- Companies
- Electricians
- Croydon
- Owl Alarm Systems Limited
Owl Alarm Systems Limited
- Company number
- 02047423
- Incorporated
- 18 Aug 198640 years trading
- Registered office
- 175 Sorrel Bank, Linton Glade, Croydon, Surrey, CR0 9LZ
- Nature of business
- Electrical installation
Owl Alarm Systems Limited is a 40-year-old private limited company registered in Croydon, company number 02047423, one of 120 electrical contractors in Croydon. Its next accounts are due at Companies House on 31 December 2027, and the CT600 for the period to 31 March 2027 is due at HMRC on 31 March 2028.
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 £11K on the year before, to -£10K.
- Net assets rose in 0 of 4 year-on-year comparisons on record.
- Current assets of £6,001 against £17K owed within a year: 0.4 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 5 years, 2022 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2026 | -£10K | £6,001 | £17K | 1 | |
| 31 Mar 2025 | £698 | £6,915 | £9,547 | 1 | |
| 31 Mar 2024 | £17K | £16K | £3,143 | 1 | |
| 31 Mar 2023 | £21K | £19K | £3,373 | 1 | |
| 31 Mar 2022 | £24K | £26K | £6,305 | 1 |
Where Owl Alarm Systems Limited is registered
The registered office is in Croydon (CR0), in the Croydon local authority area, London. Show CR0 9LZ on a map.
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What happens if Owl Alarm Systems 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 December 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2028 to 31 Jan 2028 | £150 |
| 1 to 3 months late | 1 Feb 2028 to 31 Mar 2028 | £375 |
| 3 to 6 months late | 1 Apr 2028 to 30 Jun 2028 | £750 |
| More than 6 months late | From 1 Jul 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 2029 | 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
- 02047423
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 18 August 1986 (40 years ago)
- Registered office
- 175 Sorrel Bank, Linton Glade, Croydon, Surrey, CR0 9LZ
- Nature of business
- Electrical installation (SIC 43210)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2026
- Last confirmation statement
- 14 November 2025
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 Croydon
Other active electrical contractors registered in Croydon.
- P Chatelier Electrical Limited2014
- Paint Rag & Roll Limited2009
- Paul R Elliston Electricial Services Limited2016
- Pawplumfix Ltd2022
- Prime Set Ltd2019
- PSC Electrical London Limited2016
- Purcell Electrical Limited2015
- Quays Quality Building Services Limited2017
All electrical contractors in Croydon · All trades in Croydon · Electricians across the UK
Frequently asked questions
When are Owl Alarm Systems Limited's accounts due?
Owl Alarm Systems Limited's next accounts are due at Companies House by 31 December 2027 (in 444 days), covering the period to 31 March 2027.
When is Owl Alarm Systems Limited's CT600 due?
The CT600 for the period to 31 March 2027 is due at HMRC by 31 March 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2028.
Is Owl Alarm Systems Limited still trading?
Owl Alarm Systems 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 Owl Alarm Systems Limited do?
Owl Alarm Systems Limited is registered under Electrical installation (SIC 43210).
How old is Owl Alarm Systems Limited?
Owl Alarm Systems Limited was incorporated on 18 August 1986, 40 years ago.
What is the penalty if Owl Alarm Systems 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 Owl Alarm Systems 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.