- Companies
- Plumbers and heating engineers
- Syston
- JJ Thermal Insulation Limited
JJ Thermal Insulation Limited
- Company number
- 16719313
- Incorporated
- 15 Sep 20251 year trading
- Registered office
- 29 Oxford Street, Syston, Leicestershire, LE7 2AT
- Nature of business
- Plumbing, heat and air-conditioning installation
JJ Thermal Insulation Limited is a 1-year-old private limited company registered in Syston, company number 16719313, one of 18 plumbing and heating companies in Syston. Its next accounts are due at Companies House on 31 December 2027, and the CT600 for the period to 31 March 2027 is due at HMRC on 31 March 2028.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2026
From the balance sheet at 31 March 2026, as filed at Companies House.
Who runs and owns JJ Thermal Insulation Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| J*** A*** | Director | Sep 2025 |
Person with significant control
Where JJ Thermal Insulation Limited is registered
The registered office is in Syston (LE7), in the Charnwood local authority area, East Midlands. Show LE7 2AT on a map.
Other trade companies in LE7
- Pro Bodywork and Parts LtdMechanics and garages
- Bright & Pure Cleaning LtdCleaning companies
- Foursight Building Consultancy LimitedProperty developers
- R&R Thermal Covers LtdInstallers
- BH Commercials LtdMotor traders
- Past and Present Projects LtdProperty developers
- Pink Dragon Developments LtdPlumbers and heating engineers
- Bluecore Group LtdCleaning companies
What happens if JJ Thermal Insulation Limited 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 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2028 to 31 Jan 2028 | £150 |
| 1 to 3 months late | 1 Feb 2028 to 31 Mar 2028 | £375 |
| 3 to 6 months late | 1 Apr 2028 to 30 Jun 2028 | £750 |
| More than 6 months late | From 1 Jul 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 2029 | 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
- 16719313
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 15 September 2025 (1 year ago)
- Registered office
- 29 Oxford Street, Syston, Leicestershire, LE7 2AT
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2026
- Last confirmation statement
- 14 September 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 Syston
Other active plumbing and heating companies registered in Syston.
- Lagor Oil Heating & Plumbing Limited2017
- Mick Parmar Limited2005
- Mode Plumbing & Heating Ltd2021
- P and J Plumbing & Heating Limited2011
- Piped Up (Leicester) Ltd2024
- Sibson & Co Ltd2016
- Souter Bathrooms Limited2012
- Thermo-Floor UK Ltd2011
All plumbing and heating companies in Syston · All trades in Syston · Plumbers and heating engineers across the UK
Frequently asked questions
When are JJ Thermal Insulation Limited's accounts due?
JJ Thermal Insulation Limited's next accounts are due at Companies House by 31 December 2027 (in 444 days), covering the period to 31 March 2027.
When is JJ Thermal Insulation Limited's CT600 due?
The CT600 for the period to 31 March 2027 is due at HMRC by 31 March 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2028.
Is JJ Thermal Insulation Limited still trading?
JJ Thermal Insulation Limited is listed as active on the Companies House register (checked 13 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 JJ Thermal Insulation Limited do?
JJ Thermal Insulation Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is JJ Thermal Insulation Limited?
JJ Thermal Insulation Limited was incorporated on 15 September 2025, 1 year ago.
Who runs JJ Thermal Insulation Limited?
JJ Thermal Insulation Limited has 1 active director, the longest-serving appointed in Sep 2025. Their names and service addresses are on the Companies House register.
Who owns JJ Thermal Insulation Limited?
One person or company has significant control of JJ Thermal Insulation Limited: an individual (owns 75% or more of the shares).
What is the penalty if JJ Thermal Insulation Limited 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 JJ Thermal Insulation Limited on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 13 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.