- Companies
- Plumbers and heating engineers
- Hounslow
- Harsh Gas Engineering Ltd
Harsh Gas Engineering Ltd
- Company number
- 12689931
- Incorporated
- 22 Jun 20206 years trading
- Registered office
- 35 Fern Lane, Hounslow, TW5 0HN
- Nature of business
- Plumbing, heat and air-conditioning installation; Other construction installation
Harsh Gas Engineering Ltd is a 6-year-old private limited company registered in Hounslow, company number 12689931, one of 58 plumbing and heating companies in Hounslow. 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 £1,322 (+33.7%) on the year before, to £5,250.
- Net assets rose in 3 of 4 year-on-year comparisons on record.
- Current assets of £6,498 against £1,248 owed within a year: 5.2 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- 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 Jun 2025 | £5,250 | £6,498 | £1,248 | 0 | |
| 30 Jun 2024 | £3,928 | £5,775 | £1,847 | 0 | |
| 30 Jun 2023 | -£1,789 | £692 | £1,786 | 0 | |
| 30 Jun 2022 | -£3,049 | £5 | £1,289 | 0 | |
| 30 Jun 2021 | £100 | £100 | 0 |
Where Harsh Gas Engineering Ltd is registered
The registered office is in Hounslow (TW5), in the Hounslow local authority area, London. Show TW5 0HN on a map.
Other trade companies in TW5
- RSM Builderz LtdCleaning companies
- BSSB Construction LtdProperty developers
- Caliber Home Improvements LtdBuilders
- Gurbir Construction LtdBuilders
- Mangveer LtdBuilders
- Hadi & Eesa Enterprises LtdMotor traders
- Basarab Brickwork LtdBuilders
- Dave Cleaning Services LtdCleaning companies
What happens if Harsh Gas Engineering 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
- 12689931
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 22 June 2020 (6 years ago)
- Registered office
- 35 Fern Lane, Hounslow, TW5 0HN
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
Other construction installation (SIC 43290) - Year end
- 30 June (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 June 2025
- Last confirmation statement
- 14 September 2026
- Previous names
- Harsh Enterprise Ltd (until 15 Sep 2021)
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 Hounslow
Other active plumbing and heating companies registered in Hounslow.
- HS Heating & Plumbing Services Ltd2025
- Invidia Ltd2019
- Iyjh Limited2026
- J&J Heating & Plumbing Ltd2019
- Josu Air Install Ltd2026
- JPH & Co Solutions Limited2023
- JTRC Ltd2026
- K.J. Corgi Ltd2018
All plumbing and heating companies in Hounslow · All trades in Hounslow · Plumbers and heating engineers across the UK
Frequently asked questions
When are Harsh Gas Engineering Ltd's accounts due?
Harsh Gas Engineering Ltd's next accounts are due at Companies House by 31 March 2027 (in 170 days), covering the period to 30 June 2026.
When is Harsh Gas Engineering 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 Harsh Gas Engineering Ltd still trading?
Harsh Gas Engineering 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 Harsh Gas Engineering Ltd do?
Harsh Gas Engineering Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220); Other construction installation (SIC 43290).
How old is Harsh Gas Engineering Ltd?
Harsh Gas Engineering Ltd was incorporated on 22 June 2020, 6 years ago.
What is the penalty if Harsh Gas Engineering 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 Harsh Gas Engineering 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.