- Companies
- Specialist contractors
- Kingston upon Thames
- Radiant Insulation Co. Limited
Radiant Insulation Co. Limited
- Company number
- 01635283
- Incorporated
- 13 May 198244 years trading
- Registered office
- Cell 6 Kopshop, 6 Old London Road, Kingston upon Thames, KT2 6QF
- Nature of business
- Other specialised construction activities n.e.c.
Radiant Insulation Co. Limited is a 44-year-old private limited company registered in Kingston upon Thames, company number 01635283, one of 43 specialist construction companies in Kingston upon Thames. Its next accounts are due at Companies House on 30 June 2027, and the CT600 for the period to 30 September 2026 is due at HMRC on 30 September 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 £17K (+2.5%) on the year before, to £678K.
- Net assets rose in 8 of 9 year-on-year comparisons on record.
- Current assets of £828K against £150K owed within a year: 5.5 times cover.
- 2 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 |
|---|---|---|---|---|---|
| 30 Sep 2025 | £678K | £674K | £828K | £150K | 2 |
| 30 Sep 2024 | £661K | £655K | £757K | £96K | 2 |
| 30 Sep 2023 | £627K | £672K | £815K | £189K | 2 |
| 30 Sep 2022 | £523K | £469K | £576K | £53K | 2 |
| 30 Sep 2021 | £639K | £575K | £736K | £99K | 4 |
| 30 Sep 2020 | £593K | £651K | £672K | £80K | 4 |
| 30 Sep 2019 | £523K | £602K | £723K | £301K | 4 |
| 30 Sep 2018 | £428K | £445K | £568K | £141K | |
| 30 Sep 2017 | £419K | £455K | £671K | £244K | |
| 30 Sep 2016 | £337K | £52K | £194K | £190K |
Where Radiant Insulation Co. Limited is registered
The registered office is in Kingston upon Thames (KT2), in the Kingston upon Thames local authority area, London. Show KT2 6QF on a map.
Other trade companies in KT2
- Max Fix Plumbing LtdPlumbers and heating engineers
- Prime Auto Tyres LtdMotor traders
- Handback LtdCleaning companies
- Coreworks Group LtdJoiners and carpenters
- Triwood LtdMotor traders
- Patience-Rhodes Holdings LtdInstallers
- Kingston Motor Parts LtdMotor traders
- The Property Professor LtdFinishing trades
What happens if Radiant Insulation Co. 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 30 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jul 2027 to 31 Jul 2027 | £150 |
| 1 to 3 months late | 1 Aug 2027 to 30 Sep 2027 | £375 |
| 3 to 6 months late | 1 Oct 2027 to 31 Dec 2027 | £750 |
| More than 6 months late | From 1 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 01635283
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 13 May 1982 (44 years ago)
- Registered office
- Cell 6 Kopshop, 6 Old London Road, Kingston upon Thames, KT2 6QF
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 30 September (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 September 2025
- Last confirmation statement
- 22 November 2025
- Charges (mortgages)
- 3 outstanding of 3 registered
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 Kingston upon Thames
Other active specialist construction companies registered in Kingston upon Thames.
- Ropeguys Ltd2023
- Shutter Design Limited2016
- South West Surrey Properties Limited2003
- Tarawhiti UK Ltd2024
- The Chess Valley Project Ltd2023
- Tony2010 Ltd2020
- Training Construction Services Limited2019
- Trio Project and Commercial Management Ltd2013
All specialist construction companies in Kingston upon Thames · All trades in Kingston upon Thames · Specialist contractors across the UK
Frequently asked questions
When are Radiant Insulation Co. Limited's accounts due?
Radiant Insulation Co. Limited's next accounts are due at Companies House by 30 June 2027 (in 260 days), covering the period to 30 September 2026.
When is Radiant Insulation Co. Limited's CT600 due?
The CT600 for the period to 30 September 2026 is due at HMRC by 30 September 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 July 2027.
Is Radiant Insulation Co. Limited still trading?
Radiant Insulation Co. 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 Radiant Insulation Co. Limited do?
Radiant Insulation Co. Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Radiant Insulation Co. Limited?
Radiant Insulation Co. Limited was incorporated on 13 May 1982, 44 years ago.
What is the penalty if Radiant Insulation Co. 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 Radiant Insulation Co. 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.