- Companies
- Plasterers
- Rhyl
- Thermtek Ltd
Thermtek Ltd
- Company number
- 15966696
- Incorporated
- 19 Sep 20242 years trading
- Registered office
- 1 Glyn Avenue, Rhyl, LL18 4LS
- Nature of business
- Plastering; Joinery installation
Thermtek Ltd is a 2-year-old private limited company registered in Rhyl, company number 15966696, one of the UK's plastering companies. Its next accounts are due at Companies House on 30 June 2027, and the CT600 for the period to 30 September 2026 is due at HMRC on 30 September 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 30 September 2025, as filed at Companies House.
Where Thermtek Ltd is registered
The registered office is in Rhyl (LL18), in the Denbighshire local authority area, Wales. Show LL18 4LS on a map.
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What happens if Thermtek 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 30 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jul 2027 to 31 Jul 2027 | £150 |
| 1 to 3 months late | 1 Aug 2027 to 30 Sep 2027 | £375 |
| 3 to 6 months late | 1 Oct 2027 to 31 Dec 2027 | £750 |
| More than 6 months late | From 1 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 15966696
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 19 September 2024 (2 years ago)
- Registered office
- 1 Glyn Avenue, Rhyl, LL18 4LS
- Nature of business
- Plastering (SIC 43310)
Joinery installation (SIC 43320) - Year end
- 30 September (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 September 2025
- Last confirmation statement
- 18 September 2025
- Previous names
- JDL Installers Limited (until 29 Sep 2025)
Filing notes for plastering companies
Plastering companies are usually small, labour-based businesses. Director pay is often a mix of salary and dividends, which only works if the company has profits to pay dividends from.
Similar companies in Rhyl
Other active plastering companies registered in Rhyl.
All plastering companies in Rhyl · All trades in Rhyl · Plasterers across the UK
Frequently asked questions
When are Thermtek Ltd's accounts due?
Thermtek Ltd's next accounts are due at Companies House by 30 June 2027 (in 261 days), covering the period to 30 September 2026.
When is Thermtek Ltd's CT600 due?
The CT600 for the period to 30 September 2026 is due at HMRC by 30 September 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 July 2027.
Is Thermtek Ltd still trading?
Thermtek 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 Thermtek Ltd do?
Thermtek Ltd is registered under Plastering (SIC 43310); Joinery installation (SIC 43320).
How old is Thermtek Ltd?
Thermtek Ltd was incorporated on 19 September 2024, 2 years ago.
What is the penalty if Thermtek 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 Thermtek 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.