- Company number
- 06806017
- Incorporated
- 30 Jan 200917 years trading
- Registered office
- 3 Worsley Road, London, E11 3JL
- Nature of business
- Construction of domestic buildings
Denko Building Services Ltd is a 17-year-old private limited company registered in London, company number 06806017, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 31 October 2027, and the CT600 for the period to 31 January 2027 is due at HMRC on 31 January 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 £1,153 (+19.6%) on the year before, to £7,047.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £14K against £7,402 owed within a year: 2.0 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 Jan 2026 | £7,047 | £14K | £7,402 | 1 | |
| 31 Jan 2025 | £5,894 | £782 | £6,758 | £864 | 1 |
| 31 Jan 2024 | £7,743 | £5,431 | £8,346 | £603 | 1 |
| 31 Jan 2023 | £9,550 | £6,309 | £11K | £1,245 | 1 |
| 31 Jan 2022 | £8,310 | £8,127 | £12K | £3,587 | 1 |
| 31 Jan 2021 | £9,993 | £16K | £20K | £10K | 1 |
| 31 Jan 2020 | £6,287 | £5,626 | £9,590 | £3,303 | 1 |
| 31 Jan 2019 | £4,817 | £4,973 | £9,641 | £4,824 | |
| 31 Jan 2018 | £6,582 | £3,566 | £7,484 | £902 | |
| 31 Jan 2017 | £6,453 | £6,201 | £7,990 | £1,537 |
Who runs and owns Denko Building Services Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| D*** C*** | Director | Jan 2009 |
Person with significant control
Where Denko Building Services Ltd is registered
The registered office is in London (E11), in the Waltham Forest local authority area, London. Show E11 3JL on a map.
Other trade companies in E11
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- Bensliman Services LimitedPlumbers and heating engineers
- Myhomerenew Ltd LtdPlasterers
- Velaron LtdProperty developers
- Hakk Technical Services LtdInstallers
- Meycarwash LtdCleaning companies
- Rose Ave LtdProperty developers
What happens if Denko Building Services 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 October 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2027 to 30 Nov 2027 | £150 |
| 1 to 3 months late | 1 Dec 2027 to 31 Jan 2028 | £375 |
| 3 to 6 months late | 1 Feb 2028 to 30 Apr 2028 | £750 |
| More than 6 months late | From 1 May 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2028 | £200 |
| 3 months late | 30 Apr 2028 | another £200 |
| 6 months late | 31 Jul 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 06806017
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 30 January 2009 (17 years ago)
- Registered office
- 3 Worsley Road, London, E11 3JL
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 31 January (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 January 2026
- Last confirmation statement
- 30 January 2026
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 London
Other active building contractors registered in London.
- Denn Builders Ltd2025
- Dennis Rose Ltd2026
- Denspeed Ltd2022
- Dental Design and Build Limited2026
- Denvav Limited2026
- Denzil & Co Limited2021
- Deons Construction Ltd2025
- Depa Property Services Ltd2024
All building contractors in London · All trades in London · Builders across the UK
Frequently asked questions
When are Denko Building Services Ltd's accounts due?
Denko Building Services Ltd's next accounts are due at Companies House by 31 October 2027 (in 384 days), covering the period to 31 January 2027.
When is Denko Building Services Ltd's CT600 due?
The CT600 for the period to 31 January 2027 is due at HMRC by 31 January 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 November 2027.
Is Denko Building Services Ltd still trading?
Denko Building Services 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 Denko Building Services Ltd do?
Denko Building Services Ltd is registered under Construction of domestic buildings (SIC 41202).
How old is Denko Building Services Ltd?
Denko Building Services Ltd was incorporated on 30 January 2009, 17 years ago.
Who runs Denko Building Services Ltd?
Denko Building Services Ltd has 1 active director, the longest-serving appointed in Jan 2009. Their names and service addresses are on the Companies House register.
Who owns Denko Building Services Ltd?
One person or company has significant control of Denko Building Services Ltd: an individual (owns 75% or more of the shares).
What is the penalty if Denko Building Services 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 Denko Building Services 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.