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- Deks Limited
Company profile · Civil engineering
Deks Limited
Deks Limited is a 5-year-old private limited company registered in London, company number 13031184, one of 1,853 civil engineering contractors in London. Its next accounts are due at Companies House on 31 August 2027, and the CT600 for the period to 30 November 2026 is due at HMRC on 30 November 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 30 November 2025, as filed at Companies House.
Deks Limited 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 down £1,290 (-53.6%) on the year before, to £1,116.
- Net assets rose in 2 of 4 year-on-year comparisons on record.
- Current assets of £23K against £22K owed within a year: 1.0 times cover.
- 1 employee on average, up from 0 the year before.
- Balance sheets on record for 5 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Nov 2025 | £1,116 | £306 | £23K | £22K | 1 |
| 30 Nov 2024 | £2,406 | £91 | £10K | £8,898 | 0 |
| 30 Nov 2023 | £452 | £5,869 | 0 | ||
| 30 Nov 2022 | -£654 | £654 | 0 | ||
| 30 Nov 2021 | £1 | £0 | £1 | 0 |
Where Deks Limited is registered
The registered office is in London (WC2A), in the City of London local authority area, London. Show WC2A 1HR on a map.
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Shared registered office
173 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if Deks 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 August 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Sep 2027 to 30 Sep 2027 | £150 |
| 1 to 3 months late | 1 Oct 2027 to 30 Nov 2027 | £375 |
| 3 to 6 months late | 1 Dec 2027 to 29 Feb 2028 | £750 |
| More than 6 months late | From 1 Mar 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Dec 2027 | £200 |
| 3 months late | 29 Feb 2028 | another £200 |
| 6 months late | 30 May 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Nov 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
- 13031184
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 19 November 2020 (5 years ago)
- Registered office
- Suite G04, 1 Quality Court, Chancery Lane, London, WC2A 1HR
- Nature of business
- Construction of roads and motorways (SIC 42110)
Construction of utility projects for fluids (SIC 42210)
Construction of water projects (SIC 42910) - Year end
- 30 November (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 November 2025
- Last confirmation statement
- 2 December 2025
- Previous names
- DSK Brand Limited (until 28 Feb 2024)
Filing notes for civil engineering contractors
Civil engineering contractors usually carry plant and machinery, so capital allowances (the annual investment allowance and the main pool) do much of the work in the corporation tax computation.
Similar companies in London
Other active civil engineering contractors registered in London.
- Delseb Ltd2018
- Delta Energy Consultancy Limited2016
- Delta Services Ltd2009
- Dem Infrastructure Engineering Ltd2019
- Demirel Facade Design and Management Ltd2019
- Demon Ltd2015
- Dengie Marshes Wind Farm Limited2024
- Deris Service Ltd2022
All civil engineering contractors in London · All trades in London · Civil engineering across the UK
Frequently asked questions
When are Deks Limited's accounts due?
Deks Limited's next accounts are due at Companies House by 31 August 2027 (in 323 days), covering the period to 30 November 2026.
When is Deks Limited's CT600 due?
The CT600 for the period to 30 November 2026 is due at HMRC by 30 November 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 September 2027.
Is Deks Limited still trading?
Deks 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 Deks Limited do?
Deks Limited is registered under Construction of roads and motorways (SIC 42110); Construction of utility projects for fluids (SIC 42210); Construction of water projects (SIC 42910).
How old is Deks Limited?
Deks Limited was incorporated on 19 November 2020, 5 years ago.
What is the penalty if Deks 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 Deks 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.