- Companies
- Installers
- London
- Isl Installation Solutions Ltd
Isl Installation Solutions Ltd
- Company number
- 08819016
- Incorporated
- 18 Dec 201312 years trading
- Registered office
- 37 Grantock Road, London, E17 4DF
- Nature of business
- Other construction installation; Glazing
Isl Installation Solutions Ltd is a 12-year-old private limited company registered in London, company number 08819016, one of 2,278 installation companies (insulation, lifts, shutters and similar) in London. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
Is this your company?
File the accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for Isl Installation Solutions LtdOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
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 £2,904 (+0.2%) on the year before, to £1.5M.
- Net assets rose in 7 of 9 year-on-year comparisons on record.
- Current assets of £1.5M against £30K owed within a year: more than 10 times cover.
- 4 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 Dec 2025 | £1.5M | £733K | £1.5M | £30K | 4 |
| 31 Dec 2024 | £1.5M | £821K | £1.6M | £111K | 4 |
| 31 Dec 2023 | £1.4M | £974K | £1.7M | £202K | 5 |
| 31 Dec 2022 | £1.2M | £752K | £1.4M | £143K | 5 |
| 31 Dec 2021 | £881K | £349K | £974K | £72K | 3 |
| 31 Dec 2020 | £890K | £1.1M | £1.1M | £207K | 4 |
| 31 Dec 2019 | £803K | £1.1M | £1.1M | £350K | 0 |
| 31 Dec 2018 | £202K | £306K | £323K | £135K | 4 |
| 31 Dec 2017 | £287K | £261K | £364K | £90K | 3 |
| 31 Dec 2016 | £284K | £346K | £74K | 3 |
Where Isl Installation Solutions Ltd is registered
The registered office is in London (E17), in the Waltham Forest local authority area, London. Show E17 4DF on a map.
Other trade companies in E17
- MGB Auto Trading LtdMotor traders
- Spotless Behaviour LtdCleaning companies
- Addison & Vale Construction LtdBuilders
- Karina Business LtdInstallers
- Hazzi Automotive LtdMechanics and garages
- Zlatev Construction Service LimitedFinishing trades
- Zzzguard LtdBuilders
- Ok Estates & Developments LtdBuilders
What happens if Isl Installation Solutions 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 30 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- 08819016
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 18 December 2013 (12 years ago)
- Registered office
- 37 Grantock Road, London, E17 4DF
- Nature of business
- Other construction installation (SIC 43290)
Glazing (SIC 43342) - Year end
- 31 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 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 London
Other active installation companies (insulation, lifts, shutters and similar) registered in London.
- Islam and Sons Limited2021
- Islaverde UK Limited2024
- Iso Consulting Management Ltd2026
- Isofit Mechanical Services Ltd2026
- Isolairy Ltd2020
- Isolife12 Trading Ltd2020
- Itcc Services Ltd2025
- Its Done General Support Limited2025
All installation companies (insulation, lifts, shutters and similar) in London · All trades in London · Installers across the UK
Frequently asked questions
When are Isl Installation Solutions Ltd's accounts due?
Isl Installation Solutions Ltd's next accounts are due at Companies House by 30 September 2027 (in 352 days), covering the period to 31 December 2026.
When is Isl Installation Solutions Ltd's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is Isl Installation Solutions Ltd still trading?
Isl Installation Solutions 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 Isl Installation Solutions Ltd do?
Isl Installation Solutions Ltd is registered under Other construction installation (SIC 43290); Glazing (SIC 43342).
How old is Isl Installation Solutions Ltd?
Isl Installation Solutions Ltd was incorporated on 18 December 2013, 12 years ago.
What is the penalty if Isl Installation Solutions 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 Isl Installation Solutions 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.