- Companies
- Builders
- Staines-upon-Thames
- Con Fire and Security Limited
Con Fire and Security Limited
- Company number
- 12835243
- Incorporated
- 25 Aug 20206 years trading
- Registered office
- 42 Gordon Close, Staines-upon-Thames, TW18 1AR
- Nature of business
- Construction of commercial buildings; Construction of domestic buildings; Other engineering activities
Con Fire and Security Limited is a 6-year-old private limited company registered in Staines-upon-Thames, company number 12835243, one of 106 building contractors in Staines-upon-Thames. Companies House shows its accounts as overdue: they were due on 31 May 2026.
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 £730 (-98.9%) on the year before, to £8.
- Net assets rose in 1 of 3 year-on-year comparisons on record.
- Current assets of £85K against £94K owed within a year: 0.9 times cover.
- 3 employees on average, down from 5 the year before.
- Balance sheets on record for 4 years, 2021 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Aug 2024 | £8 | £85K | £94K | 3 | |
| 31 Aug 2023 | £738 | £84K | £88K | 5 | |
| 31 Aug 2022 | £11K | £26K | £22K | 3 | |
| 31 Aug 2021 | £1 | £1 |
Where Con Fire and Security Limited is registered
The registered office is in Staines-upon-Thames (TW18), in the Spelthorne local authority area, South East. Show TW18 1AR on a map.
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- Querceto Property LtdProperty developers
- Deep Property Group LtdProperty developers
- Icm Power LtdMachinery repair and installation
- Staines Scooter LtdMotor traders
- JBS All-Trades LtdPlumbers and heating engineers
- Almisor Solar LtdBuilders
- Greenzone Cooling LtdPlumbers and heating engineers
What happens if Con Fire and Security Limited files late
If the accounts reach Companies House today, the late filing penalty is £750 (£1,500 if last year's accounts were also late). It rises at each step below.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jun 2026 to 30 Jun 2026 | £150 |
| 1 to 3 months late | 1 Jul 2026 to 31 Aug 2026 | £375 |
| 3 to 6 months late | 1 Sep 2026 to 30 Nov 2026 | £750 |
| More than 6 months late | From 1 Dec 2026 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2026 | £200 |
| 3 months late | 30 Nov 2026 | another £200 |
| 6 months late | 28 Feb 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 2027 | 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
- 12835243
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 25 August 2020 (6 years ago)
- Registered office
- 42 Gordon Close, Staines-upon-Thames, TW18 1AR
- Nature of business
- Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202)
Other engineering activities (SIC 71129) - Year end
- 31 August (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 August 2024
- Last confirmation statement
- 24 August 2025
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in Staines-upon-Thames
Other active building contractors registered in Staines-upon-Thames.
- Cuzztec Ltd2026
- Dawn to Dusk Builders Ltd2022
- Devshare Ltd2026
- DFD Construction Ltd2021
- DJF Lofts and Extensions Ltd2024
- Dutt Builders Ltd2021
- E.C.S.E Construction Ltd2022
- E.D Building & Construction Ltd2026
All building contractors in Staines-upon-Thames · All trades in Staines-upon-Thames · Builders across the UK
Frequently asked questions
When are Con Fire and Security Limited's accounts due?
Con Fire and Security Limited's accounts were due at Companies House on 31 May 2026 and the register shows them as overdue.
When is Con Fire and Security Limited's CT600 due?
The CT600 for the period to 31 August 2025 is due at HMRC by 31 August 2026, 12 months after the period end. The corporation tax itself is payable earlier, by 1 June 2026.
Is Con Fire and Security Limited still trading?
Con Fire and Security Limited is listed as active on the Companies House register (checked 12 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 Con Fire and Security Limited do?
Con Fire and Security Limited is registered under Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202); Other engineering activities (SIC 71129).
How old is Con Fire and Security Limited?
Con Fire and Security Limited was incorporated on 25 August 2020, 6 years ago.
What is the penalty if Con Fire and Security 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 Con Fire and Security Limited on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.