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- Mark Irwin Electrical Ltd
Company profile · Electricians
Mark Irwin Electrical Ltd
Mark Irwin Electrical Ltd is a 3-year-old private limited company registered in Limavady, company number NI694346, one of 20 electrical contractors in Limavady. 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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Financial snapshot, 2025
From the balance sheet at 31 March 2025, as filed at Companies House.
Mark Irwin Electrical Ltd over the years
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 up £114K (+143%) on the year before, to £194K.
- Current assets of £296K against £190K owed within a year: 1.6 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 2 years, 2024 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £194K | £146K | £296K | £190K | 0 |
| 31 Mar 2024 | £80K | £148K | £184K | £164K | 12 |
Where Mark Irwin Electrical Ltd is registered
The registered office is in Limavady (BT49), in the Causeway Coast and Glens local authority area, Northern Ireland. Show BT49 0QZ on a map.
Other trade companies in BT49
- Ohara Vehicle Services LtdMechanics and garages
- Davenport Coring and Demolition LtdGroundworks and demolition
- CM Design (Limavady) LimitedJoiners and carpenters
- Barrcap LtdBuilders
- Wblrc LtdProperty developers
- Eu Net-Zero Construction Group LtdSpecialist contractors
- RJ Martin LimitedProperty developers
- Farloe LtdProperty developers
What happens if Mark Irwin 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 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
- NI694346
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 8 February 2023 (3 years ago)
- Registered office
- 42 Windyhill Road, Limavady, BT49 0QZ
- 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
- 7 February 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 Limavady
Other active electrical contractors registered in Limavady.
- McGurk Electrics Ltd2015
- MCN Electrical Ltd2025
- Mullan Engineering Limited2025
- New View Electrical Ltd2025
- North West Electrical Compliance Ltd2021
- P & L Electrics (M&E) Limited2006
- Tes Contracts (NI) Ltd2014
- W Beckett Electrical Ltd2026
All electrical contractors in Limavady · All trades in Limavady · Electricians across the UK
Frequently asked questions
When are Mark Irwin Electrical Ltd's accounts due?
Mark Irwin Electrical Ltd's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is Mark Irwin Electrical Ltd'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 Mark Irwin Electrical Ltd still trading?
Mark Irwin 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 Mark Irwin Electrical Ltd do?
Mark Irwin Electrical Ltd is registered under Electrical installation (SIC 43210).
How old is Mark Irwin Electrical Ltd?
Mark Irwin Electrical Ltd was incorporated on 8 February 2023, 3 years ago.
What is the penalty if Mark Irwin 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 Mark Irwin 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.