- Companies
- Plumbers and heating engineers
- London
- Mozart Plumbing and Heating Limited
Mozart Plumbing and Heating Limited
- Company number
- 15988346
- Incorporated
- 30 Sep 20242 years trading
- Registered office
- Flat 5 Thames Court, Albert Road, London, NW6 5DD
- Nature of business
- Plumbing, heat and air-conditioning installation
Mozart Plumbing and Heating Limited is a 2-year-old private limited company registered in London, company number 15988346, one of 2,972 plumbing and heating companies in London. Its next accounts are due at Companies House on 31 May 2027, and the CT600 for the period to 31 August 2026 is due at HMRC on 31 August 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 31 August 2025, as filed at Companies House.
Where Mozart Plumbing and Heating Limited is registered
The registered office is in London (NW6), in the Brent local authority area, London. Show NW6 5DD on a map.
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What happens if Mozart Plumbing and Heating 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 31 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jun 2027 to 30 Jun 2027 | £150 |
| 1 to 3 months late | 1 Jul 2027 to 31 Aug 2027 | £375 |
| 3 to 6 months late | 1 Sep 2027 to 30 Nov 2027 | £750 |
| More than 6 months late | From 1 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2027 | £200 |
| 3 months late | 30 Nov 2027 | another £200 |
| 6 months late | 29 Feb 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 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
- 15988346
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 30 September 2024 (2 years ago)
- Registered office
- Flat 5 Thames Court, Albert Road, London, NW6 5DD
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 August (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 August 2025
- Last confirmation statement
- 29 September 2025
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.
- MP Engineering Consultancy Ltd2024
- MPG Plumbing and Heating Ltd2021
- MR Gas Ltd2013
- MR Ideal Services Ltd2025
- MR K Plumbing Ltd2021
- MR No Leaks Ltd2024
- MR Perfect Heating & Gas Engineers Ltd2018
- MR Pipe & MR Cable Ltd2022
All plumbing and heating companies in London · All trades in London · Plumbers and heating engineers across the UK
Frequently asked questions
When are Mozart Plumbing and Heating Limited's accounts due?
Mozart Plumbing and Heating Limited's next accounts are due at Companies House by 31 May 2027 (in 230 days), covering the period to 31 August 2026.
When is Mozart Plumbing and Heating Limited's CT600 due?
The CT600 for the period to 31 August 2026 is due at HMRC by 31 August 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 June 2027.
Is Mozart Plumbing and Heating Limited still trading?
Mozart Plumbing and Heating 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 Mozart Plumbing and Heating Limited do?
Mozart Plumbing and Heating Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Mozart Plumbing and Heating Limited?
Mozart Plumbing and Heating Limited was incorporated on 30 September 2024, 2 years ago.
What is the penalty if Mozart Plumbing and Heating 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 Mozart Plumbing and Heating Limited 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.