- Companies
- Specialist contractors
- London
- Proair Duct Solutions Limited
Proair Duct Solutions Limited
- Company number
- 17401350
- Incorporated
- 14 Aug 2026
- Registered office
- 108 Riddons Road, London, SE12 9QX
- Nature of business
- Other specialised construction activities n.e.c.
Proair Duct Solutions Limited is a newly incorporated private limited company registered in London, company number 17401350, one of 4,318 specialist construction companies in London. Its next accounts are due at Companies House on 14 May 2028, and its first CT600 is due at HMRC on 13 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 Proair Duct Solutions Limited is registered
The registered office is in London (SE12), in the Lewisham local authority area, London. Show SE12 9QX on a map.
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What happens if Proair Duct Solutions 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 14 May 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 15 May 2028 to 14 Jun 2028 | £150 |
| 1 to 3 months late | 15 Jun 2028 to 14 Aug 2028 | £375 |
| 3 to 6 months late | 15 Aug 2028 to 14 Nov 2028 | £750 |
| More than 6 months late | From 15 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
- 17401350
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 14 August 2026
- Registered office
- 108 Riddons Road, London, SE12 9QX
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 August (accounting reference date)
- Accounts type
- No accounts filed yet
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 London
Other active specialist construction companies registered in London.
- Prodilaps Associates Ltd2025
- Product Freedom Limited2016
- Progenta Ltd2026
- Progressive Property Care Ltd2025
- Project Associates London Ltd2026
- Project Cost Check Ltd2026
- Project Delivery Partners (PDP) Ltd2026
- Project Handyman Ltd2026
All specialist construction companies in London · All trades in London · Specialist contractors across the UK
Frequently asked questions
When are Proair Duct Solutions Limited's accounts due?
Proair Duct Solutions Limited's next accounts are due at Companies House by 14 May 2028 (in 579 days), covering the period to 31 August 2027.
When is Proair Duct Solutions 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 13 August 2027, due by 13 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 Proair Duct Solutions Limited still trading?
Proair Duct Solutions 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 Proair Duct Solutions Limited do?
Proair Duct Solutions Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Proair Duct Solutions Limited?
Proair Duct Solutions Limited was incorporated on 14 August 2026, less than a year ago.
What is the penalty if Proair Duct Solutions 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 Proair Duct Solutions 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.