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Company profile · Electricians
Harrow Fire System Limited
Harrow Fire System Limited is a 6-year-old private limited company registered in Harrow, company number 12911574, one of 200 electrical contractors in Harrow. Its next accounts are due at Companies House on 30 June 2027, and the CT600 for the period to 30 September 2026 is due at HMRC on 30 September 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 30 September 2025, as filed at Companies House.
Harrow Fire System Limited over the years
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 unchanged on the year before, at £1.
- Net assets rose in 0 of 4 year-on-year comparisons on record.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 5 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Sep 2025 | £1 | £1 | 0 | ||
| 30 Sep 2024 | £1 | £1 | 0 | ||
| 30 Sep 2023 | £1 | £1 | 0 | ||
| 30 Sep 2022 | £1 | £1 | 0 | ||
| 30 Sep 2021 | £1 | £1 | 0 |
Where Harrow Fire System Limited is registered
The registered office is in Harrow (HA3), in the Harrow local authority area, London. Show HA3 7LA on a map.
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What happens if Harrow Fire System 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 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jul 2027 to 31 Jul 2027 | £150 |
| 1 to 3 months late | 1 Aug 2027 to 30 Sep 2027 | £375 |
| 3 to 6 months late | 1 Oct 2027 to 31 Dec 2027 | £750 |
| More than 6 months late | From 1 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 12911574
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 29 September 2020 (6 years ago)
- Registered office
- 15 Dryden Road, Harrow, HA3 7LA
- Nature of business
- Electrical installation (SIC 43210)
Security systems service activities (SIC 80200) - Year end
- 30 September (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 September 2025
- Last confirmation statement
- 28 September 2025
- Previous names
- Jnkzd143 Limited (until 22 Oct 2024)
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 Harrow
Other active electrical contractors registered in Harrow.
- Harrowbourne Electrical Contractors Ltd2013
- HDT Solutions Ltd2026
- Hewitson Heating & Utility Services Ltd2021
- Hillectrics Limited2014
- Hirani Electrical Ltd2024
- Hitbit Limited2013
- Ho Electrical Ltd2025
- Home Field Construction Limited2019
All electrical contractors in Harrow · All trades in Harrow · Electricians across the UK
Frequently asked questions
When are Harrow Fire System Limited's accounts due?
Harrow Fire System Limited's next accounts are due at Companies House by 30 June 2027 (in 261 days), covering the period to 30 September 2026.
When is Harrow Fire System Limited's CT600 due?
The CT600 for the period to 30 September 2026 is due at HMRC by 30 September 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 July 2027.
Is Harrow Fire System Limited still trading?
Harrow Fire System 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 Harrow Fire System Limited do?
Harrow Fire System Limited is registered under Electrical installation (SIC 43210); Security systems service activities (SIC 80200).
How old is Harrow Fire System Limited?
Harrow Fire System Limited was incorporated on 29 September 2020, 6 years ago.
What is the penalty if Harrow Fire System 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 Harrow Fire System 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.