- Companies
- Installers
- Leeds
- Advanced Thermal Ltd
Advanced Thermal Ltd
- Company number
- 15487045
- Incorporated
- 13 Feb 20242 years trading
- Registered office
- 21 Morritt Grove, Leeds, LS15 7HU
- Nature of business
- Other construction installation
Advanced Thermal Ltd is a 2-year-old private limited company registered in Leeds, company number 15487045, one of 225 installation companies (insulation, lifts, shutters and similar) in Leeds. Its next accounts are due at Companies House on 30 November 2026, and the CT600 for the period to 28 February 2026 is due at HMRC on 28 February 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 £58K on the year before, to £58K.
- Current assets of £56K against £120 owed within a year: more than 10 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 2 years, 2024 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 28 Feb 2025 | £58K | £56K | £120 | 2 | |
| 12 Feb 2024 | £0 | £0 | £0 | 2 |
Where Advanced Thermal Ltd is registered
The registered office is in Leeds (LS15), in the Leeds local authority area, Yorkshire and The Humber. Show LS15 7HU on a map.
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What happens if Advanced Thermal 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 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Dec 2026 to 31 Dec 2026 | £150 |
| 1 to 3 months late | 1 Jan 2027 to 28 Feb 2027 | £375 |
| 3 to 6 months late | 1 Mar 2027 to 31 May 2027 | £750 |
| More than 6 months late | From 1 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Mar 2027 | £200 |
| 3 months late | 28 May 2027 | another £200 |
| 6 months late | 28 Aug 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- 15487045
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 13 February 2024 (2 years ago)
- Registered office
- 21 Morritt Grove, Leeds, LS15 7HU
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 29 February (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 28 February 2025
- Last confirmation statement
- 9 February 2026
Filing notes for installation companies (insulation, lifts, shutters and similar)
Installation companies (insulation, lifts, shutters, solar and similar) often buy stock and equipment up front, so stock at the year end and capital allowances both affect the tax bill.
Similar companies in Leeds
Other active installation companies (insulation, lifts, shutters and similar) registered in Leeds.
- Agm Renovations Ltd2026
- Akz Projects Ltd2025
- Albion Glass Leeds Ltd2019
- Alive Design Ltd2014
- All Property Management Services Ltd2021
- All System Go Ltd2025
- Alpine Brickwork Limited2025
- Arc Data Systems Limited2005
All installation companies (insulation, lifts, shutters and similar) in Leeds · All trades in Leeds · Installers across the UK
Frequently asked questions
When are Advanced Thermal Ltd's accounts due?
Advanced Thermal Ltd's next accounts are due at Companies House by 30 November 2026 (in 48 days), covering the period to 28 February 2026.
When is Advanced Thermal Ltd's CT600 due?
The CT600 for the period to 28 February 2026 is due at HMRC by 28 February 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 December 2026.
Is Advanced Thermal Ltd still trading?
Advanced Thermal 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 Advanced Thermal Ltd do?
Advanced Thermal Ltd is registered under Other construction installation (SIC 43290).
How old is Advanced Thermal Ltd?
Advanced Thermal Ltd was incorporated on 13 February 2024, 2 years ago.
What is the penalty if Advanced Thermal 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 Advanced Thermal 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.