- Companies
- Plumbers and heating engineers
- Altrincham
- Thermocill Ltd
Thermocill Ltd
- Company number
- 12713434
- Incorporated
- 2 Jul 20206 years trading
- Registered office
- Suite 13, Peel House, 30 the Downs, Altrincham, Cheshire, WA14 2PX
- Nature of business
- Plumbing, heat and air-conditioning installation; Engineering design activities for industrial process and production; specialised design activities
Thermocill Ltd is a 6-year-old private limited company registered in Altrincham, company number 12713434, one of 29 plumbing and heating companies in Altrincham. Its next accounts are due at Companies House on 30 April 2027, and the CT600 for the period to 31 July 2026 is due at HMRC on 31 July 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 down £16K (-23.2%) on the year before, to -£86K.
- Net assets rose in 0 of 4 year-on-year comparisons on record.
- Current assets of £60K against £2,962 owed within a year: more than 10 times cover.
- 4 employees on average during the year.
- Balance sheets on record for 5 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jul 2025 | -£86K | £14K | £60K | £2,962 | 4 |
| 31 Jul 2024 | -£70K | £35K | £78K | £4,708 | 4 |
| 31 Jul 2023 | -£51K | £42K | £97K | £4,707 | 4 |
| 31 Jul 2022 | -£36K | £91K | £98K | £5,799 | 2 |
| 31 Jul 2021 | £78K | £31K | 1 |
Who runs and owns Thermocill Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (4)
| Name | Role | Appointed |
|---|---|---|
| K*** R*** | Director | Jul 2020 |
| A*** K*** | Director | Mar 2022 |
| J*** B*** | Director | Apr 2023 |
| K*** R*** | Secretary | Jul 2020 |
1 former officer
| Name | Role | Appointed | Left |
|---|---|---|---|
| P*** S*** | Director | Jul 2020 | Mar 2022 |
People with significant control (2)
Where Thermocill Ltd is registered
The registered office is in Altrincham (WA14), in the Trafford local authority area, North West. Show WA14 2PX on a map.
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- 21 Build LimitedProperty developers
- Mrjackson Construction LtdBuilders
- Jak Steel Fabrication LimitedSpecialist contractors
- Imperium Business Group LtdProperty developers
- Central Building Solutions (NW) LtdBuilders
What happens if Thermocill 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 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 May 2027 to 31 May 2027 | £150 |
| 1 to 3 months late | 1 Jun 2027 to 31 Jul 2027 | £375 |
| 3 to 6 months late | 1 Aug 2027 to 31 Oct 2027 | £750 |
| More than 6 months late | From 1 Nov 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
- 12713434
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 2 July 2020 (6 years ago)
- Registered office
- Suite 13, Peel House, 30 the Downs, Altrincham, Cheshire, WA14 2PX
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
Engineering design activities for industrial process and production (SIC 71121)
specialised design activities (SIC 74100) - Year end
- 31 July (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 July 2025
- Last confirmation statement
- 2 July 2026
Filing notes for plumbing and heating companies
Plumbing and heating companies frequently work under CIS for main contractors and also directly for homeowners, so turnover can mix CIS and non-CIS income.
Similar companies in Altrincham
Other active plumbing and heating companies registered in Altrincham.
- Traffordgas Limited2022
- Akplumbinggroup Ltd2024
- Altrincham Plumbing and Heating Ltd2021
- Aquafix Plumbing Limited2015
- BSK Electric Plumbing Gas Building Services Ltd2025
- C Plumb Ltd2005
- DB Heating and Gas Limited2022
- DRD Cooling Ltd2014
All plumbing and heating companies in Altrincham · All trades in Altrincham · Plumbers and heating engineers across the UK
Frequently asked questions
When are Thermocill Ltd's accounts due?
Thermocill Ltd's next accounts are due at Companies House by 30 April 2027 (in 199 days), covering the period to 31 July 2026.
When is Thermocill Ltd's CT600 due?
The CT600 for the period to 31 July 2026 is due at HMRC by 31 July 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 May 2027.
Is Thermocill Ltd still trading?
Thermocill 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 Thermocill Ltd do?
Thermocill Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220); Engineering design activities for industrial process and production (SIC 71121); specialised design activities (SIC 74100).
How old is Thermocill Ltd?
Thermocill Ltd was incorporated on 2 July 2020, 6 years ago.
Who runs Thermocill Ltd?
Thermocill Ltd has 3 active directors, the longest-serving appointed in Jul 2020. Their names and service addresses are on the Companies House register.
Who owns Thermocill Ltd?
2 people or companies have significant control of Thermocill Ltd: Couette Ltd (owns 25% to 50% of the shares); Ksr Consultancy (Nw) Ltd (owns 50% to 75% of the shares).
What is the penalty if Thermocill 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 Thermocill 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.