- Companies
- Electricians
- Tamworth
- Knox Fire & Security Limited
Knox Fire & Security Limited
- Company number
- 07835353
- Incorporated
- 4 Nov 201114 years trading
- Registered office
- Unit 1 & 2 B5K Business Park, Quartz Close, Tamworth, B77 4GR
- Nature of business
- Electrical installation; Fire service activities
Knox Fire & Security Limited is a 14-year-old private limited company registered in Tamworth, company number 07835353, one of 119 electrical contractors in Tamworth. Its next accounts are due at Companies House on 31 May 2027, and the CT600 for the period to 31 August 2026 is due at HMRC on 31 August 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 £1,161 (-0.2%) on the year before, to £761K.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- Current assets of £1.2M against £407K owed within a year: 2.8 times cover.
- 7 employees on average, up from 6 the year before.
- 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 | £761K | £702K | £1.2M | £407K | 7 |
| 31 Jan 2024 | £762K | £510K | £1.3M | £535K | 6 |
| 31 Jan 2023 | £983K | £790K | £1.6M | £538K | 6 |
| 31 Jan 2022 | £645K | £681K | £1.2M | £350K | 5 |
| 31 Jan 2021 | £322K | £785K | £1.4M | £850K | 4 |
| 31 Jan 2020 | £96K | £103K | £420K | £336K | 4 |
| 31 Jan 2019 | £78K | £62K | £459K | £394K | 3 |
| 31 Jan 2018 | £40K | £104K | £294K | £260K | 2 |
| 31 Jan 2017 | £17K | £284K | £496K | £321K | 2 |
| 31 Jan 2016 | £18K | £143K | £483K | £352K |
Where Knox Fire & Security Limited is registered
The registered office is in Tamworth (B77), in the Tamworth local authority area, West Midlands. Show B77 4GR on a map.
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What happens if Knox Fire & Security 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 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jun 2027 to 30 Jun 2027 | £150 |
| 1 to 3 months late | 1 Jul 2027 to 31 Aug 2027 | £375 |
| 3 to 6 months late | 1 Sep 2027 to 30 Nov 2027 | £750 |
| More than 6 months late | From 1 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2027 | £200 |
| 3 months late | 30 Nov 2027 | another £200 |
| 6 months late | 29 Feb 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 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
- 07835353
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 4 November 2011 (14 years ago)
- Registered office
- Unit 1 & 2 B5K Business Park, Quartz Close, Tamworth, B77 4GR
- Nature of business
- Electrical installation (SIC 43210)
Fire service activities (SIC 84250) - Year end
- 31 August (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 August 2025
- Last confirmation statement
- 4 November 2025
- Charges (mortgages)
- 2 outstanding of 2 registered
Filing notes for electrical contractors
Electrical contracting companies are often a director plus a van and tools. Most fall within the micro-entity rules, so the accounts filed at Companies House are short, and the CT600 carries the tax detail.
Similar companies in Tamworth
Other active electrical contractors registered in Tamworth.
- Kore Electrical Services Limited2023
- L Clarke's Electrical Ltd2025
- Lectaurus Electrical Ltd2023
- Live Sparks Media Ltd2024
- Mayburyelectrical Ltd2024
- Mere Green Electrical Limited2003
- MH Electrical Services Limited2001
- Midland Solar Ltd2020
All electrical contractors in Tamworth · All trades in Tamworth · Electricians across the UK
Frequently asked questions
When are Knox Fire & Security Limited's accounts due?
Knox Fire & Security Limited's next accounts are due at Companies House by 31 May 2027 (in 230 days), covering the period to 31 August 2026.
When is Knox Fire & Security Limited's CT600 due?
The CT600 for the period to 31 August 2026 is due at HMRC by 31 August 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 June 2027.
Is Knox Fire & Security Limited still trading?
Knox Fire & Security 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 Knox Fire & Security Limited do?
Knox Fire & Security Limited is registered under Electrical installation (SIC 43210); Fire service activities (SIC 84250).
How old is Knox Fire & Security Limited?
Knox Fire & Security Limited was incorporated on 4 November 2011, 14 years ago.
What is the penalty if Knox Fire & 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 Knox Fire & Security 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.