- Companies
- Installers
- Potters Bar
- Siv Fire Protection Ltd
Siv Fire Protection Ltd
- Company number
- 07139451
- Incorporated
- 28 Jan 201016 years trading
- Registered office
- 82A High Street, Potters Bar, Hertfordshire, EN6 5AB
- Nature of business
- Other construction installation
Siv Fire Protection Ltd is a 16-year-old private limited company registered in Potters Bar, company number 07139451, one of 17 installation companies (insulation, lifts, shutters and similar) in Potters Bar. Its next accounts are due at Companies House on 29 October 2026, and the CT600 for the period to 29 January 2026 is due at HMRC on 29 January 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 £182K (-52.2%) on the year before, to -£530K.
- Net assets rose in 2 of 9 year-on-year comparisons on record.
- Current assets of £539K against £1M owed within a year: 0.5 times cover.
- 13 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 Jan 2025 | -£530K | £350 | £539K | £1M | 13 |
| 31 Jan 2024 | -£348K | £2,400 | £466K | £762K | 13 |
| 31 Jan 2023 | -£293K | £2,400 | £521K | £762K | 13 |
| 31 Jan 2022 | £114K | £11K | £919K | £808K | 13 |
| 31 Jan 2021 | £20K | £21K | £471K | £363K | 13 |
| 31 Jan 2020 | £257K | £0 | £449K | £232K | 13 |
| 31 Jan 2019 | £370K | £142K | £520K | £202K | 14 |
| 31 Jan 2018 | £391K | £110K | £467K | £144K | 7 |
| 31 Jan 2017 | £505K | £354K | £673K | £259K | |
| 31 Jan 2016 | £396K | £95K | £686K | £330K |
Where Siv Fire Protection Ltd is registered
The registered office is in Potters Bar (EN6), in the Hertsmere local authority area, East of England. Show EN6 5AB on a map.
Other trade companies in EN6
- Hertfordshire Roofing and Guttering Repairs LtdRoofers
- Vata RC Frames LtdSpecialist contractors
- Avanti Airtech LimitedPlumbers and heating engineers
- Azmaj Group LtdFinishing trades
- Burbridge Roofing and Build LtdBuilders
- Roman Way Holdings LtdProperty developers
- Westshire Property Services LimitedFinishing trades
- Oska Auto LtdMechanics and garages
Also registered at this address
1 other company uses the same registered office as Siv Fire Protection Ltd.
- Pro Enviro Services LimitedCleaning companies
What happens if Siv Fire Protection 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 29 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 30 Oct 2026 to 29 Nov 2026 | £150 |
| 1 to 3 months late | 30 Nov 2026 to 29 Jan 2027 | £375 |
| 3 to 6 months late | 30 Jan 2027 to 29 Apr 2027 | £750 |
| More than 6 months late | From 30 Apr 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 30 Jan 2027 | £200 |
| 3 months late | 29 Apr 2027 | another £200 |
| 6 months late | 29 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 29 Jan 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
- 07139451
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 28 January 2010 (16 years ago)
- Registered office
- 82A High Street, Potters Bar, Hertfordshire, EN6 5AB
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 29 January (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 January 2025
- Last confirmation statement
- 28 January 2026
- Charges (mortgages)
- 1 outstanding of 1 registered
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 Potters Bar
Other active installation companies (insulation, lifts, shutters and similar) registered in Potters Bar.
- The London Loft Family Ltd2023
- Unique Interiors Ltd1997
- Vata Groundworks Ltd2021
- Vsa Scaffolding Ltd2020
- A1 Renovations Ltd2026
- Abbey Partnership Limited2013
- Cami Builders Ltd2025
- Charles Winter Interiors Limited2017
All installation companies (insulation, lifts, shutters and similar) in Potters Bar · All trades in Potters Bar · Installers across the UK
Frequently asked questions
When are Siv Fire Protection Ltd's accounts due?
Siv Fire Protection Ltd's next accounts are due at Companies House by 29 October 2026 (in 16 days), covering the period to 29 January 2026.
When is Siv Fire Protection Ltd's CT600 due?
The CT600 for the period to 29 January 2026 is due at HMRC by 29 January 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 30 October 2026.
Is Siv Fire Protection Ltd still trading?
Siv Fire Protection 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 Siv Fire Protection Ltd do?
Siv Fire Protection Ltd is registered under Other construction installation (SIC 43290).
How old is Siv Fire Protection Ltd?
Siv Fire Protection Ltd was incorporated on 28 January 2010, 16 years ago.
What is the penalty if Siv Fire Protection 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 Siv Fire Protection 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.