- Companies
- Plumbers and heating engineers
- Amersham
- Mizzen Construction, Heating & Plumbing Limited
Mizzen Construction, Heating & Plumbing Limited
- Company number
- 09982751
- Incorporated
- 2 Feb 201610 years trading
- Registered office
- Sky House, Raans Road, Amersham, HP6 6JQ
- Nature of business
- Plumbing, heat and air-conditioning installation
Mizzen Construction, Heating & Plumbing Limited is a 10-year-old private limited company registered in Amersham, company number 09982751, one of 24 plumbing and heating companies in Amersham. Its next accounts are due at Companies House on 30 December 2026, and the CT600 for the period to 30 March 2026 is due at HMRC on 30 March 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 £163K on the year before, to -£160K.
- Net assets rose in 2 of 8 year-on-year comparisons on record.
- Current assets of £239K against £265K owed within a year: 0.9 times cover.
- 4 employees on average, down from 8 the year before.
- Balance sheets on record for 9 years, 2017 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Mar 2025 | -£160K | £108K | £239K | £265K | 4 |
| 31 Mar 2024 | £3,161 | £312K | £284K | 8 | |
| 31 Mar 2023 | £26K | £204K | £164K | 8 | |
| 31 Mar 2022 | £57K | £131K | £41K | 8 | |
| 31 Mar 2021 | £80K | £234K | £113K | 12 | |
| 31 Mar 2020 | £920 | £37K | £33K | 8 | |
| 31 Mar 2019 | £12K | £50K | £38K | ||
| 31 Mar 2018 | £23K | £53K | £30K | ||
| 31 Mar 2017 | £14K | £53K | £39K |
Where Mizzen Construction, Heating & Plumbing Limited is registered
The registered office is in Amersham (HP6), in the Buckinghamshire local authority area, South East. Show HP6 6JQ on a map.
Other trade companies in HP6
- An Design & Build LtdBuilders
- Coran Air Conditioning Solutions LtdPlumbers and heating engineers
- Coverplan Heating and Plumbing Services LtdPlumbers and heating engineers
- Samagra Developments LtdProperty developers
- Timmax LimitedCleaning companies
- Oliver Charles Garden Design&Build LtdBuilders
- JS Local Plumbing and Heating LtdPlumbers and heating engineers
- JSB & Son LimitedJoiners and carpenters
Also registered at this address
3 other companies use the same registered office as Mizzen Construction, Heating & Plumbing Limited.
- Build Create LtdBuilders
- Heat Tech Services LimitedPlumbers and heating engineers
- Raans Road Development LimitedProperty developers
What happens if Mizzen Construction, Heating & Plumbing 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 30 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 31 Dec 2026 to 30 Jan 2027 | £150 |
| 1 to 3 months late | 31 Jan 2027 to 30 Mar 2027 | £375 |
| 3 to 6 months late | 31 Mar 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 31 Mar 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Mar 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
- 09982751
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 2 February 2016 (10 years ago)
- Registered office
- Sky House, Raans Road, Amersham, HP6 6JQ
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 30 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 March 2025
- Last confirmation statement
- 1 February 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 Amersham
Other active plumbing and heating companies registered in Amersham.
- Rgas Heating Solutions Ltd2025
- ST. Nicholas Holmes Limited2010
- T.P.R. Mechanical Services Limited1994
- Tyler Fairwater Ltd2026
- Williams Plumbing & Heating Ltd2011
- Worx Heating Limited2013
- Amh Heating Ltd2026
- Ando Plumbing Ltd2020
All plumbing and heating companies in Amersham · All trades in Amersham · Plumbers and heating engineers across the UK
Frequently asked questions
When are Mizzen Construction, Heating & Plumbing Limited's accounts due?
Mizzen Construction, Heating & Plumbing Limited's next accounts are due at Companies House by 30 December 2026 (in 78 days), covering the period to 30 March 2026.
When is Mizzen Construction, Heating & Plumbing Limited's CT600 due?
The CT600 for the period to 30 March 2026 is due at HMRC by 30 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 31 December 2026.
Is Mizzen Construction, Heating & Plumbing Limited still trading?
Mizzen Construction, Heating & Plumbing 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 Mizzen Construction, Heating & Plumbing Limited do?
Mizzen Construction, Heating & Plumbing Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Mizzen Construction, Heating & Plumbing Limited?
Mizzen Construction, Heating & Plumbing Limited was incorporated on 2 February 2016, 10 years ago.
What is the penalty if Mizzen Construction, Heating & Plumbing 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 Mizzen Construction, Heating & Plumbing 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.