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- Thermoshield Insulation Ltd
Company profile · Specialist contractors
Thermoshield Insulation Ltd
Thermoshield Insulation Ltd is a 1-year-old private limited company registered in Casnewydd, company number 16015985, one of the UK's specialist construction companies. Its next accounts are due at Companies House on 14 October 2026, and its first CT600 is due at HMRC on 13 October 2026.
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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Financial snapshot, 2025
From the balance sheet at 31 October 2025, as filed at Companies House.
Where Thermoshield Insulation Ltd is registered
The registered office is in Casnewydd (NP19), in the Newport local authority area, Wales. Show NP19 4AP on a map.
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What happens if Thermoshield Insulation 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 14 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 15 Oct 2026 to 14 Nov 2026 | £150 |
| 1 to 3 months late | 15 Nov 2026 to 14 Jan 2027 | £375 |
| 3 to 6 months late | 15 Jan 2027 to 14 Apr 2027 | £750 |
| More than 6 months late | From 15 Apr 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2026 | £200 |
| 3 months late | 31 Jan 2027 | another £200 |
| 6 months late | 30 Apr 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Oct 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
- 16015985
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 14 October 2024 (1 year ago)
- Registered office
- 24 Clarke Road, Casnewydd, Casnewydd, NP19 4AP
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 October (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 27 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 Casnewydd
Other active specialist construction companies registered in Casnewydd.
All specialist construction companies in Casnewydd · All trades in Casnewydd · Specialist contractors across the UK
Frequently asked questions
When are Thermoshield Insulation Ltd's accounts due?
Thermoshield Insulation Ltd's next accounts are due at Companies House by 14 October 2026 (in 2 days), covering the period to 31 October 2025.
When is Thermoshield Insulation 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 13 October 2025, due by 13 October 2026, and one for the period to 31 October 2025, due by 31 October 2026. Corporation tax is payable 9 months and 1 day after the end of each.
Is Thermoshield Insulation Ltd still trading?
Thermoshield Insulation 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 Thermoshield Insulation Ltd do?
Thermoshield Insulation Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Thermoshield Insulation Ltd?
Thermoshield Insulation Ltd was incorporated on 14 October 2024, 1 year ago.
What is the penalty if Thermoshield Insulation 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 Thermoshield Insulation 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.