- Companies
- Civil engineering
- London
- Dideco Limited
Dideco Limited
- Company number
- 10881240
- Incorporated
- 24 Jul 20179 years trading
- Registered office
- 26 Mavern Road, Nexus Court, London, NW6 5AT
- Nature of business
- Construction of other civil engineering projects n.e.c.
Dideco Limited is a 9-year-old private limited company registered in London, company number 10881240, one of 1,853 civil engineering contractors in London. Its next accounts are due at Companies House on 9 February 2027, and the CT600 for the period to 9 May 2026 is due at HMRC on 9 May 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 down £5,550 (-98.2%) on the year before, to £100.
- Net assets rose in 2 of 7 year-on-year comparisons on record.
- 1 employee on average, down from 2 the year before.
- Balance sheets on record for 8 years, 2018 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 9 May 2025 | £100 | £0 | £352 | 1 | |
| 9 May 2024 | £5,650 | £15K | £11K | 2 | |
| 9 May 2023 | -£1,117 | £7,524 | £9,983 | 2 | |
| 9 May 2022 | £4,675 | £8,534 | £4,704 | 2 | |
| 9 May 2021 | -£4,278 | £4,679 | 2 | ||
| 31 Jul 2020 | £100 | ||||
| 31 Jul 2019 | £100 | £1 | |||
| 31 Jul 2018 | £100 | £1 |
Where Dideco Limited is registered
The registered office is in London (NW6), in the Brent local authority area, London. Show NW6 5AT on a map.
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What happens if Dideco 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 9 February 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 10 Feb 2027 to 9 Mar 2027 | £150 |
| 1 to 3 months late | 10 Mar 2027 to 9 May 2027 | £375 |
| 3 to 6 months late | 10 May 2027 to 9 Aug 2027 | £750 |
| More than 6 months late | From 10 Aug 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 10 May 2027 | £200 |
| 3 months late | 9 Aug 2027 | another £200 |
| 6 months late | 9 Nov 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 9 May 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
- 10881240
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 24 July 2017 (9 years ago)
- Registered office
- 26 Mavern Road, Nexus Court, London, NW6 5AT
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 9 May (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 9 May 2025
- Last confirmation statement
- 3 May 2026
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.
- Digitaltobe Limited2014
- Dimaraz Construction Ltd2018
- Div Groundwork Ltd2021
- Dko Engineering Ltd2026
- DKRS Services Limited2025
- Dlumaring Limited2021
- Dmatthews Limited2025
- DMN Construction & Co Ltd2019
All civil engineering contractors in London · All trades in London · Civil engineering across the UK
Frequently asked questions
When are Dideco Limited's accounts due?
Dideco Limited's next accounts are due at Companies House by 9 February 2027 (in 120 days), covering the period to 9 May 2026.
When is Dideco Limited's CT600 due?
The CT600 for the period to 9 May 2026 is due at HMRC by 9 May 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 10 February 2027.
Is Dideco Limited still trading?
Dideco 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 Dideco Limited do?
Dideco Limited is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is Dideco Limited?
Dideco Limited was incorporated on 24 July 2017, 9 years ago.
What is the penalty if Dideco 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 Dideco 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.