- Companies
- Civil engineering
- London
- Arados Associates Ltd
Arados Associates Ltd
- Company number
- 10031856
- Incorporated
- 29 Feb 201610 years trading
- Registered office
- c/o Duboff & Co, Kingsbury House, 468 Church Lane, London, NW9 8UA
- Nature of business
- Construction of railways and underground railways
Arados Associates Ltd is a 10-year-old private limited company registered in London, company number 10031856, one of 1,853 civil engineering contractors in London. Its next accounts are due at Companies House on 29 December 2026, and the CT600 for the period to 29 March 2026 is due at HMRC on 29 March 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 £22K (-15.9%) on the year before, to £114K.
- Net assets rose in 3 of 8 year-on-year comparisons on record.
- Current assets of £116K against £1,932 owed within a year: more than 10 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 9 years, 2017 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 29 Mar 2025 | £114K | £116K | £1,932 | 2 | |
| 29 Mar 2024 | £136K | £138K | £2,676 | 2 | |
| 29 Mar 2023 | £162K | £178K | £17K | 2 | |
| 30 Mar 2022 | £199K | £214K | £16K | 2 | |
| 31 Mar 2021 | £251K | £350K | £100K | 2 | |
| 31 Mar 2020 | £271K | £348K | £348K | £78K | 2 |
| 31 Mar 2019 | £226K | £347K | £120K | ||
| 31 Mar 2018 | £156K | £225K | £69K | ||
| 31 Mar 2017 | £77K | £126K | £50K | 3 |
Where Arados Associates Ltd is registered
The registered office is in London (NW9), in the Brent local authority area, London. Show NW9 8UA on a map.
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What happens if Arados Associates 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 29 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 30 Dec 2026 to 29 Jan 2027 | £150 |
| 1 to 3 months late | 30 Jan 2027 to 29 Mar 2027 | £375 |
| 3 to 6 months late | 30 Mar 2027 to 29 Jun 2027 | £750 |
| More than 6 months late | From 30 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 30 Mar 2027 | £200 |
| 3 months late | 29 Jun 2027 | another £200 |
| 6 months late | 29 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 29 Mar 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
- 10031856
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 29 February 2016 (10 years ago)
- Registered office
- c/o Duboff & Co, Kingsbury House, 468 Church Lane, London, NW9 8UA
- Nature of business
- Construction of railways and underground railways (SIC 42120)
- Year end
- 29 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 29 March 2025
- Last confirmation statement
- 23 February 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.
- Arcform Development Ltd2025
- Arcform Infrastructure Ltd2025
- Ardleigh Group Ltd2026
- Aress Construction Ltd2025
- Arglu Services Ltd2026
- Arhitel Ltd2018
- Ari Engineering Limited2019
- Ariaa Limited2022
All civil engineering contractors in London · All trades in London · Civil engineering across the UK
Frequently asked questions
When are Arados Associates Ltd's accounts due?
Arados Associates Ltd's next accounts are due at Companies House by 29 December 2026 (in 77 days), covering the period to 29 March 2026.
When is Arados Associates Ltd's CT600 due?
The CT600 for the period to 29 March 2026 is due at HMRC by 29 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 30 December 2026.
Is Arados Associates Ltd still trading?
Arados Associates 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 Arados Associates Ltd do?
Arados Associates Ltd is registered under Construction of railways and underground railways (SIC 42120).
How old is Arados Associates Ltd?
Arados Associates Ltd was incorporated on 29 February 2016, 10 years ago.
What is the penalty if Arados Associates 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 Arados Associates 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.