- Companies
- Installers
- Slough
- Interior Climate Systems Ltd
Interior Climate Systems Ltd
- Company number
- 06501479
- Incorporated
- 12 Feb 200818 years trading
- Registered office
- C/O Taxassist Accountants, 635 Bath Road, Slough, SL1 6AE
- Nature of business
- Other construction installation
Interior Climate Systems Ltd is a 18-year-old private limited company registered in Slough, company number 06501479, one of 73 installation companies (insulation, lifts, shutters and similar) in Slough. Its next accounts are due at Companies House on 31 January 2027, and the CT600 for the period to 30 April 2026 is due at HMRC on 30 April 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 £40K (-48.5%) on the year before, to £42K.
- Net assets rose in 2 of 9 year-on-year comparisons on record.
- Current assets of £207K against £215K owed within a year: 1.0 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 Apr 2025 | £42K | £68K | £207K | £215K | 2 |
| 30 Apr 2024 | £82K | £142K | £249K | £229K | 2 |
| 30 Apr 2023 | £101K | £195K | £318K | £256K | 2 |
| 30 Apr 2022 | £176K | £255K | £409K | £248K | 2 |
| 30 Apr 2021 | £162K | £122K | £342K | £205K | 2 |
| 30 Apr 2020 | £194K | £129K | £335K | £154K | 2 |
| 30 Apr 2019 | £213K | £105K | £172K | £20K | |
| 30 Apr 2018 | £262K | £163K | £227K | £26K | |
| 30 Apr 2017 | £243K | £163K | £230K | £5,976 | |
| 30 Apr 2016 | £253K | £258K | £11K |
Where Interior Climate Systems Ltd is registered
The registered office is in Slough (SL1), in the Slough local authority area, South East. Show SL1 6AE on a map.
Other trade companies in SL1
- Yanky Construction LtdBuilders
- Westside Automotive LtdMotor traders
- Shadeworks LtdInstallers
- Yad Building Services LimitedBuilders
- Slough Vehicle Repair Centre LtdMechanics and garages
- Hadi Automotive LtdMotor traders
- Imperial Berkshire Motors LtdMotor traders
- MDN General LtdBuilders
Also registered at this address
10 other companies use the same registered office as Interior Climate Systems Ltd.
- Ajh Fencing & Groundworks LtdLandscapers and gardeners
- D.M. Elliot Carpentry LtdSpecialist contractors
- G & S Site Services LtdBuilders
- Hamilton Brickwork LimitedInstallers
- Hang IT Services LtdFinishing trades
- Housego Heating LtdPlumbers and heating engineers
- MW Home Improvements LimitedSpecialist contractors
- Rayner-Whitbread LtdPlumbers and heating engineers
- RMB Heating and Plumbing LimitedPlumbers and heating engineers
- S-Line Motors LimitedMotor traders
What happens if Interior Climate Systems 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 31 January 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Feb 2027 to 28 Feb 2027 | £150 |
| 1 to 3 months late | 1 Mar 2027 to 30 Apr 2027 | £375 |
| 3 to 6 months late | 1 May 2027 to 31 Jul 2027 | £750 |
| More than 6 months late | From 1 Aug 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2027 | £200 |
| 3 months late | 30 Jul 2027 | another £200 |
| 6 months late | 30 Oct 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 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
- 06501479
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 12 February 2008 (18 years ago)
- Registered office
- C/O Taxassist Accountants, 635 Bath Road, Slough, SL1 6AE
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 30 April (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 April 2025
- Last confirmation statement
- 12 February 2026
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 Slough
Other active installation companies (insulation, lifts, shutters and similar) registered in Slough.
- J&G Sprinkler Protection Ltd2025
- JD Security and Cabling Ltd2025
- Josh Harwood Construction Ltd2022
- Kalsi Construction Ltd2011
- Klass Collective Limited2026
- Klass Marquees Group Ltd2026
- Klass Orangery Limited2026
- KSD Property Ltd2025
All installation companies (insulation, lifts, shutters and similar) in Slough · All trades in Slough · Installers across the UK
Frequently asked questions
When are Interior Climate Systems Ltd's accounts due?
Interior Climate Systems Ltd's next accounts are due at Companies House by 31 January 2027 (in 111 days), covering the period to 30 April 2026.
When is Interior Climate Systems Ltd's CT600 due?
The CT600 for the period to 30 April 2026 is due at HMRC by 30 April 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 February 2027.
Is Interior Climate Systems Ltd still trading?
Interior Climate Systems 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 Interior Climate Systems Ltd do?
Interior Climate Systems Ltd is registered under Other construction installation (SIC 43290).
How old is Interior Climate Systems Ltd?
Interior Climate Systems Ltd was incorporated on 12 February 2008, 18 years ago.
What is the penalty if Interior Climate Systems 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 Interior Climate Systems 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.