- Companies
- Electricians
- Greenford
- Bartkowski Ltd
Bartkowski Ltd
- Company number
- 13679043
- Incorporated
- 14 Oct 20214 years trading
- Registered office
- 117B Whitton Avenue East, Greenford, UB6 0QE
- Nature of business
- Electrical installation; Other engineering activities
Bartkowski Ltd is a 4-year-old private limited company registered in Greenford, company number 13679043, one of 53 electrical contractors in Greenford. Its next accounts are due at Companies House on 31 July 2027, and the CT600 for the period to 31 October 2026 is due at HMRC on 31 October 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 up £37K (+704.5%) on the year before, to £42K.
- Net assets rose in 2 of 3 year-on-year comparisons on record.
- Current assets of £55K against £39K owed within a year: 1.4 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 4 years, 2022 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Oct 2025 | £42K | £55K | £55K | £39K | 1 |
| 31 Oct 2024 | £5,187 | £37K | £39K | 1 | |
| 31 Oct 2023 | £6,895 | £3,969 | £7,580 | 1 | |
| 31 Oct 2022 | £6,551 | £8,923 | £2,372 | 0 |
Where Bartkowski Ltd is registered
The registered office is in Greenford (UB6), in the Ealing local authority area, London. Show UB6 0QE on a map.
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What happens if Bartkowski 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 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Aug 2027 to 31 Aug 2027 | £150 |
| 1 to 3 months late | 1 Sep 2027 to 31 Oct 2027 | £375 |
| 3 to 6 months late | 1 Nov 2027 to 31 Jan 2028 | £750 |
| More than 6 months late | From 1 Feb 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2027 | £200 |
| 3 months late | 31 Jan 2028 | another £200 |
| 6 months late | 30 Apr 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Oct 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
- 13679043
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 14 October 2021 (4 years ago)
- Registered office
- 117B Whitton Avenue East, Greenford, UB6 0QE
- Nature of business
- Electrical installation (SIC 43210)
Other engineering activities (SIC 71129) - Year end
- 31 October (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 October 2025
- Last confirmation statement
- 13 October 2025
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 Greenford
Other active electrical contractors registered in Greenford.
- Bartmanski Electrical Services Ltd2015
- Bracknell Electrix Limited2015
- DB Electrical & Plumbing Ltd2026
- Devonoak Electrical Limited2008
- Digi E-Commerce Ltd2019
- DP Electrician Ltd2026
- Durrant Electrical Mechanical Services Limited2015
- Ealing Electrical Ltd2026
All electrical contractors in Greenford · All trades in Greenford · Electricians across the UK
Frequently asked questions
When are Bartkowski Ltd's accounts due?
Bartkowski Ltd's next accounts are due at Companies House by 31 July 2027 (in 291 days), covering the period to 31 October 2026.
When is Bartkowski Ltd's CT600 due?
The CT600 for the period to 31 October 2026 is due at HMRC by 31 October 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 August 2027.
Is Bartkowski Ltd still trading?
Bartkowski 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 Bartkowski Ltd do?
Bartkowski Ltd is registered under Electrical installation (SIC 43210); Other engineering activities (SIC 71129).
How old is Bartkowski Ltd?
Bartkowski Ltd was incorporated on 14 October 2021, 4 years ago.
What is the penalty if Bartkowski 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 Bartkowski 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.