- Companies
- Builders
- Merthyr Tydfil
- Diamond Quality Ltd
Diamond Quality Ltd
- Company number
- 16614743
- Incorporated
- 29 Jul 20251 year trading
- Registered office
- 76 High Street, Dowlais Top, Merthyr Tydfil, CF48 3PW
- Nature of business
- Construction of domestic buildings; Other building completion and finishing; Retail sale via mail order houses or via Internet
Diamond Quality Ltd is a 1-year-old private limited company registered in Merthyr Tydfil, company number 16614743, one of 39 building contractors in Merthyr Tydfil. Its next accounts are due at Companies House on 29 April 2027, and its first CT600 is due at HMRC on 28 July 2027.
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 Diamond Quality Ltd is registered
The registered office is in Merthyr Tydfil (CF48), in the Merthyr Tydfil local authority area, Wales. Show CF48 3PW on a map.
Other trade companies in CF48
- Valley Roofing Building & Carpentry LimitedRoofers
- Ajl Rail/Civil Engineering LtdCivil engineering
- M&K Valeting LtdCleaning companies
- Mdgroundworks LtdGroundworks and demolition
- Craig Lloyd Groundworks LtdCivil engineering
- Noarc Electrical LtdElectricians
- Elt Brickwork LimitedBuilders
- JBH Decorating LimitedPainters and decorators
What happens if Diamond Quality 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 29 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 30 Apr 2027 to 29 May 2027 | £150 |
| 1 to 3 months late | 30 May 2027 to 29 Jul 2027 | £375 |
| 3 to 6 months late | 30 Jul 2027 to 29 Oct 2027 | £750 |
| More than 6 months late | From 30 Oct 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2027 | £200 |
| 3 months late | 31 Oct 2027 | another £200 |
| 6 months late | 31 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- 16614743
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 29 July 2025 (1 year ago)
- Registered office
- 76 High Street, Dowlais Top, Merthyr Tydfil, CF48 3PW
- Nature of business
- Construction of domestic buildings (SIC 41202)
Other building completion and finishing (SIC 43390)
Retail sale via mail order houses or via Internet (SIC 47910) - Year end
- 31 July (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 28 July 2026
- Previous names
- Vironox Supplements Ltd (until 24 Aug 2026)
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 Merthyr Tydfil
Other active building contractors registered in Merthyr Tydfil.
- Ecas Group Ltd2025
- Elt Brickwork Limited2026
- Fear & Law Properties Ltd2024
- Ffrind Developments Limited2016
- Flec Construction Ltd2026
- GTH Consrtuction (Wales) Ltd2014
- Hareva Construction Ltd2019
- JGH Construction Solutions Limited2026
All building contractors in Merthyr Tydfil · All trades in Merthyr Tydfil · Builders across the UK
Frequently asked questions
When are Diamond Quality Ltd's accounts due?
Diamond Quality Ltd's next accounts are due at Companies House by 29 April 2027 (in 198 days), covering the period to 31 July 2026.
When is Diamond Quality 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 28 July 2026, due by 28 July 2027, and one for the period to 31 July 2026, due by 31 July 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Diamond Quality Ltd still trading?
Diamond Quality 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 Diamond Quality Ltd do?
Diamond Quality Ltd is registered under Construction of domestic buildings (SIC 41202); Other building completion and finishing (SIC 43390); Retail sale via mail order houses or via Internet (SIC 47910).
How old is Diamond Quality Ltd?
Diamond Quality Ltd was incorporated on 29 July 2025, 1 year ago.
What is the penalty if Diamond Quality 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 Diamond Quality 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.