- Companies
- Civil engineering
- Prestonpans
- Emain Energy Ltd
Emain Energy Ltd
- Company number
- SC756222
- Incorporated
- 23 Jan 20233 years trading
- Registered office
- 5 Castle Avenue, Port Seton, Prestonpans, EH32 0EL
- Nature of business
- Construction of utility projects for electricity and telecommunications; Electrical installation
Emain Energy Ltd is a 3-year-old private limited company registered in Prestonpans, company number SC756222, one of the UK's civil engineering contractors. Its next accounts are due at Companies House on 31 October 2026, and the CT600 for the period to 31 January 2026 is due at HMRC on 31 January 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 £23 (-85.2%) on the year before, to £4.
- Current assets of £13K against £13K owed within a year: 1.0 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 2 years, 2024 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jan 2025 | £4 | £764 | £13K | £13K | 1 |
| 31 Jan 2024 | £27 | £6,614 | £9,526 | £9,499 | 1 |
Where Emain Energy Ltd is registered
The registered office is in Prestonpans (EH32), in the East Lothian local authority area, Scotland. Show EH32 0EL on a map.
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What happens if Emain Energy 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 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2026 to 30 Nov 2026 | £150 |
| 1 to 3 months late | 1 Dec 2026 to 31 Jan 2027 | £375 |
| 3 to 6 months late | 1 Feb 2027 to 30 Apr 2027 | £750 |
| More than 6 months late | From 1 May 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
- SC756222
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 23 January 2023 (3 years ago)
- Registered office
- 5 Castle Avenue, Port Seton, Prestonpans, EH32 0EL
- Nature of business
- Construction of utility projects for electricity and telecommunications (SIC 42220)
Electrical installation (SIC 43210) - Year end
- 31 January (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 January 2025
- Last confirmation statement
- 22 January 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 Prestonpans
Other active civil engineering contractors registered in Prestonpans.
All civil engineering contractors in Prestonpans · All trades in Prestonpans · Civil engineering across the UK
Frequently asked questions
When are Emain Energy Ltd's accounts due?
Emain Energy Ltd's next accounts are due at Companies House by 31 October 2026 (in 18 days), covering the period to 31 January 2026.
When is Emain Energy Ltd's CT600 due?
The CT600 for the period to 31 January 2026 is due at HMRC by 31 January 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 November 2026.
Is Emain Energy Ltd still trading?
Emain Energy 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 Emain Energy Ltd do?
Emain Energy Ltd is registered under Construction of utility projects for electricity and telecommunications (SIC 42220); Electrical installation (SIC 43210).
How old is Emain Energy Ltd?
Emain Energy Ltd was incorporated on 23 January 2023, 3 years ago.
What is the penalty if Emain Energy 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 Emain Energy 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.