- Companies
- Specialist contractors
- Sevenoaks
- Mirox Construction Limited
Mirox Construction Limited
- Company number
- 16216880
- Incorporated
- 29 Jan 20251 year trading
- Registered office
- Hillside House Gravesend Road, Wrotham, Sevenoaks, TN15 7JH
- Nature of business
- Other specialised construction activities n.e.c.
Mirox Construction Limited is a 1-year-old private limited company registered in Sevenoaks, company number 16216880, one of 63 specialist construction companies in Sevenoaks. Its next accounts are due at Companies House on 29 October 2026, and its first CT600 is due at HMRC on 28 January 2027.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Where Mirox Construction Limited is registered
The registered office is in Sevenoaks (TN15), in the Tonbridge and Malling local authority area, South East. Show TN15 7JH on a map.
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Also registered at this address
2 other companies use the same registered office as Mirox Construction Limited.
- Mirox Development LimitedSpecialist contractors
- Servico Group LtdCleaning companies
What happens if Mirox 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 29 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 30 Oct 2026 to 29 Nov 2026 | £150 |
| 1 to 3 months late | 30 Nov 2026 to 29 Jan 2027 | £375 |
| 3 to 6 months late | 30 Jan 2027 to 29 Apr 2027 | £750 |
| More than 6 months late | From 30 Apr 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 31 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 16216880
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 29 January 2025 (1 year ago)
- Registered office
- Hillside House Gravesend Road, Wrotham, Sevenoaks, TN15 7JH
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 January (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 28 January 2026
Filing notes for specialist construction companies
Specialist contractors often work under CIS for main contractors. Retentions held back by the customer still count towards turnover once the work is done.
Similar companies in Sevenoaks
Other active specialist construction companies registered in Sevenoaks.
- Mirox Development Limited2014
- Montpelier London Ltd2024
- N Rose Interiors Limited2006
- NKM Fire Installations Limited2010
- Novaworks Ltd2019
- Nubrick Conservation & Restoration Ltd2025
- Omaz Ltd2018
- Optimus Contractors Ltd2022
All specialist construction companies in Sevenoaks · All trades in Sevenoaks · Specialist contractors across the UK
Frequently asked questions
When are Mirox Construction Limited's accounts due?
Mirox Construction Limited's next accounts are due at Companies House by 29 October 2026 (in 17 days), covering the period to 31 January 2026.
When is Mirox Construction Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 28 January 2026, due by 28 January 2027, and one for the period to 31 January 2026, due by 31 January 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Mirox Construction Limited still trading?
Mirox 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 Mirox Construction Limited do?
Mirox Construction Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Mirox Construction Limited?
Mirox Construction Limited was incorporated on 29 January 2025, 1 year ago.
What is the penalty if Mirox 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 Mirox 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.