- Companies
- Installers
- Southsea
- Spinnaker Windows & Conservatories Limited
Spinnaker Windows & Conservatories Limited
- Company number
- 06778209
- Incorporated
- 22 Dec 200817 years trading
- Registered office
- c/o C/O Ency Associates, Printware Court Cumberland Business Centre, Northumberland Road, Southsea, Hampshire, PO5 1DS
- Nature of business
- Other construction installation
Spinnaker Windows & Conservatories Limited is a 17-year-old private limited company registered in Southsea, company number 06778209, one of 18 installation companies (insulation, lifts, shutters and similar) in Southsea. 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.
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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 £41K (+100.7%) on the year before, to £263.
- Net assets rose in 4 of 9 year-on-year comparisons on record.
- Current assets of £89K against £87K owed within a year: 1.0 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 | £263 | £18K | £89K | £87K | 4 |
| 31 Dec 2024 | -£40K | £6,068 | £33K | £68K | 4 |
| 31 Dec 2023 | -£58K | £9,516 | £20K | £67K | 4 |
| 31 Dec 2022 | -£32K | £41K | £53K | £64K | 4 |
| 31 Dec 2021 | -£33K | £32K | £55K | £56K | 3 |
| 31 Dec 2020 | -£39K | £5,228 | £32K | £28K | 3 |
| 31 Dec 2019 | -£33K | £15K | £39K | £75K | 3 |
| 31 Dec 2018 | -£23K | £344 | £22K | £46K | 2 |
| 31 Dec 2017 | -£22K | £13K | £23K | £46K | 1 |
| 31 Dec 2016 | -£22K | £3,623 | £21K | £44K | 1 |
Where Spinnaker Windows & Conservatories Limited is registered
The registered office is in Southsea (PO5), in the Portsmouth local authority area, South East. Show PO5 1DS 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
Also registered at this address
4 other companies use the same registered office as Spinnaker Windows & Conservatories Limited.
- Carpe Diem Property Developments LtdCleaning companies
- JMCS Enterprises LimitedProperty developers
- Ogp Electrical Solutions LtdElectricians
- W G Wilson & Sons Builders LimitedCivil engineering
What happens if Spinnaker Windows & Conservatories 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 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
- 06778209
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 22 December 2008 (17 years ago)
- Registered office
- c/o C/O Ency Associates, Printware Court Cumberland Business Centre, Northumberland Road, Southsea, Hampshire, PO5 1DS
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 22 December 2025
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.
- Steel Some Space Ltd2016
- Transform Construction Services Ltd2024
- A Sterling Developments Ltd2026
- Absolute Shutters UK Ltd2014
- Ac Groundworks & Landscaping Ltd2024
- Beautiful Bathrooms Ltd2026
- Brandtech Design Ltd2017
- CJR Fire Protection Ltd2024
All installation companies (insulation, lifts, shutters and similar) in Southsea · All trades in Southsea · Installers across the UK
Frequently asked questions
When are Spinnaker Windows & Conservatories Limited's accounts due?
Spinnaker Windows & Conservatories Limited's next accounts are due at Companies House by 30 September 2027 (in 352 days), covering the period to 31 December 2026.
When is Spinnaker Windows & Conservatories Limited'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 Spinnaker Windows & Conservatories Limited still trading?
Spinnaker Windows & Conservatories 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 Spinnaker Windows & Conservatories Limited do?
Spinnaker Windows & Conservatories Limited is registered under Other construction installation (SIC 43290).
How old is Spinnaker Windows & Conservatories Limited?
Spinnaker Windows & Conservatories Limited was incorporated on 22 December 2008, 17 years ago.
What is the penalty if Spinnaker Windows & Conservatories 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 Spinnaker Windows & Conservatories 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.