- Companies
- Specialist contractors
- Eastleigh
- Thermo-Tech Insullations Ltd
Thermo-Tech Insullations Ltd
- Company number
- 05435725
- Incorporated
- 26 Apr 200521 years trading
- Registered office
- 10 Highfield Road, Chandler's Ford, Eastleigh, SO53 2JT
- Nature of business
- Other specialised construction activities n.e.c.
Thermo-Tech Insullations Ltd is a 21-year-old private limited company registered in Eastleigh, company number 05435725, one of 51 specialist construction companies in Eastleigh. 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 £47K (+14.9%) on the year before, to £364K.
- Net assets rose in 7 of 9 year-on-year comparisons on record.
- Current assets of £432K against £108K owed within a year: 4.0 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £364K | £432K | £108K | 2 | |
| 31 Mar 2024 | £317K | £370K | £79K | 2 | |
| 31 Mar 2023 | £235K | £305K | £94K | 3 | |
| 31 Mar 2022 | £180K | £100K | £261K | £98K | 4 |
| 31 Mar 2021 | £211K | £134K | £273K | £79K | 5 |
| 31 Mar 2020 | £301K | £167K | £446K | £156K | 5 |
| 31 Mar 2019 | £255K | £139K | £373K | £132K | 4 |
| 31 Mar 2018 | £233K | £121K | £330K | £112K | 2 |
| 31 Mar 2017 | £139K | £64K | £218K | £86K | 1 |
| 31 Mar 2016 | £102K | £25K | £118K | £32K |
Where Thermo-Tech Insullations Ltd is registered
The registered office is in Eastleigh (SO53), in the Eastleigh local authority area, South East. Show SO53 2JT on a map.
Other trade companies in SO53
- Surface Dressing UK LtdCivil engineering
- Audin Construction LtdSpecialist contractors
- Jelly West Developments LtdProperty developers
- Climate and Renewables Service LtdPlumbers and heating engineers
- McCarthy Construct LimitedProperty developers
- Cura Projects LimitedFinishing trades
- Tubmate LtdMachinery repair and installation
- Brook Hill Developments LimitedProperty developers
Also registered at this address
1 other company uses the same registered office as Thermo-Tech Insullations Ltd.
- DS Insulation LtdBuilders
What happens if Thermo-Tech Insullations 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 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
- 05435725
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 26 April 2005 (21 years ago)
- Registered office
- 10 Highfield Road, Chandler's Ford, Eastleigh, SO53 2JT
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 30 March 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 Eastleigh
Other active specialist construction companies registered in Eastleigh.
- Topfawn Management Limited1993
- Total Design Shopfitting Services Limited1999
- Truespace Ltd2024
- United Contractors Limited2017
- Vokes Concrete Flooring Limited2010
- Whitaker & Co Kitchens Limited2021
- Youmans and Sons Limited2016
- 21 Roofing Ltd2024
All specialist construction companies in Eastleigh · All trades in Eastleigh · Specialist contractors across the UK
Frequently asked questions
When are Thermo-Tech Insullations Ltd's accounts due?
Thermo-Tech Insullations Ltd's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is Thermo-Tech Insullations Ltd'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 Thermo-Tech Insullations Ltd still trading?
Thermo-Tech Insullations 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 Thermo-Tech Insullations Ltd do?
Thermo-Tech Insullations Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Thermo-Tech Insullations Ltd?
Thermo-Tech Insullations Ltd was incorporated on 26 April 2005, 21 years ago.
What is the penalty if Thermo-Tech Insullations 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 Thermo-Tech Insullations 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.