- Companies
- Specialist contractors
- Littlehampton
- Alpha Door Solutions Ltd
Alpha Door Solutions Ltd
- Company number
- 15437953
- Incorporated
- 24 Jan 20242 years trading
- Registered office
- The Boathouse Lyminster Road, Lyminster, Littlehampton, West Sussex, BN17 7QQ
- Nature of business
- Other specialised construction activities n.e.c.
Alpha Door Solutions Ltd is a 2-year-old private limited company registered in Littlehampton, company number 15437953, one of 22 specialist construction companies in Littlehampton. Its next accounts are due at Companies House on 31 October 2026, and the CT600 for the period to 31 January 2026 is due at HMRC on 31 January 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 January 2025, as filed at Companies House.
Where Alpha Door Solutions Ltd is registered
The registered office is in Littlehampton (BN17), in the Arun local authority area, South East. Show BN17 7QQ on a map.
Other trade companies in BN17
- The Specialist Car Centre LtdMotor traders
- Flow Bros LtdPlumbers and heating engineers
- Garlands Engineering LtdElectricians
- Castle View P&H LtdPlumbers and heating engineers
- Meridian Pipework Services LtdPlumbers and heating engineers
- Sussex Brown Sparks LtdElectricians
- Coastal Construction and Carpentry LtdBuilders
- Arch Enclosures UK LtdInstallers
What happens if Alpha Door Solutions 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 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2026 to 30 Nov 2026 | £150 |
| 1 to 3 months late | 1 Dec 2026 to 31 Jan 2027 | £375 |
| 3 to 6 months late | 1 Feb 2027 to 30 Apr 2027 | £750 |
| More than 6 months late | From 1 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 31 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 15437953
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 24 January 2024 (2 years ago)
- Registered office
- The Boathouse Lyminster Road, Lyminster, Littlehampton, West Sussex, BN17 7QQ
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 January (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 January 2025
- Last confirmation statement
- 3 February 2026
Filing notes for specialist construction companies
Specialist contractors often work under CIS for main contractors. Retentions held back by the customer still count towards turnover once the work is done.
Similar companies in Littlehampton
Other active specialist construction companies registered in Littlehampton.
- Arch Enclosures Limited2011
- Arun Pumpcrete Limited2017
- Bliss Contracts Limited2025
- CT Eco Plus Limited2014
- D.V.R. Construction Services Limited1975
- Inside Out Interiors Limited2025
- LRF Services Ltd2024
- M & R Stoneworks Ltd2017
All specialist construction companies in Littlehampton · All trades in Littlehampton · Specialist contractors across the UK
Frequently asked questions
When are Alpha Door Solutions Ltd's accounts due?
Alpha Door Solutions Ltd's next accounts are due at Companies House by 31 October 2026 (in 19 days), covering the period to 31 January 2026.
When is Alpha Door Solutions Ltd's CT600 due?
The CT600 for the period to 31 January 2026 is due at HMRC by 31 January 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 November 2026.
Is Alpha Door Solutions Ltd still trading?
Alpha Door Solutions 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 Alpha Door Solutions Ltd do?
Alpha Door Solutions Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Alpha Door Solutions Ltd?
Alpha Door Solutions Ltd was incorporated on 24 January 2024, 2 years ago.
What is the penalty if Alpha Door Solutions 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 Alpha Door Solutions 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.