- Companies
- Electricians
- Durham
- Sean Brennan Electrical Limited
Sean Brennan Electrical Limited
- Company number
- 13545458
- Incorporated
- 3 Aug 20215 years trading
- Registered office
- Esh Winning Magnolia Court, Esh Winning, Durham, DH7 9NY
- Nature of business
- Electrical installation
Sean Brennan Electrical Limited is a 5-year-old private limited company registered in Durham, company number 13545458, one of 46 electrical contractors in Durham. Its next accounts are due at Companies House on 31 May 2028, and the CT600 for the period to 31 August 2027 is due at HMRC on 31 August 2028.
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 up £4,877 (+463.2%) on the year before, to £5,930.
- Net assets rose in 3 of 4 year-on-year comparisons on record.
- Current assets of £8,963 against £4,085 owed within a year: 2.2 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 5 years, 2022 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Aug 2026 | £5,930 | £7,267 | £8,963 | £4,085 | 1 |
| 31 Aug 2025 | £1,053 | £91 | £11K | £11K | 1 |
| 31 Aug 2024 | £11K | £770 | £27K | £15K | 1 |
| 31 Aug 2023 | £6,919 | £105 | £16K | £9,351 | 1 |
| 31 Aug 2022 | £2,195 | £117 | £9,318 | £6,750 | 1 |
Where Sean Brennan Electrical Limited is registered
The registered office is in Durham (DH7), in the County Durham local authority area, North East. Show DH7 9NY on a map.
Other trade companies in DH7
- Kenny's Groundworks LimitedCivil engineering
- Fastfit Automotive LimitedMechanics and garages
- Adobe Builders LtdFinishing trades
- Unlimited Labs LtdCivil engineering
- HLS Domestic Installations LtdInstallers
- J Moore Brickwork LtdBuilders
- Signature Developments (Ne) LtdBuilders
- D.R Groundworks & Landscaping Services LtdBuilders
What happens if Sean Brennan 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 May 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jun 2028 to 30 Jun 2028 | £150 |
| 1 to 3 months late | 1 Jul 2028 to 31 Aug 2028 | £375 |
| 3 to 6 months late | 1 Sep 2028 to 30 Nov 2028 | £750 |
| More than 6 months late | From 1 Dec 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2028 | £200 |
| 3 months late | 30 Nov 2028 | another £200 |
| 6 months late | 28 Feb 2029 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 2029 | 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
- 13545458
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 3 August 2021 (5 years ago)
- Registered office
- Esh Winning Magnolia Court, Esh Winning, Durham, DH7 9NY
- Nature of business
- Electrical installation (SIC 43210)
- Year end
- 31 August (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 August 2026
- Last confirmation statement
- 2 August 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 Durham
Other active electrical contractors registered in Durham.
- SK Electrics Ltd2026
- Sleetburn Electrical Services Ltd2024
- Sneddon and Richardson Limited1964
- SRG Electrical Compliance Services Ltd2021
- TM Electrical Ne Limited2025
- Total Electrical Solutions Limited2008
- Transit Electronics Limited2012
- Active Electrical Services (N.E.) Limited2010
All electrical contractors in Durham · All trades in Durham · Electricians across the UK
Frequently asked questions
When are Sean Brennan Electrical Limited's accounts due?
Sean Brennan Electrical Limited's next accounts are due at Companies House by 31 May 2028 (in 596 days), covering the period to 31 August 2027.
When is Sean Brennan Electrical Limited's CT600 due?
The CT600 for the period to 31 August 2027 is due at HMRC by 31 August 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 June 2028.
Is Sean Brennan Electrical Limited still trading?
Sean Brennan 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 Sean Brennan Electrical Limited do?
Sean Brennan Electrical Limited is registered under Electrical installation (SIC 43210).
How old is Sean Brennan Electrical Limited?
Sean Brennan Electrical Limited was incorporated on 3 August 2021, 5 years ago.
What is the penalty if Sean Brennan 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 Sean Brennan 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.