- Companies
- Civil engineering
- Whitland
- Amagon Energy Ltd
Amagon Energy Ltd
- Company number
- 15762039
- Incorporated
- 5 Jun 20242 years trading
- Registered office
- Mountain Town, Tavernspite, Whitland, Pembrokeshire, SA34 0NN
- Nature of business
- Construction of utility projects for electricity and telecommunications; Other construction installation; Sale of used cars and light motor vehicles; Other letting and operating of own or leased real estate
Amagon Energy Ltd is a 2-year-old private limited company registered in Whitland, company number 15762039, one of the UK's civil engineering contractors. Its next accounts are due at Companies House on 31 May 2027, and the CT600 for the period to 31 August 2026 is due at HMRC on 31 August 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
Is this your company?
File the accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for Amagon Energy LtdOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
Financial snapshot, 2025
From the balance sheet at 31 August 2025, as filed at Companies House.
Where Amagon Energy Ltd is registered
The registered office is in Whitland (SA34), in the Pembrokeshire local authority area, Wales. Show SA34 0NN on a map.
Other trade companies in SA34
- MD Morris Construction LimitedBuilders
- WWPM LimitedCleaning companies
- LBR Car and Commercials LtdMachinery repair and installation
- Wyn Davies Construction LtdBuilders
- Jay's Demolition LimitedGroundworks and demolition
- Coastal Leadwork & Roofing LimitedFinishing trades
- Wynne Phillips Truck Centre LtdMechanics and garages
- Windlec LtdElectricians
Also registered at this address
1 other company uses the same registered office as Amagon Energy Ltd.
- Amagon LtdInstallers
What happens if Amagon 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 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jun 2027 to 30 Jun 2027 | £150 |
| 1 to 3 months late | 1 Jul 2027 to 31 Aug 2027 | £375 |
| 3 to 6 months late | 1 Sep 2027 to 30 Nov 2027 | £750 |
| More than 6 months late | From 1 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2027 | £200 |
| 3 months late | 30 Nov 2027 | another £200 |
| 6 months late | 29 Feb 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 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
- 15762039
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 5 June 2024 (2 years ago)
- Registered office
- Mountain Town, Tavernspite, Whitland, Pembrokeshire, SA34 0NN
- Nature of business
- Construction of utility projects for electricity and telecommunications (SIC 42220)
Other construction installation (SIC 43290)
Sale of used cars and light motor vehicles (SIC 45112)
Other letting and operating of own or leased real estate (SIC 68209) - Year end
- 31 August (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 August 2025
- Last confirmation statement
- 4 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 Whitland
Other active civil engineering contractors registered in Whitland.
All civil engineering contractors in Whitland · All trades in Whitland · Civil engineering across the UK
Frequently asked questions
When are Amagon Energy Ltd's accounts due?
Amagon Energy Ltd's next accounts are due at Companies House by 31 May 2027 (in 229 days), covering the period to 31 August 2026.
When is Amagon Energy Ltd's CT600 due?
The CT600 for the period to 31 August 2026 is due at HMRC by 31 August 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 June 2027.
Is Amagon Energy Ltd still trading?
Amagon 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 Amagon Energy Ltd do?
Amagon Energy Ltd is registered under Construction of utility projects for electricity and telecommunications (SIC 42220); Other construction installation (SIC 43290); Sale of used cars and light motor vehicles (SIC 45112); Other letting and operating of own or leased real estate (SIC 68209).
How old is Amagon Energy Ltd?
Amagon Energy Ltd was incorporated on 5 June 2024, 2 years ago.
What is the penalty if Amagon 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 Amagon 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.