£10K£0£10K30 September 2021: net assets -£12K-£12K202130 September 2022: net assets £7£7202230 September 2023: net assets £15K£15K202330 September 2024: net assets £7,473£7,473202430 September 2025: net assets £457£4572025
Net assets at each year end, 2021 to 2025-£10K£0£10K30 September 2021: net assets -£12K-£12K202130 September 2022: net assets £7£7202230 September 2023: net assets £15K£15K202330 September 2024: net assets £7,473£7,473202430 September 2025: net assets £457£4572025
Year endNet assetsCashCurrent assetsOwed within a yearEmployees
30 Sep 2025£457£15K2
30 Sep 2024£7,473£13K2
30 Sep 2023£15K£13K2
30 Sep 2022£7£26K2
30 Sep 2021-£12K£13K1

Who runs and owns 3Heat Limited

From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.

Officers (3)

NameRoleAppointed
J*** M***DirectorSep 2020
L*** M***DirectorOct 2021
Harmonea LtdSecretary (company)Sep 2021
1 former officer
NameRoleAppointedLeft
L*** M***SecretarySep 2020Sep 2021

People with significant control (2)

Individual · since Sep 2020
J*** M***
Can appoint and remove directors
Individual · since Sep 2020
L*** M***
Has significant influence or control

Where 3Heat Limited is registered

3Heat Limited's registered office on a map of the UK

The registered office is in Princes Risborough (HP27), in the Buckinghamshire local authority area, South East. Show HP27 9DT on a map.

Other trade companies in HP27

Also registered at this address

22 other companies use the same registered office as 3Heat Limited.

What happens if 3Heat Limited files late

Companies House charges an automatic penalty the day after the deadline, and it rises the longer the accounts are late. These are the dates for this company's accounts due on 30 June 2027.

Companies HouseAccounts deliveredPenalty
Up to 1 month late1 Jul 2027 to 31 Jul 2027£150
1 to 3 months late1 Aug 2027 to 30 Sep 2027£375
3 to 6 months late1 Oct 2027 to 31 Dec 2027£750
More than 6 months lateFrom 1 Jan 2028£1,500

Penalties double if the accounts were also late the year before.

HMRC (CT600)FromPenalty
1 day late1 Oct 2027£200
3 months late30 Dec 2027another £200
6 months late30 Mar 2028HMRC estimates the tax and adds 10% of the unpaid tax
12 months late30 Sep 2028another 10% of any unpaid tax

For returns filed on or after 1 April 2026. Late three times in a row and the £200 penalties become £1,000 each.

Company details

As held on the Companies House register.

Company number
12907838
Status
Active
Company type
Private limited company
Incorporated
28 September 2020 (6 years ago)
Registered office
3 Forge House, Summerleys Road, Princes Risborough, Bucks, HP27 9DT
Nature of business
Plumbing, heat and air-conditioning installation (SIC 43220)
Year end
30 September (accounting reference date)
Accounts type
Micro-entity
Last accounts made up to
30 September 2025
Last confirmation statement
27 September 2026

Filing notes for plumbing and heating companies

Plumbing and heating companies frequently work under CIS for main contractors and also directly for homeowners, so turnover can mix CIS and non-CIS income.

Similar companies in Princes Risborough

Other active plumbing and heating companies registered in Princes Risborough.

All plumbing and heating companies in Princes Risborough · All trades in Princes Risborough · Plumbers and heating engineers across the UK

Frequently asked questions

When are 3Heat Limited's accounts due?

3Heat Limited's next accounts are due at Companies House by 30 June 2027 (in 261 days), covering the period to 30 September 2026.

When is 3Heat Limited's CT600 due?

The CT600 for the period to 30 September 2026 is due at HMRC by 30 September 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 July 2027.

Is 3Heat Limited still trading?

3Heat Limited is listed as active on the Companies House register as of 1 Oct 2026. Active means it has not been dissolved or entered insolvency; it does not show whether it is currently taking on work.

What does 3Heat Limited do?

3Heat Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).

How old is 3Heat Limited?

3Heat Limited was incorporated on 28 September 2020, 6 years ago.

Who runs 3Heat Limited?

3Heat Limited has 2 active directors, the longest-serving appointed in Sep 2020. Their names and service addresses are on the Companies House register.

Who owns 3Heat Limited?

2 people or companies have significant control of 3Heat Limited: an individual (can appoint and remove directors); an individual (has significant influence or control).

What is the penalty if 3Heat Limited files its accounts late?

Companies House charges £150 if the accounts are up to 1 month late, £375 up to 3 months, £750 up to 6 months and £1,500 after that, doubled if the previous year's accounts were also late. HMRC charges £200 for a CT600 filed a day late and another £200 at 3 months.

Official records

View 3Heat Limited on Companies House for filed documents, officers and the full history.

Report an error on this page

Based on the Companies House register (snapshot 1 Oct 2026). Deadlines are worked out from the register and assume a standard accounting period; a change of year end or a short period moves them. This page is general information, not tax or accountancy advice.

File accounts + CT600File now£49Let's talk