- Company number
- 15397616
- Incorporated
- 8 Jan 20242 years trading
- Registered office
- 36 Olma Road, Dunstable, LU5 5AF
- Nature of business
- Construction of commercial buildings
Mir1977 Ltd is a 2-year-old private limited company registered in Dunstable, company number 15397616, one of 213 building contractors in Dunstable. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Where Mir1977 Ltd is registered
The registered office is in Dunstable (LU5), in the Central Bedfordshire local authority area, East of England. Show LU5 5AF on a map.
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What happens if Mir1977 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 31 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 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 | 1 Apr 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 | 31 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
- 15397616
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 8 January 2024 (2 years ago)
- Registered office
- 36 Olma Road, Dunstable, LU5 5AF
- Nature of business
- Construction of commercial buildings (SIC 41201)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 7 January 2026
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 in Dunstable
Other active building contractors registered in Dunstable.
- Miro Building Services Ltd2026
- Miron Construction Ltd2012
- Mititel Construction Services Limited2017
- MNK&Co Limited2022
- Mortimer Design & Build Limited2024
- Mrsu Construction Ltd2025
- Msu Ltd2021
- Nexus Fortis Limited2025
All building contractors in Dunstable · All trades in Dunstable · Builders across the UK
Frequently asked questions
When are Mir1977 Ltd's accounts due?
Mir1977 Ltd's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is Mir1977 Ltd's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Mir1977 Ltd still trading?
Mir1977 Ltd 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 Mir1977 Ltd do?
Mir1977 Ltd is registered under Construction of commercial buildings (SIC 41201).
How old is Mir1977 Ltd?
Mir1977 Ltd was incorporated on 8 January 2024, 2 years ago.
What is the penalty if Mir1977 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 Mir1977 Ltd 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.