- Companies
- Finishing trades
- Harrow
- Alldenn Construction Limited
Alldenn Construction Limited
- Company number
- 17406227
- Incorporated
- 18 Aug 2026
- Registered office
- 20 Hutton Lane, Harrow, HA3 6RD
- Nature of business
- Other building completion and finishing
Alldenn Construction Limited is a newly incorporated private limited company registered in Harrow, company number 17406227, one of 251 building finishing companies in Harrow. Its next accounts are due at Companies House on 18 May 2028, and its first CT600 is due at HMRC on 17 August 2028.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Where Alldenn Construction Limited is registered
The registered office is in Harrow (HA3), in the Harrow local authority area, London. Show HA3 6RD on a map.
Other trade companies in HA3
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- Asr234 LimitedCivil engineering
- Shine Bright With NV LtdMechanics and garages
- Direct Sparks LtdMachinery repair and installation
- Meral Decoration & Maintenance LtdPainters and decorators
- Add22 LtdCivil engineering
- Floyd Cleaners LimitedCleaning companies
- Amalia&Ioana LimitedBuilders
Also registered at this address
1 other company uses the same registered office as Alldenn Construction Limited.
- Building Construction LimitedBuilders
What happens if Alldenn Construction 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 18 May 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 19 May 2028 to 18 Jun 2028 | £150 |
| 1 to 3 months late | 19 Jun 2028 to 18 Aug 2028 | £375 |
| 3 to 6 months late | 19 Aug 2028 to 18 Nov 2028 | £750 |
| More than 6 months late | From 19 Nov 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2028 | £200 |
| 3 months late | 30 Nov 2028 | another £200 |
| 6 months late | 28 Feb 2029 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 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
- 17406227
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 18 August 2026
- Registered office
- 20 Hutton Lane, Harrow, HA3 6RD
- Nature of business
- Other building completion and finishing (SIC 43390)
- Year end
- 31 August (accounting reference date)
- Accounts type
- No accounts filed yet
Filing notes for building finishing companies
Finishing trade companies cover a wide range of work. Most are micro-entities with simple accounts and a straightforward CT600.
Similar companies in Harrow
Other active building finishing companies registered in Harrow.
- Aman Building Services Limited2015
- Amp Builder Ltd2021
- Apical Constructions Ltd2016
- Arbotech Ltd2023
- Ark Artisan Limited2023
- Arshi Solutions Ltd2024
- Ashjan Limited2010
- Ask Interiors Limited2002
All building finishing companies in Harrow · All trades in Harrow · Finishing trades across the UK
Frequently asked questions
When are Alldenn Construction Limited's accounts due?
Alldenn Construction Limited's next accounts are due at Companies House by 18 May 2028 (in 583 days), covering the period to 31 August 2027.
When is Alldenn Construction Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 17 August 2027, due by 17 August 2028, and one for the period to 31 August 2027, due by 31 August 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Alldenn Construction Limited still trading?
Alldenn Construction 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 Alldenn Construction Limited do?
Alldenn Construction Limited is registered under Other building completion and finishing (SIC 43390).
How old is Alldenn Construction Limited?
Alldenn Construction Limited was incorporated on 18 August 2026, less than a year ago.
What is the penalty if Alldenn Construction 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 Alldenn Construction 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.