- Companies
- Civil engineering
- London
- Martin Structural Engineers Limited
Martin Structural Engineers Limited
- Company number
- 16220380
- Incorporated
- 31 Jan 20251 year trading
- Registered office
- 4 Edward Square, London, N1 0SP
- Nature of business
- Construction of other civil engineering projects n.e.c.
Martin Structural Engineers Limited is a 1-year-old private limited company registered in London, company number 16220380, one of 1,853 civil engineering contractors in London. Its next accounts are due at Companies House on 31 December 2027, and the CT600 for the period to 31 March 2027 is due at HMRC on 31 March 2028.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2026
From the balance sheet at 31 March 2026, as filed at Companies House. Negative net assets mean the company owed more than it owned at that date.
Where Martin Structural Engineers Limited is registered
The registered office is in London (N1), in the Islington local authority area, London. Show N1 0SP on a map.
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Also registered at this address
1 other company uses the same registered office as Martin Structural Engineers Limited.
- Martin Redston Associates LimitedCivil engineering
What happens if Martin Structural Engineers 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 December 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2028 to 31 Jan 2028 | £150 |
| 1 to 3 months late | 1 Feb 2028 to 31 Mar 2028 | £375 |
| 3 to 6 months late | 1 Apr 2028 to 30 Jun 2028 | £750 |
| More than 6 months late | From 1 Jul 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 16220380
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 31 January 2025 (1 year ago)
- Registered office
- 4 Edward Square, London, N1 0SP
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2026
- Last confirmation statement
- 11 June 2026
Filing notes for civil engineering contractors
Civil engineering contractors usually carry plant and machinery, so capital allowances (the annual investment allowance and the main pool) do much of the work in the corporation tax computation.
Similar companies in London
Other active civil engineering contractors registered in London.
- Martindale Marine Consultants Ltd2025
- Martins Digging World Limited2025
- Martyn Ltd.2015
- Maruti Builders Ltd2012
- Marveros Ltd2015
- Mascroft Ltd2018
- Master Manole Ltd2025
- Masterfixworks Limited2015
All civil engineering contractors in London · All trades in London · Civil engineering across the UK
Frequently asked questions
When are Martin Structural Engineers Limited's accounts due?
Martin Structural Engineers Limited's next accounts are due at Companies House by 31 December 2027 (in 445 days), covering the period to 31 March 2027.
When is Martin Structural Engineers Limited's CT600 due?
The CT600 for the period to 31 March 2027 is due at HMRC by 31 March 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2028.
Is Martin Structural Engineers Limited still trading?
Martin Structural Engineers 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 Martin Structural Engineers Limited do?
Martin Structural Engineers Limited is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is Martin Structural Engineers Limited?
Martin Structural Engineers Limited was incorporated on 31 January 2025, 1 year ago.
What is the penalty if Martin Structural Engineers 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 Martin Structural Engineers 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.