Mizen Construction Limited
- Company number
- 02864556
- Incorporated
- 20 Oct 199332 years trading
- Registered office
- No 1 Railshead Road, ST Margarets, Old Isleworth, TW7 7EP
- Nature of business
- Construction of domestic buildings
Mizen Construction Limited is a 32-year-old private limited company registered in Old Isleworth, company number 02864556, one of the UK's building contractors. Its next accounts are due at Companies House on 31 October 2027, and the CT600 for the period to 31 January 2027 is due at HMRC on 31 January 2028.
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 unchanged on the year before, at £515K.
- Net assets rose in 1 of 9 year-on-year comparisons on record.
- Current assets of £2 against £515K owed within a year: 0.0 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 10 years, 2016 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jan 2026 | £515K | £2 | £515K | 0 | |
| 31 Jan 2025 | £515K | £2 | £515K | 0 | |
| 31 Jan 2024 | £2 | £2 | £515K | 0 | |
| 31 Jan 2023 | £2 | £2 | £515K | 0 | |
| 31 Oct 2021 | £2 | £2 | |||
| 31 Oct 2020 | £2 | £2 | |||
| 31 Oct 2019 | £2 | £2 | |||
| 31 Oct 2018 | £2 | £2 | |||
| 31 Oct 2017 | £2 | £2 | |||
| 31 Oct 2016 | £2 | £2 |
Where Mizen Construction Limited is registered
The registered office is in Old Isleworth (TW7), in the Richmond upon Thames local authority area, London. Show TW7 7EP on a map.
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- KS Garage Isleworth LtdMotor traders
- C Wiseman Services LtdCleaning companies
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Also registered at this address
1 other company uses the same registered office as Mizen Construction Limited.
- M M Properties ( London ) LimitedProperty developers
What happens if Mizen Construction 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 October 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2027 to 30 Nov 2027 | £150 |
| 1 to 3 months late | 1 Dec 2027 to 31 Jan 2028 | £375 |
| 3 to 6 months late | 1 Feb 2028 to 30 Apr 2028 | £750 |
| More than 6 months late | From 1 May 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2028 | £200 |
| 3 months late | 30 Apr 2028 | another £200 |
| 6 months late | 31 Jul 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 2029 | 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
- 02864556
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 20 October 1993 (32 years ago)
- Registered office
- No 1 Railshead Road, ST Margarets, Old Isleworth, TW7 7EP
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 31 January (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 January 2026
- Last confirmation statement
- 20 October 2025
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies
Other active building contractors.
Frequently asked questions
When are Mizen Construction Limited's accounts due?
Mizen Construction Limited's next accounts are due at Companies House by 31 October 2027 (in 384 days), covering the period to 31 January 2027.
When is Mizen Construction Limited's CT600 due?
The CT600 for the period to 31 January 2027 is due at HMRC by 31 January 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 November 2027.
Is Mizen Construction Limited still trading?
Mizen Construction 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 Mizen Construction Limited do?
Mizen Construction Limited is registered under Construction of domestic buildings (SIC 41202).
How old is Mizen Construction Limited?
Mizen Construction Limited was incorporated on 20 October 1993, 32 years ago.
What is the penalty if Mizen Construction 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 Mizen Construction 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.