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- X9 Engineering Limited
Company profile · Electricians
X9 Engineering Limited
X9 Engineering Limited is a 1-year-old private limited company registered in Londonderry, company number NI732254, one of 48 electrical contractors in Londonderry. Its next accounts are due at Companies House on 11 May 2027, and its first CT600 is due at HMRC on 10 August 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 X9 Engineering Limited is registered
The registered office is in Londonderry (BT47), in the Derry City and Strabane local authority area, Northern Ireland. Show BT47 3FZ on a map.
Other trade companies in BT47
- RNK Contracts LimitedGroundworks and demolition
- Den Electrical LtdElectricians
- BDK Consulting LimitedProperty developers
- Oakline Engineering LtdInstallers
- Killew Property Services LimitedFacilities management
- PH Autobody LimitedMechanics and garages
- C Doherty Autos LtdMechanics and garages
- CPMH LtdBuilders
What happens if X9 Engineering 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 11 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 12 May 2027 to 11 Jun 2027 | £150 |
| 1 to 3 months late | 12 Jun 2027 to 11 Aug 2027 | £375 |
| 3 to 6 months late | 12 Aug 2027 to 11 Nov 2027 | £750 |
| More than 6 months late | From 12 Nov 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
- NI732254
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 11 August 2025 (1 year ago)
- Registered office
- 1 Tara Court Brockagh Road, Eglinton, Londonderry, BT47 3FZ
- Nature of business
- Electrical installation (SIC 43210)
- Year end
- 31 August (accounting reference date)
- Accounts type
- No accounts filed yet
Filing notes for electrical contractors
Electrical contracting companies are often a director plus a van and tools. Most fall within the micro-entity rules, so the accounts filed at Companies House are short, and the CT600 carries the tax detail.
Similar companies in Londonderry
Other active electrical contractors registered in Londonderry.
- A.M.K Wind Ltd2025
- Barnailt Electrical Ltd2022
- BT47 Digital Ltd2024
- C&E Electrical Ltd2017
- CM Logue Contracts Ltd2023
- CMWN Electrical Limited2019
- D.Z Commissioning Services Limited2025
- Den Electrical Ltd2026
All electrical contractors in Londonderry · All trades in Londonderry · Electricians across the UK
Frequently asked questions
When are X9 Engineering Limited's accounts due?
X9 Engineering Limited's next accounts are due at Companies House by 11 May 2027 (in 211 days), covering the period to 31 August 2026.
When is X9 Engineering Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 10 August 2026, due by 10 August 2027, and one for the period to 31 August 2026, due by 31 August 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is X9 Engineering Limited still trading?
X9 Engineering Limited is listed as active on the Companies House register (checked 12 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 X9 Engineering Limited do?
X9 Engineering Limited is registered under Electrical installation (SIC 43210).
How old is X9 Engineering Limited?
X9 Engineering Limited was incorporated on 11 August 2025, 1 year ago.
What is the penalty if X9 Engineering 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 X9 Engineering Limited on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.