- Companies
- Roofers
- Winchester
- Poseidon 404 Limited
Poseidon 404 Limited
- Company number
- 08732623
- Incorporated
- 15 Oct 201312 years trading
- Registered office
- 6 Charlecote Mews, Staple Gardens, Winchester, Hampshire, SO23 8SR
- Nature of business
- Roofing activities
Poseidon 404 Limited is a 12-year-old private limited company registered in Winchester, company number 08732623, one of 17 roofing companies in Winchester. Its next accounts are due at Companies House on 31 July 2027, and the CT600 for the period to 31 October 2026 is due at HMRC on 31 October 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 £962 (+3.9%) on the year before, to £25K.
- Net assets rose in 4 of 9 year-on-year comparisons on record.
- Current assets of £33K against £26K owed within a year: 1.2 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- 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 Oct 2025 | £25K | £14K | £33K | £26K | 0 |
| 31 Oct 2024 | £24K | £6,783 | £23K | £19K | 2 |
| 31 Oct 2023 | £30K | £2,046 | £20K | £17K | 2 |
| 31 Oct 2022 | £5,103 | £1,143 | £15K | £14K | 2 |
| 31 Oct 2021 | £8,092 | £5,960 | £19K | £15K | 2 |
| 31 Oct 2020 | £2,266 | £7,905 | £16K | £18K | 2 |
| 31 Oct 2019 | £1,982 | £6,772 | £19K | £23K | |
| 31 Oct 2018 | £4,806 | £7,015 | £19K | £25K | |
| 31 Oct 2017 | £7,820 | £7,644 | £22K | £26K | |
| 31 Oct 2016 | £12K | £5,013 | £36K | £26K |
Where Poseidon 404 Limited is registered
The registered office is in Winchester (SO23), in the Winchester local authority area, South East. Show SO23 8SR on a map.
Other trade companies in SO23
- Aeronix LimitedPlumbers and heating engineers
- Z Cubic Home LtdJoiners and carpenters
- Fordstone Groundworks & Civil Engineering LtdCivil engineering
- Osr Homes LtdBuilders
- Welborne LS LimitedProperty developers
- Charlecote Sussex LimitedSpecialist contractors
- Shorewood Pankridge Street LtdBuilders
- The Home & Garden Collective LtdBuilders
Also registered at this address
17 other companies use the same registered office as Poseidon 404 Limited.
- A and R Groundworks LtdGroundworks and demolition
- Allbrook Heating LimitedPlumbers and heating engineers
- Carsmart South LimitedMotor traders
- Classmaxi Developments (Solstice) LtdProperty developers
- Commercial & Specialist Cleaning LtdCleaning companies
- Composite Boatworks LimitedMachinery repair and installation
- Denley King International LimitedProperty developers
- Future Flooring LimitedFloor and wall tilers
- Greenkeeper Pro LimitedLandscapers and gardeners
- K & M Fencing LimitedInstallers
- Manor Electrical & Garage Services LimitedElectricians
- Mtec Scaffolding Services LtdScaffolders
- PCC Premier Car Care LtdMechanics and garages
- R3 SF LimitedFloor and wall tilers
- Routine Marine LimitedMachinery repair and installation
- TF Diagnostics LimitedMechanics and garages
- The NJB Motor Company (UK) LimitedMotor traders
What happens if Poseidon 404 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 31 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Aug 2027 to 31 Aug 2027 | £150 |
| 1 to 3 months late | 1 Sep 2027 to 31 Oct 2027 | £375 |
| 3 to 6 months late | 1 Nov 2027 to 31 Jan 2028 | £750 |
| More than 6 months late | From 1 Feb 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2027 | £200 |
| 3 months late | 31 Jan 2028 | another £200 |
| 6 months late | 30 Apr 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Oct 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
- 08732623
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 15 October 2013 (12 years ago)
- Registered office
- 6 Charlecote Mews, Staple Gardens, Winchester, Hampshire, SO23 8SR
- Nature of business
- Roofing activities (SIC 43910)
- Year end
- 31 October (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 October 2025
- Last confirmation statement
- 1 November 2025
Filing notes for roofing companies
Roofing companies commonly work under CIS and run vans and access equipment, so CIS deductions and capital allowances are the two things to get right.
Similar companies in Winchester
Other active roofing companies registered in Winchester.
- Rangers Roofing Ltd2026
- Raymonds Roofing Ltd2022
- Reach Home Improvements Ltd2021
- Thames Valley Roofing Ltd2009
- The Winchester Flat Roofing Company Ltd2024
- Better Builds Roofing Ltd2026
- Crownridge Roofing & Guttering Solutions Ltd2026
- FTL Thatching Limited2007
All roofing companies in Winchester · All trades in Winchester · Roofers across the UK
Frequently asked questions
When are Poseidon 404 Limited's accounts due?
Poseidon 404 Limited's next accounts are due at Companies House by 31 July 2027 (in 292 days), covering the period to 31 October 2026.
When is Poseidon 404 Limited's CT600 due?
The CT600 for the period to 31 October 2026 is due at HMRC by 31 October 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 August 2027.
Is Poseidon 404 Limited still trading?
Poseidon 404 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 Poseidon 404 Limited do?
Poseidon 404 Limited is registered under Roofing activities (SIC 43910).
How old is Poseidon 404 Limited?
Poseidon 404 Limited was incorporated on 15 October 2013, 12 years ago.
What is the penalty if Poseidon 404 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 Poseidon 404 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.