- Companies
- Civil engineering
- Swansea
- A J Platinum Groundworks Ltd
A J Platinum Groundworks Ltd
- Company number
- 16584945
- Incorporated
- 15 Jul 20251 year trading
- Registered office
- 10 Garth View, Ynysforgan, Swansea, SA6 6RN
- Nature of business
- Construction of other civil engineering projects n.e.c.
A J Platinum Groundworks Ltd is a 1-year-old private limited company registered in Swansea, company number 16584945, one of 71 civil engineering contractors in Swansea. Its next accounts are due at Companies House on 15 April 2027, and its first CT600 is due at HMRC on 14 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 A J Platinum Groundworks Ltd is registered
The registered office is in Swansea (SA6), in the Swansea local authority area, Wales. Show SA6 6RN on a map.
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Also registered at this address
2 other companies use the same registered office as A J Platinum Groundworks Ltd.
- West & Owen Brickwork LimitedSpecialist contractors
- Westy Brickwork LimitedSpecialist contractors
What happens if A J Platinum Groundworks 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 15 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 16 Apr 2027 to 15 May 2027 | £150 |
| 1 to 3 months late | 16 May 2027 to 15 Jul 2027 | £375 |
| 3 to 6 months late | 16 Jul 2027 to 15 Oct 2027 | £750 |
| More than 6 months late | From 16 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
- 16584945
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 15 July 2025 (1 year ago)
- Registered office
- 10 Garth View, Ynysforgan, Swansea, SA6 6RN
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 31 July (accounting reference date)
- Accounts type
- No accounts filed yet
Filing notes for civil engineering contractors
Civil engineering contractors usually carry plant and machinery, so capital allowances (the annual investment allowance and the main pool) do much of the work in the corporation tax computation.
Similar companies in Swansea
Other active civil engineering contractors registered in Swansea.
- Ad Technique Ltd2021
- Agc Engineering Services Ltd2025
- Ajsl Engineering Limited2017
- Akrivia Engineering Ltd2016
- Aquasol Water Systems Ltd2017
- Atr Construction Ltd2021
- Avarix Highways Engineering Limited2025
- Avarix Limited2025
All civil engineering contractors in Swansea · All trades in Swansea · Civil engineering across the UK
Frequently asked questions
When are A J Platinum Groundworks Ltd's accounts due?
A J Platinum Groundworks Ltd's next accounts are due at Companies House by 15 April 2027 (in 184 days), covering the period to 31 July 2026.
When is A J Platinum Groundworks 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 14 July 2026, due by 14 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 A J Platinum Groundworks Ltd still trading?
A J Platinum Groundworks 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 A J Platinum Groundworks Ltd do?
A J Platinum Groundworks Ltd is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is A J Platinum Groundworks Ltd?
A J Platinum Groundworks Ltd was incorporated on 15 July 2025, 1 year ago.
What is the penalty if A J Platinum Groundworks 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 A J Platinum Groundworks 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.