- Companies
- Specialist contractors
- Biggleswade
- K. & H. Thermal Insulations Limited
K. & H. Thermal Insulations Limited
- Company number
- 01140899
- Incorporated
- 22 Oct 197352 years trading
- Registered office
- 91 High Street, Broom, Biggleswade, Bedfordshire, SG18 9NA
- Nature of business
- Other specialised construction activities n.e.c.
K. & H. Thermal Insulations Limited is a 52-year-old private limited company registered in Biggleswade, company number 01140899, one of 17 specialist construction companies in Biggleswade. Its next accounts are due at Companies House on 31 October 2026, and the CT600 for the period to 31 January 2026 is due at HMRC on 31 January 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 £12K (+3.7%) on the year before, to £329K.
- Net assets rose in 7 of 9 year-on-year comparisons on record.
- Current assets of £390K against £97K owed within a year: 4.0 times cover.
- 6 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 Jan 2025 | £329K | £390K | £97K | 6 | |
| 31 Jan 2024 | £317K | £399K | £105K | 6 | |
| 31 Jan 2023 | £346K | £399K | £84K | 5 | |
| 31 Jan 2022 | £382K | £470K | £112K | 6 | |
| 31 Jan 2021 | £375K | £173K | £524K | £180K | 6 |
| 31 Jan 2020 | £360K | £481K | £156K | 6 | |
| 31 Jan 2019 | £264K | £351K | £114K | ||
| 31 Jan 2018 | £211K | £277K | |||
| 31 Jan 2017 | £158K | £232K | £75K | ||
| 31 Jan 2016 | £118K | £108K | £175K | £58K |
Who runs and owns K. & H. Thermal Insulations Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (3)
| Name | Role | Appointed |
|---|---|---|
| A*** K*** | Director | before Oct 1992 |
| J*** K*** | Director | before Oct 1992 |
| J*** K*** | Secretary | before Oct 1992 |
1 former officer
| Name | Role | Appointed | Left |
|---|---|---|---|
| M*** K*** | Director | Oct 2018 | Aug 2023 |
People with significant control (2)
Where K. & H. Thermal Insulations Limited is registered
The registered office is in Biggleswade (SG18), in the Central Bedfordshire local authority area, East of England. Show SG18 9NA on a map.
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- Khyne Homes LimitedProperty developers
- JM Control Installations LtdElectricians
- K Flow Heating and Engineering LimitedPlumbers and heating engineers
- Forward Gear LtdMotor traders
- A-Number One Gardening Services LimitedLandscapers and gardeners
- The Mould Removal Company LtdSpecialist contractors
What happens if K. & H. Thermal Insulations 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 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2026 to 30 Nov 2026 | £150 |
| 1 to 3 months late | 1 Dec 2026 to 31 Jan 2027 | £375 |
| 3 to 6 months late | 1 Feb 2027 to 30 Apr 2027 | £750 |
| More than 6 months late | From 1 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 31 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 01140899
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 22 October 1973 (52 years ago)
- Registered office
- 91 High Street, Broom, Biggleswade, Bedfordshire, SG18 9NA
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 January (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 January 2025
- Last confirmation statement
- 11 October 2025
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 Biggleswade
Other active specialist construction companies registered in Biggleswade.
- Kiyos Ltd2022
- Langford Windows Doors and Conservatories Limited2004
- M N P Building Services Limited2011
- Marquee Brickwork Ltd2022
- Ocd FM Ltd2014
- PFC Digital Ltd2023
- PGH Builders Ltd2024
- PHL Hydraulics UK Limited2019
All specialist construction companies in Biggleswade · All trades in Biggleswade · Specialist contractors across the UK
Frequently asked questions
When are K. & H. Thermal Insulations Limited's accounts due?
K. & H. Thermal Insulations Limited's next accounts are due at Companies House by 31 October 2026 (in 18 days), covering the period to 31 January 2026.
When is K. & H. Thermal Insulations Limited's CT600 due?
The CT600 for the period to 31 January 2026 is due at HMRC by 31 January 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 November 2026.
Is K. & H. Thermal Insulations Limited still trading?
K. & H. Thermal Insulations 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 K. & H. Thermal Insulations Limited do?
K. & H. Thermal Insulations Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is K. & H. Thermal Insulations Limited?
K. & H. Thermal Insulations Limited was incorporated on 22 October 1973, 52 years ago.
Who runs K. & H. Thermal Insulations Limited?
K. & H. Thermal Insulations Limited has 2 active directors. Their names and service addresses are on the Companies House register.
Who owns K. & H. Thermal Insulations Limited?
2 people or companies have significant control of K. & H. Thermal Insulations Limited: an individual (owns 25% to 50% of the shares); an individual (owns 25% to 50% of the shares).
What is the penalty if K. & H. Thermal Insulations 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 K. & H. Thermal Insulations 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.