- Companies
- Installers
- Southsea
- Isotech Sprayfoam Limited
Isotech Sprayfoam Limited
- Company number
- 04742837
- Incorporated
- 24 Apr 200323 years trading
- Registered office
- 13 Hereford Road, Southsea, Hampshire, PO5 2DH
- Nature of business
- Other construction installation
Isotech Sprayfoam Limited is a 23-year-old private limited company registered in Southsea, company number 04742837, one of 18 installation companies (insulation, lifts, shutters and similar) in Southsea. Its next accounts are due at Companies House on 29 February 2028, and the CT600 for the period to 31 May 2027 is due at HMRC on 31 May 2028.
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 £2,500 (-27.8%) on the year before, to -£12K.
- Net assets rose in 2 of 9 year-on-year comparisons on record.
- Current assets of £20K against £24K owed within a year: 0.8 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 10 years, 2017 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 May 2026 | -£12K | £17K | £20K | £24K | 0 |
| 31 May 2025 | -£9,006 | £3,260 | £11K | £10K | 3 |
| 31 May 2024 | £1,253 | £21K | £27K | £14K | 3 |
| 31 May 2023 | £46K | £59K | £72K | £11K | 3 |
| 31 May 2022 | £51K | £84K | £89K | £21K | 3 |
| 31 May 2021 | £52K | £81K | £83K | £34K | 3 |
| 31 May 2020 | £29K | £55K | £57K | £31K | |
| 31 May 2019 | £29K | £22K | £31K | £6,265 | |
| 31 May 2018 | £32K | £54K | £61K | £35K | |
| 31 May 2017 | £31K | £17K | £44K | £16K |
Where Isotech Sprayfoam Limited is registered
The registered office is in Southsea (PO5), in the Portsmouth local authority area, South East. Show PO5 2DH on a map.
Other trade companies in PO5
- Fixnova LtdRepair services
- Luxury Resin Floors and Media Walls LtdBuilders
- Pretty Unique Cleaning Services LtdCleaning companies
- Bay Bricks LtdProperty developers
- Blydan Holdings LimitedProperty developers
- Inside Out Developments Southampton LtdBuilders
- Hampshire Car Hire LtdMechanics and garages
- Baynes Wipers LtdMachinery repair and installation
What happens if Isotech Sprayfoam 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 29 February 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Mar 2028 to 31 Mar 2028 | £150 |
| 1 to 3 months late | 1 Apr 2028 to 31 May 2028 | £375 |
| 3 to 6 months late | 1 Jun 2028 to 31 Aug 2028 | £750 |
| More than 6 months late | From 1 Sep 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2028 | £200 |
| 3 months late | 31 Aug 2028 | another £200 |
| 6 months late | 30 Nov 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 2029 | 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
- 04742837
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 24 April 2003 (23 years ago)
- Registered office
- 13 Hereford Road, Southsea, Hampshire, PO5 2DH
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 31 May (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 May 2026
- Last confirmation statement
- 10 April 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 Southsea
Other active installation companies (insulation, lifts, shutters and similar) registered in Southsea.
- Jdevans Group Limited2025
- JPS Refurbs Limited2022
- RBF Solutions Ltd2025
- Redleif Ltd2019
- Sky Lite Production Limited2022
- Solarco Energy Ltd2026
- Spinnaker Windows & Conservatories Limited2008
- Steel Some Space Ltd2016
All installation companies (insulation, lifts, shutters and similar) in Southsea · All trades in Southsea · Installers across the UK
Frequently asked questions
When are Isotech Sprayfoam Limited's accounts due?
Isotech Sprayfoam Limited's next accounts are due at Companies House by 29 February 2028 (in 504 days), covering the period to 31 May 2027.
When is Isotech Sprayfoam Limited's CT600 due?
The CT600 for the period to 31 May 2027 is due at HMRC by 31 May 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 March 2028.
Is Isotech Sprayfoam Limited still trading?
Isotech Sprayfoam 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 Isotech Sprayfoam Limited do?
Isotech Sprayfoam Limited is registered under Other construction installation (SIC 43290).
How old is Isotech Sprayfoam Limited?
Isotech Sprayfoam Limited was incorporated on 24 April 2003, 23 years ago.
What is the penalty if Isotech Sprayfoam 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 Isotech Sprayfoam 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.