- Companies
- Civil engineering
- Newport
- Aetherion Engineering Ltd
Aetherion Engineering Ltd
- Company number
- 16909193
- Incorporated
- 14 Dec 2025
- Registered office
- 385 Chepstow Road, Newport, NP19 8HL
- Nature of business
- Construction of utility projects for electricity and telecommunications; Electrical installation; Engineering related scientific and technical consulting activities
Aetherion Engineering Ltd is a newly incorporated private limited company registered in Newport, company number 16909193, one of 80 civil engineering contractors in Newport. Its next accounts are due at Companies House on 14 September 2027, and its first CT600 is due at HMRC on 13 December 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 Aetherion Engineering Ltd is registered
The registered office is in Newport (NP19), in the Newport local authority area, Wales. Show NP19 8HL on a map.
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What happens if Aetherion Engineering 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 14 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 15 Sep 2027 to 14 Oct 2027 | £150 |
| 1 to 3 months late | 15 Oct 2027 to 14 Dec 2027 | £375 |
| 3 to 6 months late | 15 Dec 2027 to 14 Mar 2028 | £750 |
| More than 6 months late | From 15 Mar 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- 16909193
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 14 December 2025
- Registered office
- 385 Chepstow Road, Newport, NP19 8HL
- Nature of business
- Construction of utility projects for electricity and telecommunications (SIC 42220)
Electrical installation (SIC 43210)
Engineering related scientific and technical consulting activities (SIC 71122) - Year end
- 31 December (accounting reference date)
- Accounts type
- No accounts filed yet
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 Newport
Other active civil engineering contractors registered in Newport.
- Ajbrewster Ltd2026
- Allmarque PMS Ltd2008
- Architectural Services (Building & Civil Engineering) Limited1997
- B W Mooring Services Limited2013
- Bce Contracting and Consulting Ltd2026
- C & T Richardson Ltd2017
- C.Williams Traffic Management Limited2025
- Chase Construction Group Ltd2018
All civil engineering contractors in Newport · All trades in Newport · Civil engineering across the UK
Frequently asked questions
When are Aetherion Engineering Ltd's accounts due?
Aetherion Engineering Ltd's next accounts are due at Companies House by 14 September 2027 (in 337 days), covering the period to 31 December 2026.
When is Aetherion Engineering Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 13 December 2026, due by 13 December 2027, and one for the period to 31 December 2026, due by 31 December 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Aetherion Engineering Ltd still trading?
Aetherion Engineering 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 Aetherion Engineering Ltd do?
Aetherion Engineering Ltd is registered under Construction of utility projects for electricity and telecommunications (SIC 42220); Electrical installation (SIC 43210); Engineering related scientific and technical consulting activities (SIC 71122).
How old is Aetherion Engineering Ltd?
Aetherion Engineering Ltd was incorporated on 14 December 2025, less than a year ago.
What is the penalty if Aetherion Engineering 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 Aetherion Engineering 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.