- Companies
- Civil engineering
- Belfast
- Poweroptix Limited
Poweroptix Limited
- Company number
- NI700904
- Incorporated
- 25 Aug 20233 years trading
- Registered office
- The Kelvin, College Square East, Belfast, BT1 6DE
- Nature of business
- Construction of utility projects for electricity and telecommunications
Poweroptix Limited is a 3-year-old private limited company registered in Belfast, company number NI700904, one of 67 civil engineering contractors in Belfast. 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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Where Poweroptix Limited is registered
The registered office is in Belfast (BT1), in the Belfast local authority area, Northern Ireland. Show BT1 6DE on a map.
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Also registered at this address
3 other companies use the same registered office as Poweroptix Limited.
- Meelmore Consulting LtdProperty developers
- Meelmore Developments LtdProperty developers
- Meelmore Estates LtdProperty developers
What happens if Poweroptix 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 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
- NI700904
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 25 August 2023 (3 years ago)
- Registered office
- The Kelvin, College Square East, Belfast, BT1 6DE
- Nature of business
- Construction of utility projects for electricity and telecommunications (SIC 42220)
- Year end
- 31 January (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 January 2025
- Last confirmation statement
- 9 December 2025
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 Belfast
Other active civil engineering contractors registered in Belfast.
- Professional Rail Solutions Ltd2022
- Proplan Europe Limited2015
- Purapipe UK Ltd2019
- R J Pipeline Engineering Ltd2011
- Retain Solutions Ltd1996
- Rockmount Utilities Limited2014
- Rowland Engineering Ltd2015
- SCL Electrical/Civil Engineering Ltd2025
All civil engineering contractors in Belfast · All trades in Belfast · Civil engineering across the UK
Frequently asked questions
When are Poweroptix Limited's accounts due?
Poweroptix Limited's next accounts are due at Companies House by 31 October 2026 (in 19 days), covering the period to 31 January 2026.
When is Poweroptix Limited'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 Poweroptix Limited still trading?
Poweroptix 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 Poweroptix Limited do?
Poweroptix Limited is registered under Construction of utility projects for electricity and telecommunications (SIC 42220).
How old is Poweroptix Limited?
Poweroptix Limited was incorporated on 25 August 2023, 3 years ago.
What is the penalty if Poweroptix 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 Poweroptix 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.