- Company number
- 07103334
- Incorporated
- 14 Dec 200916 years trading
- Registered office
- 9 Partridge Road, Roath, Cardiff, South Glamorgan, CF24 3QW
- Nature of business
- Construction of domestic buildings
Eureka Electrical Ltd is a 16-year-old private limited company registered in Cardiff, company number 07103334, one of 361 building contractors in Cardiff. Its next accounts are due at Companies House on 29 April 2027, and the CT600 for the period to 29 July 2026 is due at HMRC on 29 July 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 £3,887 (-4.7%) on the year before, to £79K.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- Current assets of £122K against £42K owed within a year: 2.9 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jul 2025 | £79K | £122K | £42K | 1 | |
| 31 Jul 2024 | £83K | £106K | £20K | 1 | |
| 31 Jul 2023 | £86K | £172K | £80K | 1 | |
| 31 Jul 2022 | £90K | £175K | £73K | 1 | |
| 31 Jul 2021 | £78K | £175K | £82K | 1 | |
| 31 Jul 2020 | £66K | £149K | £69K | 1 | |
| 31 Jul 2019 | £60K | £133K | £73K | 1 | |
| 31 Jul 2018 | £40K | ||||
| 31 Jul 2017 | £11K | £64K | £64K | ||
| 31 Jul 2016 | £7 | £24K | £41K |
Where Eureka Electrical Ltd is registered
The registered office is in Cardiff (CF24), in the Cardiff local authority area, Wales. Show CF24 3QW on a map.
Other trade companies in CF24
- New Capital Tyres LtdMotor traders
- Beza Home Climate LtdPlumbers and heating engineers
- Jafa Construction LtdBuilders
- A R Lawn Care & Garden Services LtdLandscapers and gardeners
- RK Asset & Trading Co LtdMotor traders
- ZCC Garage LtdMechanics and garages
- Szot LtdPlasterers
- Oceanway Tyres LtdMechanics and garages
What happens if Eureka Electrical 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 29 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 30 Apr 2027 to 29 May 2027 | £150 |
| 1 to 3 months late | 30 May 2027 to 29 Jul 2027 | £375 |
| 3 to 6 months late | 30 Jul 2027 to 29 Oct 2027 | £750 |
| More than 6 months late | From 30 Oct 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 30 Jul 2027 | £200 |
| 3 months late | 29 Oct 2027 | another £200 |
| 6 months late | 29 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 29 Jul 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
- 07103334
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 14 December 2009 (16 years ago)
- Registered office
- 9 Partridge Road, Roath, Cardiff, South Glamorgan, CF24 3QW
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 29 July (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 July 2025
- Last confirmation statement
- 12 November 2025
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in Cardiff
Other active building contractors registered in Cardiff.
- F B C Interior Design Limited2008
- Facebrick Builders Limited2021
- Falcon Construction Limited2015
- Falcon Three Limited2015
- Flash Passive Fire Protection Ltd2025
- Foley Site Management Limited2017
- Forgewell Construction Limited2025
- Forty Builders Ltd2015
All building contractors in Cardiff · All trades in Cardiff · Builders across the UK
Frequently asked questions
When are Eureka Electrical Ltd's accounts due?
Eureka Electrical Ltd's next accounts are due at Companies House by 29 April 2027 (in 199 days), covering the period to 29 July 2026.
When is Eureka Electrical Ltd's CT600 due?
The CT600 for the period to 29 July 2026 is due at HMRC by 29 July 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 30 April 2027.
Is Eureka Electrical Ltd still trading?
Eureka Electrical 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 Eureka Electrical Ltd do?
Eureka Electrical Ltd is registered under Construction of domestic buildings (SIC 41202).
How old is Eureka Electrical Ltd?
Eureka Electrical Ltd was incorporated on 14 December 2009, 16 years ago.
What is the penalty if Eureka Electrical 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 Eureka Electrical 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.