- Companies
- Plumbers and heating engineers
- Barnet
- Heatline London Ltd
Heatline London Ltd
- Company number
- 12681826
- Incorporated
- 19 Jun 20206 years trading
- Registered office
- 71 Leeside, Barnet, EN5 2PE
- Nature of business
- Plumbing, heat and air-conditioning installation
Heatline London Ltd is a 6-year-old private limited company registered in Barnet, company number 12681826, one of 75 plumbing and heating companies in Barnet. Its next accounts are due at Companies House on 30 April 2027, and the CT600 for the period to 30 July 2026 is due at HMRC on 30 July 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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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 up £3,795 (+164.9%) on the year before, to £6,096.
- Net assets rose in 3 of 4 year-on-year comparisons on record.
- Current assets of £9,663 against £681 owed within a year: more than 10 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 5 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Jul 2025 | £6,096 | £9,663 | £681 | 1 | |
| 30 Jul 2024 | £2,301 | £4,479 | £178 | 1 | |
| 30 Jul 2023 | -£3,591 | £3,591 | 1 | ||
| 30 Jul 2022 | £6,191 | £27K | £21K | 0 | |
| 30 Jun 2021 | £1 |
Who runs and owns Heatline London Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| J*** B*** | Director | Jun 2020 |
Person with significant control
Where Heatline London Ltd is registered
The registered office is in Barnet (EN5), in the Barnet local authority area, London. Show EN5 2PE on a map.
Other trade companies in EN5
- Paysa Gas LtdPlumbers and heating engineers
- Greatway Business LtdInstallers
- Je Mobile Tyres LtdMechanics and garages
- Barnet Air LtdPlumbers and heating engineers
- Hutch Electrical LtdElectricians
- Nexflow Mechanical LtdSpecialist contractors
- A J Plant LtdMotor traders
- Plumbing365 LtdPlumbers and heating engineers
Also registered at this address
1 other company uses the same registered office as Heatline London Ltd.
- London Renew & Refurb LimitedPlumbers and heating engineers
What happens if Heatline London Ltd 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 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 May 2027 to 31 May 2027 | £150 |
| 1 to 3 months late | 1 Jun 2027 to 31 Jul 2027 | £375 |
| 3 to 6 months late | 1 Aug 2027 to 31 Oct 2027 | £750 |
| More than 6 months late | From 1 Nov 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 31 Jul 2027 | £200 |
| 3 months late | 30 Oct 2027 | another £200 |
| 6 months late | 30 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jul 2028 | another 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
- 12681826
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 19 June 2020 (6 years ago)
- Registered office
- 71 Leeside, Barnet, EN5 2PE
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 30 July (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 July 2025
- Last confirmation statement
- 29 June 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 Barnet
Other active plumbing and heating companies registered in Barnet.
- Heatmaster London Ltd2016
- J A Heating & Plumbing Limited2011
- JJB Plumbing and Heating Barbican Ltd2026
- JJW Plumbing Ltd2019
- JPT Ventilation Limited2019
- JRG Plumbing & Gas Ltd2024
- KCS Weld Limited2019
- Keystone Retrofit Group Ltd2026
All plumbing and heating companies in Barnet · All trades in Barnet · Plumbers and heating engineers across the UK
Frequently asked questions
When are Heatline London Ltd's accounts due?
Heatline London Ltd's next accounts are due at Companies House by 30 April 2027 (in 198 days), covering the period to 30 July 2026.
When is Heatline London Ltd's CT600 due?
The CT600 for the period to 30 July 2026 is due at HMRC by 30 July 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 May 2027.
Is Heatline London Ltd still trading?
Heatline London Ltd 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 Heatline London Ltd do?
Heatline London Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Heatline London Ltd?
Heatline London Ltd was incorporated on 19 June 2020, 6 years ago.
Who runs Heatline London Ltd?
Heatline London Ltd has 1 active director, the longest-serving appointed in Jun 2020. Their names and service addresses are on the Companies House register.
Who owns Heatline London Ltd?
One person or company has significant control of Heatline London Ltd: an individual (owns 75% or more of the shares).
What is the penalty if Heatline London Ltd 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 Heatline London Ltd on Companies House for filed documents, officers and the full history.
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.