- Company number
- 04563754
- Incorporated
- 15 Oct 200223 years trading
- Registered office
- Unit 1 A2B House, Atlantic Trading Estate, Barry, Vale Of Glamorgan, CF63 3RF
- Nature of business
- Construction of domestic buildings; Construction of other civil engineering projects n.e.c.
SMK Building and Maintenance Limited is a 23-year-old private limited company registered in Barry, company number 04563754, one of 35 building contractors in Barry. 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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Finances
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 up £273K (+26.7%) on the year before, to £1.3M.
- Net assets rose in 3 of 6 year-on-year comparisons on record.
- Current assets of £1.8M against £566K owed within a year: 3.3 times cover.
- 32 employees on average, down from 38 the year before.
- Balance sheets on record for 8 years, 2015 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £1.3M | £1.4M | £1.8M | £566K | 32 |
| 31 Mar 2024 | £1M | £674K | £1.4M | £416K | 38 |
| 31 Mar 2023 | £1.1M | £1M | £1.5M | £452K | 38 |
| 31 Mar 2022 | £1.1M | £837K | £1.4M | £342K | 39 |
| 31 Mar 2021 | £1.4M | £618K | £1.5M | £227K | 38 |
| 31 Mar 2020 | £1.8M | £1.2M | £2.1M | £384K | 38 |
| 31 Mar 2016 | £1.3M | £406K | £2M | £712K | |
| 31 Mar 2015 | £1.3M | £925K | £1.6M | £429K |
Public contracts won
SMK Building and Maintenance Limited has 2 public sector contract awards on record; the ones with their own published value total £3.6M (2026). Source: Contracts Finder and Find a Tender award notices. 1 of these were matched by the company's exact name because the notice gave no company number.
Awards by year
Main buyers
- Vale of Glamorgan Council2 awards
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Vale of Glamorgan Council | Kitchen, bathroom, wet room, and electricals upgrades and associated works to various properties throughout the Vale of Glamorgan | £3.5M | 21 Jul 2026 |
| Vale of Glamorgan Council | Internal Refurbishment Works at 2 Burley Place, St Athens | £120K | 15 Jan 2026 |
Where SMK Building and Maintenance Limited is registered
The registered office is in Barry (CF63), in the Vale of Glamorgan local authority area, Wales. Show CF63 3RF on a map.
Other trade companies in CF63
- A Class Renovations and Maintenance LtdBuilders
- Vaddempudi LtdCleaning companies
- G Altea Properties LtdProperty developers
- D T Smith and Grandsons LtdProperty developers
- Cardiff Road Car Detailling LtdCleaning companies
- Coast to Coast Coatings LtdPainters and decorators
- JF Coatings LtdPainters and decorators
- Onestop Automotive Vale LtdMachinery repair and installation
Also registered at this address
1 other company uses the same registered office as SMK Building and Maintenance Limited.
- SMK Renovate LimitedFinishing trades
What happens if SMK Building and Maintenance 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 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
- 04563754
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 15 October 2002 (23 years ago)
- Registered office
- Unit 1 A2B House, Atlantic Trading Estate, Barry, Vale Of Glamorgan, CF63 3RF
- Nature of business
- Construction of domestic buildings (SIC 41202)
Construction of other civil engineering projects n.e.c. (SIC 42990) - Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 15 October 2025
- Charges (mortgages)
- 1 outstanding of 2 registered
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in Barry
Other active building contractors registered in Barry.
- Smooth Decorators Ltd2024
- The Priority Organisation Limited2017
- Tiny DIY Ltd2024
- TJG Developments (Whips) Limited2024
- TJG Enterprises Limited2011
- Trikon Dev Ltd2023
- VBR Builders Ltd2026
- 10B Property Ltd2019
All building contractors in Barry · All trades in Barry · Builders across the UK
Frequently asked questions
When are SMK Building and Maintenance Limited's accounts due?
SMK Building and Maintenance Limited's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is SMK Building and Maintenance Limited'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 SMK Building and Maintenance Limited still trading?
SMK Building and Maintenance 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 SMK Building and Maintenance Limited do?
SMK Building and Maintenance Limited is registered under Construction of domestic buildings (SIC 41202); Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is SMK Building and Maintenance Limited?
SMK Building and Maintenance Limited was incorporated on 15 October 2002, 23 years ago.
Has SMK Building and Maintenance Limited won public sector contracts?
Yes. SMK Building and Maintenance Limited has 2 contract awards from public bodies on Contracts Finder and Find a Tender (those with their own published value total £3.6M), most recently from Vale of Glamorgan Council.
What is the penalty if SMK Building and Maintenance 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 SMK Building and Maintenance 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.