- Companies
- Plumbers and heating engineers
- London
- HJ Smart Heating Ltd
HJ Smart Heating Ltd
- Company number
- 13204962
- Incorporated
- 16 Feb 20215 years trading
- Registered office
- Flat No 1, 393 North End Road, London, SW6 1NR
- Nature of business
- Plumbing, heat and air-conditioning installation
HJ Smart Heating Ltd is a 5-year-old private limited company registered in London, company number 13204962, one of 2,972 plumbing and heating companies in London. Its next accounts are due at Companies House on 31 March 2027, and the CT600 for the period to 30 June 2026 is due at HMRC on 30 June 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 £1,476 (+27.6%) on the year before, to £6,829.
- Net assets rose in 3 of 3 year-on-year comparisons on record.
- Current assets of £7,426 against £597 owed within a year: more than 10 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 4 years, 2022 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Jun 2025 | £6,829 | £7,426 | £597 | 2 | |
| 30 Jun 2024 | £5,353 | £5,950 | £597 | 2 | |
| 30 Jun 2023 | £3,594 | £3,943 | £349 | 2 | |
| 30 Jun 2022 | £2,249 | £3,370 | £1,121 | 2 |
Who runs and owns HJ Smart Heating Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| E*** G*** | Director | Jul 2021 |
2 former officers
| Name | Role | Appointed | Left |
|---|---|---|---|
| B*** A*** | Director | Apr 2021 | Jul 2021 |
| H*** J*** | Director | Feb 2021 | Apr 2021 |
Person with significant control
Where HJ Smart Heating Ltd is registered
The registered office is in London (SW6), in the Hammersmith and Fulham local authority area, London. Show SW6 1NR on a map.
Other trade companies in SW6
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- Euroconsturction LimitedBuilders
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- Earthcom LtdBuilders
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- Catteau Cosntruction LtdInstallers
- R&L Building Projects LtdBuilders
- Fulham Palace Properties LimitedProperty developers
What happens if HJ Smart Heating 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 31 March 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Apr 2027 to 30 Apr 2027 | £150 |
| 1 to 3 months late | 1 May 2027 to 30 Jun 2027 | £375 |
| 3 to 6 months late | 1 Jul 2027 to 30 Sep 2027 | £750 |
| More than 6 months late | From 1 Oct 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2027 | £200 |
| 3 months late | 30 Sep 2027 | another £200 |
| 6 months late | 30 Dec 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 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
- 13204962
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 16 February 2021 (5 years ago)
- Registered office
- Flat No 1, 393 North End Road, London, SW6 1NR
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 30 June (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 June 2025
- Last confirmation statement
- 28 July 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 London
Other active plumbing and heating companies registered in London.
- HJN Plumbing & Heating Ltd2024
- HJR Building Services Ltd2025
- HK Plumbing & Maintenance Ltd2024
- HKN Heating Ltd2026
- HMR Plumbers Ltd2026
- HMR Plumbing & Heating Ltd2022
- Hni Plumbing and Heating Limited2024
- Hobans Plumbing & Heating Limited2019
All plumbing and heating companies in London · All trades in London · Plumbers and heating engineers across the UK
Frequently asked questions
When are HJ Smart Heating Ltd's accounts due?
HJ Smart Heating Ltd's next accounts are due at Companies House by 31 March 2027 (in 169 days), covering the period to 30 June 2026.
When is HJ Smart Heating Ltd's CT600 due?
The CT600 for the period to 30 June 2026 is due at HMRC by 30 June 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 April 2027.
Is HJ Smart Heating Ltd still trading?
HJ Smart Heating 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 HJ Smart Heating Ltd do?
HJ Smart Heating Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is HJ Smart Heating Ltd?
HJ Smart Heating Ltd was incorporated on 16 February 2021, 5 years ago.
Who runs HJ Smart Heating Ltd?
HJ Smart Heating Ltd has 1 active director, the longest-serving appointed in Jul 2021. Their names and service addresses are on the Companies House register.
Who owns HJ Smart Heating Ltd?
One person or company has significant control of HJ Smart Heating Ltd: an individual (owns 75% or more of the shares).
What is the penalty if HJ Smart Heating 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 HJ Smart Heating 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.