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- Civil engineering
- Harrow
- Aalp Ltd
Company profile · Civil engineering
Aalp Ltd
Aalp Ltd is a 7-year-old private limited company registered in Harrow, company number 11967675, one of 121 civil engineering contractors in Harrow. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 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 31 March 2025, as filed at Companies House.
Aalp Ltd 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 £23K (-41.1%) on the year before, to £32K.
- Net assets rose in 3 of 5 year-on-year comparisons on record.
- Current assets of £37K against £4,400 owed within a year: 8.5 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 6 years, 2020 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £32K | £37K | £4,400 | 1 | |
| 31 Mar 2024 | £55K | £55K | £935 | 1 | |
| 31 Mar 2023 | £54K | £66K | £16K | 1 | |
| 31 Mar 2022 | £27K | £36K | £10K | 1 | |
| 31 Mar 2021 | £10K | £13K | £6,511 | 1 | |
| 31 Mar 2020 | £36K | £47K | £14K | 1 |
Where Aalp Ltd is registered
The registered office is in Harrow (HA3), in the Harrow local authority area, London. Show HA3 6LR on a map.
Other trade companies in HA3
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What happens if Aalp 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 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 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
- 11967675
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 29 April 2019 (7 years ago)
- Registered office
- 27 Whittlesea Road, Harrow, HA3 6LR
- Nature of business
- Construction of railways and underground railways (SIC 42120)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 28 April 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 Harrow
Other active civil engineering contractors registered in Harrow.
- Aarthy Construction Ltd2016
- Above & Beyond TM Ltd2025
- Abr Construction Services Limited2024
- Abt Resourcing Limited2017
- Acc Group 1 Ltd2026
- Ad Tech Ltd2023
- Add22 Ltd2026
- Aegean Diving Services Limited2011
All civil engineering contractors in Harrow · All trades in Harrow · Civil engineering across the UK
Frequently asked questions
When are Aalp Ltd's accounts due?
Aalp Ltd's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is Aalp Ltd's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Aalp Ltd still trading?
Aalp 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 Aalp Ltd do?
Aalp Ltd is registered under Construction of railways and underground railways (SIC 42120).
How old is Aalp Ltd?
Aalp Ltd was incorporated on 29 April 2019, 7 years ago.
What is the penalty if Aalp 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 Aalp 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.