- Companies
- Electricians
- Lisburn
- J Dunn Electrical Limited
J Dunn Electrical Limited
- Company number
- NI660358
- Incorporated
- 4 Apr 20197 years trading
- Registered office
- At the Offices of Cartmill Stewart LLP, Bachelors Walk, Lisburn, BT28 1XN
- Nature of business
- Electrical installation
J Dunn Electrical Limited is a 7-year-old private limited company registered in Lisburn, company number NI660358, one of 27 electrical contractors in Lisburn. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 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 £5,776 (-20.2%) on the year before, to £23K.
- Net assets rose in 3 of 5 year-on-year comparisons on record.
- Current assets of £39K against £25K owed within a year: 1.6 times cover.
- 3 employees on average, up from 2 the year before.
- Balance sheets on record for 6 years, 2020 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £23K | £29K | £39K | £25K | 3 |
| 31 Mar 2024 | £29K | £38K | £51K | £33K | 2 |
| 31 Mar 2023 | £19K | £32K | £40K | £34K | 3 |
| 31 Mar 2022 | £9,457 | £19K | £32K | 3 | |
| 30 Apr 2021 | £21K | £31K | £36K | 3 | |
| 30 Apr 2020 | £19K | £20K | £30K | 3 |
Where J Dunn Electrical Limited is registered
The registered office is in Lisburn (BT28), in the Lisburn and Castlereagh local authority area, Northern Ireland. Show BT28 1XN on a map.
Other trade companies in BT28
- Lisburn Autohub LtdMotor traders
- Ultralift Facilities Management LtdFacilities management
- Ultimate Tinting Lisburn LtdMotor traders
- A H Assist Cars LtdMotor traders
- Northpeak Developments LtdProperty developers
- Built by D Design and Build LtdProperty developers
- Lagan to Liffey Electrical Contractors LtdElectricians
- Ez Trade Solutions LtdJoiners and carpenters
What happens if J Dunn Electrical 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- NI660358
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 4 April 2019 (7 years ago)
- Registered office
- At the Offices of Cartmill Stewart LLP, Bachelors Walk, Lisburn, BT28 1XN
- Nature of business
- Electrical installation (SIC 43210)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 3 April 2026
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 Lisburn
Other active electrical contractors registered in Lisburn.
- Lagan to Liffey Electrical Contractors Ltd2026
- Lisburn Electrical Contracts Limited2020
- Northside Construction (2016) Ltd2016
- P & E Solutions (NI) Ltd2012
- P C Electrical (2016) Ltd2016
- PMC Electrical (2022) Ltd2022
- RW Electrical Contracts Limited2025
- Solarmix Ltd2026
All electrical contractors in Lisburn · All trades in Lisburn · Electricians across the UK
Frequently asked questions
When are J Dunn Electrical Limited's accounts due?
J Dunn Electrical Limited's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is J Dunn Electrical Limited's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is J Dunn Electrical Limited still trading?
J Dunn Electrical 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 J Dunn Electrical Limited do?
J Dunn Electrical Limited is registered under Electrical installation (SIC 43210).
How old is J Dunn Electrical Limited?
J Dunn Electrical Limited was incorporated on 4 April 2019, 7 years ago.
What is the penalty if J Dunn Electrical 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 J Dunn Electrical 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.