- Companies
- Installers
- Luton
- J&L Thermal Limited
J&L Thermal Limited
- Company number
- 11059525
- Incorporated
- 13 Nov 20178 years trading
- Registered office
- C/O Digitus, 363A Dunstable Road, Luton, LU4 8BY
- Nature of business
- Other construction installation
J&L Thermal Limited is a 8-year-old private limited company registered in Luton, company number 11059525, one of 110 installation companies (insulation, lifts, shutters and similar) in Luton. Its next accounts are due at Companies House on 31 August 2027, and the CT600 for the period to 30 November 2026 is due at HMRC on 30 November 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 £6,364 (+47.6%) on the year before, to £20K.
- Net assets rose in 6 of 7 year-on-year comparisons on record.
- Current assets of £14K against £2,821 owed within a year: 4.9 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 8 years, 2018 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Nov 2025 | £20K | £14K | £2,821 | 1 | |
| 30 Nov 2024 | £13K | £9,651 | £1,800 | 1 | |
| 30 Nov 2023 | £13K | £7,970 | £2,032 | 1 | |
| 30 Nov 2022 | £9,902 | £11K | £1,399 | 1 | |
| 30 Nov 2021 | £11K | £21K | 2 | ||
| 30 Nov 2020 | £3,888 | £10K | £7,349 | 2 | |
| 30 Nov 2019 | £3,820 | £5,905 | £2,095 | 1 | |
| 30 Nov 2018 | £10 |
Where J&L Thermal Limited is registered
The registered office is in Luton (LU4), in the Luton local authority area, East of England. Show LU4 8BY on a map.
Other trade companies in LU4
- Kai Properties LtdProperty developers
- Surrey Design and Build LtdRoofers
- Lignora LtdFloor and wall tilers
- MK Services Pro LtdProperty developers
- Amp Vision Solutions LtdElectricians
- S R Auto Motors LimitedMotor traders
- Arseley Motor Group LtdMotor traders
- F Martini Building & Roofing LtdBuilders
Shared registered office
38 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if J&L Thermal 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 August 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Sep 2027 to 30 Sep 2027 | £150 |
| 1 to 3 months late | 1 Oct 2027 to 30 Nov 2027 | £375 |
| 3 to 6 months late | 1 Dec 2027 to 29 Feb 2028 | £750 |
| More than 6 months late | From 1 Mar 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Dec 2027 | £200 |
| 3 months late | 29 Feb 2028 | another £200 |
| 6 months late | 30 May 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Nov 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
- 11059525
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 13 November 2017 (8 years ago)
- Registered office
- C/O Digitus, 363A Dunstable Road, Luton, LU4 8BY
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 30 November (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 November 2025
- Last confirmation statement
- 12 November 2025
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 Luton
Other active installation companies (insulation, lifts, shutters and similar) registered in Luton.
- JDP Security Ltd2021
- K Shortt & Co Limited2018
- Kelyn Ltd2026
- KTN Mechanical Engineering Ltd2024
- Ky Maintenance Luton Limited2026
- Lacunar Limited2011
- Lets Contracts Ltd2024
- LK Construction & Utilities Ltd2026
All installation companies (insulation, lifts, shutters and similar) in Luton · All trades in Luton · Installers across the UK
Frequently asked questions
When are J&L Thermal Limited's accounts due?
J&L Thermal Limited's next accounts are due at Companies House by 31 August 2027 (in 321 days), covering the period to 30 November 2026.
When is J&L Thermal Limited's CT600 due?
The CT600 for the period to 30 November 2026 is due at HMRC by 30 November 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 September 2027.
Is J&L Thermal Limited still trading?
J&L Thermal Limited 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 J&L Thermal Limited do?
J&L Thermal Limited is registered under Other construction installation (SIC 43290).
How old is J&L Thermal Limited?
J&L Thermal Limited was incorporated on 13 November 2017, 8 years ago.
What is the penalty if J&L Thermal 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 J&L Thermal Limited 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.