- Companies
- Specialist contractors
- Cardiff
- Smiths Damp Proofing Ltd
Smiths Damp Proofing Ltd
- Company number
- 14955494
- Incorporated
- 23 Jun 20233 years trading
- Registered office
- PO Box 4385, 14955494 - Companies House Default Address, Cardiff, CF14 8LH
- Nature of business
- Other specialised construction activities n.e.c.
Smiths Damp Proofing Ltd is a 3-year-old private limited company registered in Cardiff, company number 14955494, one of 173 specialist construction companies in Cardiff. Companies House shows its accounts as overdue: they were due on 22 September 2026.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Where Smiths Damp Proofing Ltd is registered
The registered office is in Cardiff (CF14), in the Caerphilly local authority area, Wales. Show CF14 8LH on a map.
Other trade companies in CF14
- Velren Group LtdProperty developers
- Premierroofcare LtdRoofers
- JLG Groundworks LtdCleaning companies
- Tidyvibz LtdCleaning companies
- Ayyappa MTD LtdBuilders
- KM Phoenix Pond, Garden & General Maintenance LtdLandscapers and gardeners
- Eco Green Property Service LtdFinishing trades
- S and J Accident Repairs LtdPainters and decorators
What happens if Smiths Damp Proofing Ltd files late
If the accounts reach Companies House today, the late filing penalty is £150 (£300 if last year's accounts were also late). It rises at each step below.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 23 Sep 2026 to 22 Oct 2026 | £150 |
| 1 to 3 months late | 23 Oct 2026 to 22 Dec 2026 | £375 |
| 3 to 6 months late | 23 Dec 2026 to 22 Mar 2027 | £750 |
| More than 6 months late | From 23 Mar 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 23 Dec 2026 | £200 |
| 3 months late | 22 Mar 2027 | another £200 |
| 6 months late | 22 Jun 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 22 Dec 2027 | 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
- 14955494
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 23 June 2023 (3 years ago)
- Registered office
- PO Box 4385, 14955494 - Companies House Default Address, Cardiff, CF14 8LH
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 26 June (accounting reference date)
- Accounts type
- Unaudited abridged
- Last accounts made up to
- 30 June 2024
- Last confirmation statement
- 22 June 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 Cardiff
Other active specialist construction companies registered in Cardiff.
- Solvic Ltd2024
- Soma Insulation Ltd2016
- Stand Out Installations Ltd2021
- Star Machinery Sales Ltd2016
- Step Ahead Renovations and Design Ltd2025
- Surface Repair South Wales Limited2019
- Sutro Group Ltd2019
- SW Gardens Limited2019
All specialist construction companies in Cardiff · All trades in Cardiff · Specialist contractors across the UK
Frequently asked questions
When are Smiths Damp Proofing Ltd's accounts due?
Smiths Damp Proofing Ltd's accounts were due at Companies House on 22 September 2026 and the register shows them as overdue.
When is Smiths Damp Proofing Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 30 June 2025, due by 30 June 2026, and one for the period to 22 December 2025, due by 22 December 2026. Corporation tax is payable 9 months and 1 day after the end of each.
Is Smiths Damp Proofing Ltd still trading?
Smiths Damp Proofing Ltd is listed as active on the Companies House register (checked 12 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 Smiths Damp Proofing Ltd do?
Smiths Damp Proofing Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Smiths Damp Proofing Ltd?
Smiths Damp Proofing Ltd was incorporated on 23 June 2023, 3 years ago.
What is the penalty if Smiths Damp Proofing 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 Smiths Damp Proofing Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.