- Companies
- Plumbers and heating engineers
- London
- Hammersmith Heating Ltd
Hammersmith Heating Ltd
- Company number
- 12230476
- Incorporated
- 27 Sep 20197 years trading
- Registered office
- C/O Simmons Gainsford 14TH Floor, 33 Cavendish Square, London, W1G 0PW
- Nature of business
- Plumbing, heat and air-conditioning installation
Hammersmith Heating Ltd is a 7-year-old private limited company registered in London, company number 12230476, one of 2,972 plumbing and heating companies in London. 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.
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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 down £19K (-46.2%) on the year before, to £22K.
- Net assets rose in 2 of 5 year-on-year comparisons on record.
- Current assets of £59K against £42K owed within a year: 1.4 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 6 years, 2020 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Sep 2025 | £22K | £59K | £42K | 1 | |
| 30 Sep 2024 | £40K | £94K | £59K | 1 | |
| 30 Sep 2023 | £23K | £75K | £59K | 1 | |
| 30 Sep 2022 | £8,544 | £59K | £57K | 1 | |
| 30 Sep 2021 | £20K | £66K | £51K | 1 | |
| 30 Sep 2020 | £22K | £76K | £60K | 1 |
Where Hammersmith Heating Ltd is registered
The registered office is in London (W1G), in the Westminster local authority area, London. Show W1G 0PW on a map.
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- Trembit UK LtdElectricians
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Also registered at this address
8 other companies use the same registered office as Hammersmith Heating Ltd.
- Challoner Properties LimitedProperty developers
- Dalwood Properties LimitedProperty developers
- Drake & Co LtdProperty developers
- Drake and Company Consultants LimitedProperty developers
- Montague Tigg LimitedProperty developers
- NJH Motorsport Services LimitedMechanics and garages
- Rilu Windows & Doors LimitedGlaziers
- Stride Install LtdElectricians
What happens if Hammersmith 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 30 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jul 2027 to 31 Jul 2027 | £150 |
| 1 to 3 months late | 1 Aug 2027 to 30 Sep 2027 | £375 |
| 3 to 6 months late | 1 Oct 2027 to 31 Dec 2027 | £750 |
| More than 6 months late | From 1 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 12230476
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 27 September 2019 (7 years ago)
- Registered office
- C/O Simmons Gainsford 14TH Floor, 33 Cavendish Square, London, W1G 0PW
- 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
- 26 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 London
Other active plumbing and heating companies registered in London.
- Hampstead Plumbing & Heating Ltd2010
- Hampstead Plumbing Ltd2017
- Hampton Middleeast Limited2026
- Hampton Plumbers Ltd2026
- Hamsher Plumbing & Heating Limited2025
- Handigopro Ltd2026
- Handyman Services DT Limited2025
- Happy Boiler Plumbers Ltd2024
All plumbing and heating companies in London · All trades in London · Plumbers and heating engineers across the UK
Frequently asked questions
When are Hammersmith Heating Ltd's accounts due?
Hammersmith Heating Ltd's next accounts are due at Companies House by 30 June 2027 (in 261 days), covering the period to 30 September 2026.
When is Hammersmith Heating Ltd'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 Hammersmith Heating Ltd still trading?
Hammersmith Heating Ltd is listed as active on the Companies House register (checked 12 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 Hammersmith Heating Ltd do?
Hammersmith Heating Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Hammersmith Heating Ltd?
Hammersmith Heating Ltd was incorporated on 27 September 2019, 7 years ago.
What is the penalty if Hammersmith 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 Hammersmith Heating Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.