- Company number
- 09503542
- Incorporated
- 23 Mar 201511 years trading
- Registered office
- 127 Oval Road North, Dagenham, RM10 9ER
- Nature of business
- Construction of domestic buildings
Zekon Ltd is a 11-year-old private limited company registered in Dagenham, company number 09503542, one of 681 building contractors in Dagenham. Its next accounts are due at Companies House on 31 December 2027, and the CT600 for the period to 31 March 2027 is due at HMRC on 31 March 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 £29K (+161%) on the year before, to £11K.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £32K against £21K owed within a year: 1.5 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 10 years, 2017 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2026 | £11K | £32K | £21K | 1 | |
| 31 Mar 2025 | -£18K | £8,134 | 1 | ||
| 31 Mar 2024 | -£28K | £4,083 | 1 | ||
| 31 Mar 2023 | £30K | £11K | 1 | ||
| 30 Sep 2022 | £11K | £11K | 1 | ||
| 30 Sep 2021 | £19K | £19K | 1 | ||
| 30 Sep 2020 | £17K | £17K | 3 | ||
| 30 Sep 2019 | £22K | £22K | £22K | 7 | |
| 30 Sep 2018 | £1 | ||||
| 31 Mar 2017 | £499 | £34K | £34K |
Where Zekon Ltd is registered
The registered office is in Dagenham (RM10), in the Barking and Dagenham local authority area, London. Show RM10 9ER on a map.
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- Dagenham Plumbers LtdPlumbers and heating engineers
- MK25 Build LtdBuilders
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- Ek Drywall LtdBuilders
- Gmi&Fvi Construction LtdCivil engineering
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Also registered at this address
1 other company uses the same registered office as Zekon Ltd.
- Zekon Investments LtdBuilders
What happens if Zekon 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 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2028 to 31 Jan 2028 | £150 |
| 1 to 3 months late | 1 Feb 2028 to 31 Mar 2028 | £375 |
| 3 to 6 months late | 1 Apr 2028 to 30 Jun 2028 | £750 |
| More than 6 months late | From 1 Jul 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 09503542
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 23 March 2015 (11 years ago)
- Registered office
- 127 Oval Road North, Dagenham, RM10 9ER
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2026
- Last confirmation statement
- 22 August 2026
- Charges (mortgages)
- 1 outstanding of 1 registered
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 Dagenham
Other active building contractors registered in Dagenham.
- Zigzac Construction Ltd2019
- Zizo08 Limited2022
- ZM Prime Ltd2026
- 123Electrical Ltd2026
- 1ST Investment Properties Ltd2011
- 413Build Ltd2025
- 5P Workforce Ltd Ltd2026
- A Construct Ltd2017
All building contractors in Dagenham · All trades in Dagenham · Builders across the UK
Frequently asked questions
When are Zekon Ltd's accounts due?
Zekon Ltd's next accounts are due at Companies House by 31 December 2027 (in 445 days), covering the period to 31 March 2027.
When is Zekon Ltd's CT600 due?
The CT600 for the period to 31 March 2027 is due at HMRC by 31 March 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2028.
Is Zekon Ltd still trading?
Zekon 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 Zekon Ltd do?
Zekon Ltd is registered under Construction of domestic buildings (SIC 41202).
How old is Zekon Ltd?
Zekon Ltd was incorporated on 23 March 2015, 11 years ago.
What is the penalty if Zekon 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 Zekon 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.